Iron Foundry
- Episódios
- 73
- Publicação
- mensal
- Último episódio
- 11 nov 2026
Sobre o podcast
Iron Foundry by Terra API features conversations with founders, investors and athletes building the future of health, fitness and technology. Hosted by Kyriakos Eleftheriou, founder and CEO of Terra API. Guests include Vinod Khosla, Bryan Johnson, Lance Armstrong and former Y Combinator president Geoff Ralston. Explore AI, healthcare, human performance and company building. Full episodes, transcripts and key takeaways: https://tryterra.co/podcast
Episódios 73
Noom CEO: Geoff Cook
Geoff Cook, CEO of Noom, started microdosing GLP-1 to put himself in the user's shoes. Noom's combined behavior-change-plus-medication GLP-1 programs are now 70% of revenue.He joins Kyriakos Eleftheriou, CEO of …
Notas do episódio
Geoff Cook, CEO of Noom, started microdosing GLP-1 to put himself in the user's shoes. Noom's combined behavior-change-plus-medication GLP-1 programs are now 70% of revenue.
He joins Kyriakos Eleftheriou, CEO of Terra API, to talk about the $500 million Meet Group exit, why most people regain the weight in 18 months, why he wouldn't be surprised if Oura and Whoop start prescribing, why a closed loop is hard for the frontier labs to copy, and a peptide market he'd call a multi-billion-dollar black market.
0:00 I Started Microdosing GLP-1
1:39 The $500M Exit — Then Breakfast Made Him CEO
4:17 Why He Ignores Every Banker-Led Deal
6:15 The Only App Where More Screen Time Makes You Healthier
8:52 70% of Noom's Revenue Now Comes From GLP-1 Programs
11:34 Most People Regain All the Weight in 18 Months
15:57 Noom's Next Target After Weight Loss
20:08 I Wouldn't Be Surprised If Oura and Whoop Start Prescribing
22:58 AI Will Know Things About Your Body No Doctor Could
25:06 Why the Frontier Labs Can't Copy This
27:35 Every Noom Coach Now Has an AI Ghostwriter
29:04 You Only Get Paid If the Biomarkers Move
36:10 The One Peptide Noom Sells Besides GLP-1s
38:20 Peptides Are a Multi-Billion-Dollar Black Market
44:14 You're About to Enter a Golden Age of HealthLotus AI CEO: KJ Dhaliwal
KJ Dhaliwal raised $41M to build Lotus, an AI doctor backed by Kleiner Perkins and CRV.He joins Kyriakos Eleftheriou, CEO of Terra API, to discuss why San Francisco still wins,” why Lotus doesn’t bill …
Notas do episódio
KJ Dhaliwal raised $41M to build Lotus, an AI doctor backed by Kleiner Perkins and CRV.
He joins Kyriakos Eleftheriou, CEO of Terra API, to discuss why San Francisco still wins,” why Lotus doesn’t bill insurance, and what doctors will actually do in five years.
His prediction: doctors become the backup, and not using AI could eventually become medical malpractice.
00:00 Pizza, Sneakers and Options Trading
04:33 Why San Francisco Still Wins
15:14 Building Dil Mil Where Tinder Fell Short
22:25 Raising $41M for Lotus
27:17 No Insurance. Straight to the Patient.
32:36 “Healthcare Investors Are the Worst”
38:19 Could Avoiding AI Become Malpractice?
41:20 How Often Doctors Reject the AI
46:09 Medical Benchmarks Miss the Real World
52:15 What If the Doctor Is Wrong?
57:02 Doctors Become the Backup
1:00:10 Why OpenAI Won’t Run a Medical Practice
Vinod Khosla: “It’s Over for Human Doctors”
Vinod Khosla’s conclusion: “It’s over for human doctors. AI’s just going to be better.”Full episode, transcript and key takeaways: https://tryterra.co/podcast/Vinod-Khosla-Its-Over-for-Human-DoctorsVinod Khosla …
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Vinod Khosla’s conclusion: “It’s over for human doctors. AI’s just going to be better.”
Full episode, transcript and key takeaways: https://tryterra.co/podcast/Vinod-Khosla-Its-Over-for-Human-Doctors
Vinod Khosla joins Kyriakos Eleftheriou in front of hundreds of YC AI Startup School founders to explain what the future of healthcare actually looks like.
0:00 Introduction
1:51 When “Do What Users Want” Is Wrong
2:26 Nobody Asked for AI or Fusion
3:51 You Don’t Need a Noble Reason to Start
4:58 Workers, Not Tools for Workers
5:43 Humans Get in the Way of AI
7:52 The Most Important Founder Decision: Who to Ignore
8:15 70% of Investors Add Negative Value
9:40 Most VCs Haven’t Earned the Right to Advise
10:01 Great Founder References Can Be a Bad Sign
10:45 Four Years Destroyed by Polite Investors
12:07 Sam Altman’s Hardest Problem
13:27 Disagreement Is Always Good
15:39 Follow the Talent, Not Today’s Failures
16:55 When Every Telecom Company Bet Against TCP/IP
19:33 “My Willingness to Fail Allows Me to Succeed”
20:57 Judge the Learning Curve, Not the Founder Today
21:13 European Investors Turn Great Ideas Into Decent Ones
22:57 No Doctor Can Keep Up With Medicine
23:41 Drug Interactions Kill More Than Breast Cancer
23:54 Why Vinod Diagnoses Himself With ChatGPT
25:12 Taking a Drug Approved Only for Women
26:44 Three Surgeons. Three Answers. One MRI.
28:28 It’s Over for Human Doctors
30:27 Doctors 73%. AI 88%. Doctors + AI 76%.
31:52 AI Mental Health Diagnosis: 93%
32:52 AI Rated as a Top-10% Therapist
33:19 A Frontier Model Is Not a Medical System
34:32 Human Error Is More Acceptable Than AI Error
36:08 $1T of Healthcare Expertise Should Be Free
38:20 Doctors Will Not Use AI If It Costs Them Fees
38:54 Why the AMA Opposes AI Doctors
39:13 Billing Decides Which Medical Technology Wins
40:34 Administrative AI Is the Smaller Opportunity
41:39 Going Founder Mode on Cancer
42:25 N=1 Medicine Can Route Around Drug Trials
43:06 Founders Go Around Obstacles. Big Companies Don’t.
44:07 Removing Human Drivers Could Save 30,000 Lives
45:38 Radiologists Without AI Are Killing People
46:11 MRI Scanners Should Output Diagnoses, Not Images
48:02 Epic Still Runs on a 1960s Language
49:34 How AI Agents Can Route Around Epic
51:02 Impact Over IRR. OpenAI Made No Sense.
51:48 Fusion Will Not Happen Until Someone Builds It
52:34 Entrepreneurs Make Forecasts Irrelevant
54:17 Light-Rail Capacity Inside a Bicycle Lane
Hims & Hers CTO: Mo Elshenawy
Mo Elshenawy helped put driverless cars on San Francisco streets as President and CTO of Cruise.Full episode and show notes: https://tryterra.co/podcast/Hims-Hers-CTO-Mo-ElshenawyNow CTO of Hims & Hers, he …
Notas do episódio
Mo Elshenawy helped put driverless cars on San Francisco streets as President and CTO of Cruise.
Full episode and show notes: https://tryterra.co/podcast/Hims-Hers-CTO-Mo-Elshenawy
Now CTO of Hims & Hers, he joins Kyriakos to explain why rebuilding healthcare is harder.
They discuss closed-loop healthcare, clinical guidelines as code, when AI should remain silent, and whether AI will replace doctors.
Mo’s argument: models commoditize. Data and workflow compound.
At 25:13, Mo introduces Hims & Hers’ new AI weight loss companion.
CHAPTERS
(00:00) The Chessboard That Started It All
(02:22) AI Changed the Cost of Building
(04:17) Healthcare Is Harder Than Self-Driving
(06:13) Twice the Cost. 3.7 Fewer Years.
(09:17) Conviction Before Driverless Worked
(13:47) The Lunch That Changed His Career
(15:25) Healthcare Is Actually Sick Care
(18:03) Write Your Own Onboarding Plan
(19:43) AI Without a Platform Is Demoware
(23:06) Why OpenAI Can’t Close the Loop
(25:13) Hims’ AI Weight Loss Announcement
(28:42) Silence Is a Feature
(31:53) Clinical Guidelines as Code
(33:32) Most AI Benchmarks Are Theater
(36:12) Models Commoditize. Workflow Compounds.
(38:46) AI Will Not Replace Doctors
(44:37) AI Makes Bad Engineers Worse
(48:15) Healthcare Is Still Blockbuster
(52:00) Is Hims Getting Into Peptides?
(54:06) Concierge Care in Everyone’s Pocket
(58:46) AI Destroys the Excuse Not to Build
George Hadjivarnava: Founding Foody, and building AI at Terra
George Hadjivarnava co-founded Foody as CTO with no VC money, made it profitable in under 2 years, and sold it to Delivery Hero in the biggest tech acquisition in Cyprus.Full episode and show notes …
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George Hadjivarnava co-founded Foody as CTO with no VC money, made it profitable in under 2 years, and sold it to Delivery Hero in the biggest tech acquisition in Cyprus.
Full episode and show notes: https://tryterra.co/podcast/George-Hadjivarnava-Founding-Foody-and-building-AI-at-Terra
Scaling through COVID from restaurant menus to full supermarkets, total downtime: 45 minutes.
Now he leads engineering strategy at Terra and he believes the next infrastructure layer won't be built for developers at all.
- Why in two years 90% of Terra's customers will be agents instead of developers
- Why MCPs didn't invent anything new, and the missing layer that transfers intent instead of commands
- Why nothing performs well past 100k tokens despite 1M context windows
- The decision log: AI's most underrated asset inside a company
- Bootstrapping Foody from phone orders and cash payments to a national exit
- Compressing hiring from 3 weeks to 1 day with 30,000 applications a year
- The 24/7 AI health system: even a billionaire's team of doctors goes to sleep
(0:00) Intro
(1:30) Startup ecosystem in Cyprus: more incubators than startups
(7:20) Why ecosystems compound
(23:00) Flunking Imperial and building websites to pay rent
(29:00) Foody's first version: phone orders, cash only
(39:35) The Delivery Hero acquisition and COVID scaling
(43:05) 45 minutes of total downtime
(44:45) You can one-shot an app. You can't one-shot 100M users
(50:25) Joining Terra
(56:40) The missing agent layer: intent, not commands
(1:02:50) The 24/7 AI health system
(1:09:35) The 90% agents prediction
(1:11:05) Hiring compressed from 3 weeks to 1 day
(1:15:35) The decision log: building a company brain
(1:19:10) Why 1M context windows are marketing
(1:26:35) Three changes to become a real technology hubFormer Y Combinator President | Geoff Ralston
Geoff Ralston built Rocket Mail before Yahoo Mail existed, built Lala before Spotify worked in America, sat in Steve Jobs' living room to get an acquisition approved, and ran Y Combinator as President. Now …
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Geoff Ralston built Rocket Mail before Yahoo Mail existed, built Lala before Spotify worked in America, sat in Steve Jobs' living room to get an acquisition approved, and ran Y Combinator as President. Now he says the most important thing he's ever worked on is making sure AI doesn't kill us.
Full episode and show notes: https://tryterra.co/podcast/Early-to-Every-Wave-Former-Y-Combinator-President-Geoff-Ralston
In this episode with Kyriakos Eleftheriou, Geoff speaks about YC, SAIF, the Yahoo acquisition, and the top learnings after decades in silicon valley
00:00 Introduction
03:45 The $70K bet that built Sand Hill Road
06:07 Early to every wave
06:59 "The most important thing I've ever worked on"
08:18 Timing is luck. Here's how to get lucky anyway
10:46 Quitting HP the day he saw the Mosaic browser
15:39 Paul Graham's "packets of cash" acquisition rule
19:35 The Yahoo revolt that almost killed the deal
33:45 Zuck killed Facebook Music in one sentence
39:05 Why Steve Jobs offered him a job — and why he said no
45:40 Running Y Combinator
50:37 Steve Jobs' real superpower
54:06 Why AI is more dangerous than people think
01:01:15 Peter Thiel is wrong about competition
01:03:31 Marc Andreessen is wrong about introspection
--
Full podcast and writeup → Geoff Ralston on early YC, AI risk, and why Thiel is wrong about competition
Head of Samsung Next: David Lee - Live in LA
By the age of 25, David Lee survived stage 4 lymphoma. Not only did he not let it stop him, he worked early in Google, became a partner at SV Angel during the Airbnb / Twitter / Dropbox / Snapchat era, and now …
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By the age of 25, David Lee survived stage 4 lymphoma. Not only did he not let it stop him, he worked early in Google, became a partner at SV Angel during the Airbnb / Twitter / Dropbox / Snapchat era, and now leads Samsung Next. In the latest discussion with Kyriakos Eleftheriou in Los Angeles, they discussed:
Full episode and show notes: https://tryterra.co/podcast/Head-of-Samsung-Next-David-Lee-Live-in-LA
CHAPTERS
(00:00) Introduction
(02:30) Why digital health still hasn't had its "reusable rocket"
(07:00) "Law school is coding for your mind"
(08:30) How Elon, Dorsey and Belichick boil any problem down to 3 things
(11:00) Telling Yo-Yo Ma from a college cellist — how to spot real talent
(14:00) The NFL gets the #1 pick wrong 50% of the time — so how do you pick founders?
(16:30) Most pro athletes are scared in big games
(19:30) Without a killer product, you have no strategy
(22:00) Vanity beats health — why no one wears the clunky device
(29:00) Your kids will never do what you tell them — they copy what you do
(32:30) Jensen Huang, Saturdays, and why the top person sets everything
(37:30) The "red zone of intelligence" AI will never touch
(38:30) Why the great fitness instructor gets paid more in the AI era
(40:30) Why VC is the wrong financing model for the next decade
(41:30) Mike Ovitz and CAA — the playbook for winning in AI
Full podcast and writeup → David Lee on Samsung Next, picking founders, and building inside a giant
Chief Growth Officer of HYROX: Douglas Gremmen
42,000 tickets for one New York event. 15,000 gym affiliates. $0 spent on influencers. HYROX CGO Douglas Gremmen joins Kyriakos, CEO of Terra API , at the Connected Health Summit in Stanford to talk through …
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42,000 tickets for one New York event. 15,000 gym affiliates. $0 spent on influencers. HYROX CGO Douglas Gremmen joins Kyriakos, CEO of Terra API , at the Connected Health Summit in Stanford to talk through what actually drove that — and what didn't work.
Full episode and show notes: https://tryterra.co/podcast/hyrox-cgo-douglas-gremmen
The US was their first market outside Germany and their hardest. Three years of losses. A single Lance Armstrong weekend changed the momentum — not because they paid him, but because he just turned up. The gym affiliate program started as inbounds with no structure; it's now the foundation of a bet to reach 100 million people. The CrossFit comparison gets a real answer, not a PR one.
But the most interesting parts are the early decisions: rejecting the $2 race t-shirt, the photo package that created the organic flywheel, and a simple principle — invest in the event experience and don't run paid marketing.
00:00 Welcome to Stanford
01:46 Running HYROX at a Conference & the "Bubble" Moment
03:48 The Sweaty Barrier to Participation Problem
05:44 Douglas's Backstory: Sports Marketing & How HYROX Was Born
08:59 From First Event in Hamburg to Leading Global Expansion
10:29 Early Growth: The Van, T-Shirts, Red Bull & the Photo Flywheel
12:36 Global Expansion: Japan, Brazil, India & Getting on the Calendar
14:56 Why the US Was the Hardest Market to Crack
17:28 Losing Money in America — Keeping Belief When the P&L Doesn't Work
19:09 The Lance Armstrong New York Bet: $1M & 30M Impressions
20:27 Influencers at HYROX: Always Organic, Never Paid
21:52 Scaling to 42,000 Tickets: 9 Days of Racing Bigger Than NYC Marathon
23:45 Building Operations: Christian Tutske's Eye for Detail
25:39 Why Athletes Keep Coming Back: Community & Identity
28:00 HYROX 365: From Events Company to 15,000-Gym Affiliate Business
30:54 Accelerating Gym Growth: Big Box Operators & Chicken-and-Egg Dynamics
34:27 HYROX as a Gym Retention Play: Coach Education & Member Stickiness
36:49 Fragmented Gym Tech & the Data Opportunity
38:23 HYROX vs. CrossFit: Honest Comparison & 1,500 Shared Affiliates
43:10 The Pickleball Analogy: Low Barrier + Social + Price = Rocket Ship
46:49 The Path to 100 Million People: Events, Gyms & Knowing Who Trains
49:50 HYROX x Puma: Building a Fashion Brand & the First Dedicated Shoe
54:14 Contrarian Take on the Future of Fitness: Back to Fundamentals
56:35 Physical Events vs. Social Media: Why Credibility Is Harder to Fake
59:11 Post-COVID Perfect Storm & Tickets Selling Out as the New Challenge
01:01:09 Where Will HYROX Be in 5 Years? Formula One, Olympics 2032 & 100M People
Full podcast and writeup → Douglas Gremmen on selling 42,000 tickets in a day and scaling HYROX to 15,000 gyms
CTO + Director of AI at Flo Health: Roman Bugaev + Vladislav Nedosekin
In the latest episode, Kyriakos Eleftheriou sat down with Roman Bugaev , CTO of Flo and Vlad Nedosekin Director of AI Platform, at the Terra API HQ in London, to discuss how they built the top health AI …
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In the latest episode, Kyriakos Eleftheriou sat down with Roman Bugaev , CTO of Flo and Vlad Nedosekin Director of AI Platform, at the Terra API HQ in London, to discuss how they built the top health AI platform globally for women's health.
Full episode and show notes: https://tryterra.co/podcast/cto-director-of-ai-at-flo-health-roman-bugaev-vladislav-nedosekin
CHAPTERS
(0:00) Intro — Flo Health: From 20 People to 80 Million Users
(1:02) How Flo became the fastest-growing health company in the world
(1:48) Roman's early days: 20 employees, no revenue, product-market fit
(3:15) How did you know the product was a hit?
(3:25) The underserved women's health market — everyone was building Uber alternatives
(4:31) First ML: neural networks for cycle and symptom prediction
(5:31) Product evolution — from symptom tracking to AI-powered insights
(5:38) Building chatbots inspired by how doctors ask questions
(9:18) A/B testing at scale — Flo's custom experimentation platform
(11:43) Engineering structure: autonomous two-pizza teams
(13:51) Team mistakes — why separate mobile and backend teams failed
(15:29) Scaling from 4 servers to 600 services and petabytes of data
(17:53) "Whenever it's possible, we are NOT doing AI"
(23:15) Why temperature data is critical for ovulation prediction
(25:09) Why Flo is the most accurate period tracker — data diversity advantage
(28:04) Competition: "We don't really have real competitors"
(29:00) AI content creation — generating personalized medical articles
(31:01) Hallucinations vs. conflicting medical sources
(32:34) The three-person blind test: when AI disagrees with humans
(35:10) AI is more consistent than clinicians — but biased against women
(36:52) Fine-tuning open-source models on synthetic women's health data
(38:25) User profile: the foundation of Flo's personalization
(41:19) The digital avatar — your AI health twin that notices what you don't
(43:09) AI router: like a GP triage system for language models
(46:04) Router also controls tone of voice and remembers past conversations
(47:29) "Evaluation, evaluation, evaluation" — how Flo picks models
(48:40) Model stability: why proprietary model updates are dangerous for medical AI
(51:01) Anonymous mode: privacy that enables AI instead of blocking it
(53:49) On-device ML for the most sensitive health data
(56:03) Cloudflare outage — "when everyone is down, you're allowed to be down"
(56:58) Fine-tuning Llama 7B on Databricks — 10,000+ GPU hours per run
(58:07) Training vs. inference cost breakdown
(59:45) 100,000-token prompts: the hidden cost of medical AI
(1:01:05) Build vs. buy: "Build your competitive advantage, buy everything else"
(1:04:47) Value creation vs. value capture teams
(1:07:04) The future: AI that knows you better than you know yourself
(1:09:00) Time series models: the future of health prediction from wearables
(1:10:38) Q&A
Full podcast and writeup → Roman Bugaev and Vladislav Nedosekin on scaling Flo Health to 80M users and shipping AI in femtech
Glovo and Yellow.vc co-founder, Sacha Michaud
In this episode, Kyriakos Eleftheriou, Terra API CEO sits down with Sacha Michaud, co-founder of Glovo, one of the biggest tech successes in the European tech ecosystem,and Yellow.VC, an early-stage fundFull …
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In this episode, Kyriakos Eleftheriou, Terra API CEO sits down with Sacha Michaud, co-founder of Glovo, one of the biggest tech successes in the European tech ecosystem,and Yellow.VC, an early-stage fund
Full episode and show notes: https://tryterra.co/podcast/glovo-and-yellow-vc-co-founder-sacha-michaud
Sacha shares the journey of building the on-demand delivery service from its inception in Barcelona to its expansion across 25 countries and a $2.3 billion acquisition.
He discusses the initial challenges of fundraising, competing against larger companies, and the importance of passion and culture in building a successful team. Michaud reflects on the early days of Glovo, where they experimented with a simple app that allowed users to order anything from the city, leading to unexpected viral growth despite initial losses. He emphasizes the significance of adapting to market needs and the evolution of Glovo's business model over the years, particularly during the COVID-19 pandemic, which accelerated the demand for grocery delivery.
Chapters
00:00 Introduction
02:29 The Birth of Glovo: From Idea to Launch
05:59 Viral Growth and Initial Operations
12:06 Realizing the Potential of Glovo
21:39 Expanding into New Markets
38:55 Navigating Competition and Strategic Decisions
50:39 The $2.3B Acquisition
55:00 Yellow, and investing in new startups
01:04:11 AI and Future Trends in Delivery
Full podcast and writeup → Sacha Michaud on building Glovo into a $2B delivery giant and now backing founders at Yellow.vc
Thriva CTO: Tom Livesey
In this conversation, Kyriakos Eleftheriou is joined by Tom Livesey, CTO and co-founder of Thriva, who discusses the journey of his health tech company, which has transformed the way individuals monitor their …
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In this conversation, Kyriakos Eleftheriou is joined by Tom Livesey, CTO and co-founder of Thriva, who discusses the journey of his health tech company, which has transformed the way individuals monitor their health through innovative blood testing solutions.
Full episode and show notes: https://tryterra.co/podcast/thriva-cto-tom-livesey
He shares insights on the challenges faced during the startup phase, the impact of COVID-19 on their operations, and the importance of consumer awareness in health diagnostics. Tom emphasizes the need for personalization in health insights and the role of technology in improving user experience.
He also touches on the fundraising journey, navigating the NHS landscape, and the future of health tech.
Chapters
00:00 Intro
02:44 Navigating the Challenges of Health Testing
05:30 The Evolution of Thriva's Product Offering
08:33 Fundraising Journey: From Startup to Success
11:15 COVID-19: A Catalyst for Change
14:11 The Future of Health Diagnostics
16:53 Building a Sustainable Business Model
19:29 Customer Acquisition and Marketing Strategies
22:27 The Role of Technology in Health Monitoring
24:56 The Impact of Consumer Awareness on Health
27:32 The Next Decade: Predictions for Health Tech
30:35 Addressing Consumer Anxiety in Health Testing
33:15 The Importance of Personalization in Health Insights
36:06 Navigating the NHS Landscape
39:00 The Future of Home Testing and Diagnostics
Full podcast and writeup → Tom Livesey on going from a shed behind a hackle tree to 4M blood tests and powering the NHSHuma CEO: Dan Vahdat
The first Iranian entrepreneur to build a company worth over $1B in Europe, Dan Vahdat, founder of Huma, is joining Kyriakos Eleftheriou, founder of Terra APIFull episode and show notes: TerraThey discuss:00:00 …
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The first Iranian entrepreneur to build a company worth over $1B in Europe, Dan Vahdat, founder of Huma, is joining Kyriakos Eleftheriou, founder of Terra API
Full episode and show notes: Terra
They discuss:
00:00 - Intro
02:10 - Communicating with @EmmanuelMacron and @kmitsotakis
08:55 - Why are Greece and Persia not empires today
13:40 - How the best people look like
18:30 - Short-term vs long-term thinking
24:27 - Dropping out of PhD
26:57 - The first months of Huma
32:00 - Early days
32:27 - 'I never had the ego of being turned down'
34:00 - First customers
37:21 - How to price expensive contracts
48:30 - Regulation as a moat
59:10 - Raising $300m from partners instead of VC
1:02:58 - AI
1:06:00 - Storytelling advice
1:09:55 - Running
1:14:32 - Cyrus, Darius, and Achaemenid inspirations
1:19:23 - The future
Virgin Active CTO: David Turner
David Turner is the Group CTO of Virgin Active, a global health brand with more than 230 fitness clubs across 8 countries. He previously led NHS tech during Covid.Full episode and show notes …
Notas do episódio
David Turner is the Group CTO of Virgin Active, a global health brand with more than 230 fitness clubs across 8 countries. He previously led NHS tech during Covid.
Full episode and show notes: https://tryterra.co/podcast/virgin-active-cto-david-turner
The host: Kyriakos
More about Virgin Active00:00 - Intro01:26 - UK Tech05:33 - F1 telemetry vs fitness data07:33 - Betting + health data09:30 - Getting into software engineering13:51 - Inside NHS tech: joining mid-Covid chaos14:00 - Leading the NHS Covid digital response, 24/720:56 - Building national-scale testing tech24:49 - The real data engine behind the Covid travel pass26:00 - Virgin Active after NHS30:40 - Inside Virgin clubs tech33:40 - 360° member view41:40 - Rewards45:19 - Why true gym innovation came from outsiders54:40 - Advice to young engineers: fail fast, fail often58:17 - The future of health: your constant digital twin
Nucleus Genomics Founder: Kian Sadeghi - Live
The founder of Nucleus, Kian Sadeghi, joined Kyriakos Eleftheriou, in the second health day in San Francisco, and shared his learnings in front of a 300-person audience before the Y Combinator AI event.Full …
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The founder of Nucleus, Kian Sadeghi, joined Kyriakos Eleftheriou, in the second health day in San Francisco, and shared his learnings in front of a 300-person audience before the Y Combinator AI event.
Full episode and show notes: https://tryterra.co/podcast/nucleus-genomics-founder-kian-sadeghi
00:00 Intro
02:01 The Jake Paul vs. Mike Tyson fight sponsorship story.
05:01 "Fundraising is an art."
08:01 Competing with Mr. Beast and the importance of storytelling.
11:01 The evolution and impact of genetic testing.
14:01 Future of genetics and embryo selection.
17:01 AI in genetics.
20:01 Narrative in startup success.
23:01 Regulatory challenges
26:01 Personal journey and insights on building a company.
29:01 Genetic testing market
32:01 The role of computational biology in genetics.
35:01 The impact of whole genome sequencing on healthcare.
38:01 The future of genetic engineering and its societal implications.
41:01 The intersection of AI and genetics.
44:01 The importance of storytelling in the tech industry.
50:01 Future vision.
53:01 Q&A
Strava cofounder: Mark Gainey Live in San Francisco
After the Y Combinator AI event, Kyriakos Eleftheriou sat down with Mark Gainey co-founder of Strava, who shared his entrepreneurial journey, discussing the evolution of Strava from a startup to a $2.2 billion …
Notas do episódio
After the Y Combinator AI event, Kyriakos Eleftheriou sat down with Mark Gainey co-founder of Strava, who shared his entrepreneurial journey, discussing the evolution of Strava from a startup to a $2.2 billion fitness platform.
Full episode and show notes: https://tryterra.co/podcast/strava-cofounder-mark-gainey
Chapters
00:00 Intro
04:15 How technology changed
11:35 Should you be niche with AI
13:20 Building a Community
17:00 Dealing with big companies early on
20:53 User Feedback
23:00 Elimination process
25:10 Fundraising
28:43 AI
30:50 Adding more sports
36:18 The Future of Fitness
42:20 Storytelling
46:00 Q&A
Full podcast and writeup → Mark Gainey on starting Strava in a Boston basement, growing 99% organically, and why focusing on engagement beat chasing growth
Founder of Remote: Marcelo Lebre
How do you build a $3B company from Portugal?Full episode and show notes: https://tryterra.co/podcast/founder-of-remote-marcelo-lebreIn this episode, Marcelo Lebre (Co-founder of Remote), in a discussion with …
Notas do episódio
How do you build a $3B company from Portugal?
Full episode and show notes: https://tryterra.co/podcast/founder-of-remote-marcelo-lebre
In this episode, Marcelo Lebre (Co-founder of Remote), in a discussion with Kyriakos , shares how he went to building one of Europe’s top startups and why health, culture, and ruthless focus were key to scaling Remote globally.
We talk fitness, healthcare, European bureaucracy, and the mindset behind building a generational company.
Follow Marcelo → https://x.com/marcelo_lebre
Follow Kyriakos → https://x.com/kyriakosel
Chapters:
00:00 Intro
03:08 Training for Longevity
05:11 Nutrition and Wearables
08:14 What Doctors Miss
11:06 DIY Health and Data
14:10 Health Isn’t Just Avoiding Sickness
17:20 The Quote That Hit Hard
18:53 Building a Unicorn in Portugal
23:35 Why European Startups Die
27:12 Bureaucracy and Politics
32:03 What Governments Must Fix
35:50 Remote Still Feels Like a Startup
38:05 Europe’s Investment Problem
40:11 Remote Was Built Out of Frustration
44:03 Building a Global HR Platform
49:06 The Backbone of Global Hiring
52:04 No Ego No Politics
55:15 Not a Family A Team
57:52 How to Attract Top Talent
59:39 His 100-Year Vision
Sequoia Partner: George Robson
In the latest conversation at Imperial College London, Kyriakos is joined by George Robson, Partner at Sequoia.Full episode and show notes: https://tryterra.co/podcast/sequoia-partner-george-robsonGeorge went …
Notas do episódio
In the latest conversation at Imperial College London, Kyriakos is joined by George Robson, Partner at Sequoia.
Full episode and show notes: https://tryterra.co/podcast/sequoia-partner-george-robson
George went from leading global products at Revolut to joining Sequoia Capital - one of the most selective VC firms in the world.
At Revolut, he helped scale the team from a few hundred to thousands and launched products used by millions. Now at Sequoia, he backs Europe’s most ambitious founders.
In this episode, George shares:
- What made Revolut’s culture so intense and effective
- How Sequoia actually decides who to fund
- The founder red flag they won’t tolerate
- Why “talent density” beats speed in the early days
Whether you’re raising your first round, building a team, or just curious how the top VCs think this episode is packed with real insight from both sides of the table.
Follow George Robson on X
Follow Kyriakos Eleftheriou on X
TIMESTAMPS:
00:00 – Intro: From Revolut to Sequoia
03:15 – What made Revolut’s culture brutally effective
06:40 – Nik Storonsky’s “gym” metaphor and hiring filter
10:30 – The pod structure that unlocked speed and ownership
13:50 – Why Revolut grew like a Darwinian startup lab
17:10 – Inside Sequoia: culture, filters, and pace
21:45 – What founders often misunderstand about VC
24:30 – 50/50 founder equity splits: why it’s a red flag
28:00 – How Sequoia filters for world-class founders
31:00 – The 4 traits George looks for before investing
35:20 – Working with founders after the check lands
38:50 – Europe vs US: what’s still misunderstood
43:00 – How to pitch Sequoia the right way
46:30 – What great founders don’t do in a pitch
50:15 – Why storytelling and obsession matter
53:45 – What George would do differently as a founder
56:00 – Lightning round: hot takes on VC, speed, AI
59:10 – Closing thoughts: how to build for the long game
Founder of Flo Health: Dmitry Gurski
In the latest episode, Kyriakos is joined by Dmitry Gurski , the CEO of Flo Health, the fastest growing health startup in the world, for 2024, in their conversation at Imperial College LondonFull episode and …
Notas do episódio
In the latest episode, Kyriakos is joined by Dmitry Gurski , the CEO of Flo Health, the fastest growing health startup in the world, for 2024, in their conversation at Imperial College London
Full episode and show notes: https://tryterra.co/podcast/founder-of-flo-health-dmitry-gurski
Timestamps:
00:00 - Intro
02:10 - Early Failures & $60M Mistake
05:45 - Smart Founders Fail
08:20 - Launching Flo
11:10 - What Great Products Have in Common
13:30 - Beating Max Levchin & a16z
16:00 - Winning against Apple
20:30 - Fundraising
23:10 - 300 Experiments
26:00 - What Almost Killed Flo
28:40 - From $1B to $10B Valuation
30:00 - AI is too slow
33:30 - Fast Decisions > Smart Decisions
36:28 Q&A
Ethan Kurzweil: Managing Partner at Chemistry
Kyriakos is joined by Ethan Kurzweil, a founding partner at Chemistry and former managing partner at Bessemer Venture Partners.Full episode and show notes …
Notas do episódio
Kyriakos is joined by Ethan Kurzweil, a founding partner at Chemistry and former managing partner at Bessemer Venture Partners.
Full episode and show notes: https://tryterra.co/podcast/managing-partner-at-chemistry-ethan-kurzweil
He’s led early investments in Twitch, Twilio, Intercom, and PagerDuty — and in this conversation, he shares what separates good founders from iconic ones.
In this episode, we discuss:
- Why the best founders are like cult leaders
- What makes a startup idea truly contrarian
- How to build a focused, high-conviction VC fund
- The future of AI-native companiesWhether you’re raising, investing, or building
— This is a must-listen for anyone serious about startups.
Follow Ethan on X: https://twitter.com/@ethankurz
Follow Kyriakos on X: https://twitter.com/@kyriakosel
Chemistry VC: @chemistry_fund | [https://chemistry.vc](https://chemistry.vc/)
TIMESTAMPS
00:00 - Intro
02:10 - What Makes a Cult-Like Founder
05:20 - Why the Best Startups Start in SF
08:30 - The Origins of Ethan & Chemistry VC
10:20 - How He Spotted Twilio Early
13:45 - What Great Founders Have in Common
18:00 - Contrarian vs. Consensus Thinking
21:00 - Lessons from Bessemer + Transition to Chemistry
26:00 - Why Chemistry Focuses Only on Early Stage
30:30 - Building a High-Conviction VC Fund
35:00 - What Chemistry Invests In
38:00 - How to Build a Durable AI Company
43:00 - Why AI Will Reshape Healthcare First
47:10 - Ethan’s First Healthtech Investment
50:00 - Building Strong Startup Culture
52:00 - Advice for Founders Moving to SF
54:40 - Ethan’s 50-Year Future Vision
58:00 - The Future of Creativity & Learning
1:01:00 - Are Elite Universities Still Worth It?
1:03:00 - How to Reach Ethan & Final Words
AllTrails CPO: Ivan Selin
Ivan Selin is the Chief Product Officer of Alltrails. In this conversation with Kyriakos Eleftheriou, he discussed his previous experience building world-class products with Apple, Airbnb, and Uber and how he …
Notas do episódio
Ivan Selin is the Chief Product Officer of Alltrails. In this conversation with Kyriakos Eleftheriou, he discussed his previous experience building world-class products with Apple, Airbnb, and Uber and how he is currently shaping the future of the outdoors with Alltrails.Chapters00:00 Intro02:52 Career06:01 Lessons from Leading the Best Product Companies12:04 Joining AllTrails17:54 User Experience21:09 Product Focus23:55 Organizational Structure27:02 Growth Planning31:23 SEO35:43 AI38:29 Competition40:19 Crafting a User-Centric Product44:31 Culture49:08 Technology's Role in Outdoor Experiences51:01 Mental Models
Full episode and show notes: https://tryterra.co/podcast/alltrails-cpo-ivan-selin
CEO of Nucleus: Kian Sadeghi
Kyriakos is joined by Kian Sadeghi, the CEO of Nucleus Genomics, the leading company in the world, in genome testing.Full episode and show notes: https://tryterra.co/podcast/ceo-of-nucleus-kian-sadeghiAs of …
Notas do episódio
Kyriakos is joined by Kian Sadeghi, the CEO of Nucleus Genomics, the leading company in the world, in genome testing.
Full episode and show notes: https://tryterra.co/podcast/ceo-of-nucleus-kian-sadeghi
As of today, Nucleus has raised $32m, from some of the best investors in the world, such as Founders Fund, Seven Seven Six, and many more.
00:00 Introduction
02:00 Jake Paul vs Mike Tyson: How the deal happened
05:40 Make America Healthy Again in Fox News
08:00 How to generate attention
21:20 How Nucleus started
28:00 Raising the first $
33:00 How Kian raised from Keith Rabois from Founders Fund
45:25 'The modern day emperor is founders'
48:40 'The companies that win don't care about trends'
49:30 'The two startup models'
52:00 'AI is a negative signal'
55:50 'Join the founder that is insane'
56:50 Nucleus product evolution
57:20 The 23andMe acquisition
1:08:00 'DNA future and family planning'
1:16:00 Raising the Series A
1:21:00 Deadlifts
How to speak to users: Vanessa from Terra API at Imperial College
In the latest podcast, Vanessa, who leads design engineering at Terra, in a discussion on how to speak to users and create productsFull episode and show notes: https://tryterra.co/podcast/Stalk-your-users
Cofounder of ZOE: George Hadjigeorgiou - Live at Imperial College London
In the latest podcast,Kyriakos Eleftheriou is joined byGeorge Hadjigeorgiou, who's the cofounder of ZOE, efood, GoldenGroup and others, in their discussion at Imperial College London.Full episode and show …
Notas do episódio
In the latest podcast,Kyriakos Eleftheriou is joined byGeorge Hadjigeorgiou, who's the cofounder of ZOE, efood, GoldenGroup and others, in their discussion at Imperial College London.
Full episode and show notes: https://tryterra.co/podcast/Live-Interview-Cofounder-of-ZOE-George-Hadjigeorgiou
00:00 Intro
4:10 Founding ZOE
10:10 Launching the biggest study in the world in nutrition
13:45 How to convince a scientist to join
19:55 Using clinical studies as an early version of the product
23:20 COVID and go to market
26:12 Scaling the go to market
27:00 Thinking of product lines - Supplements for the Gut
29:10 Culture is what you do, not what you say
34:15 What to eat for longevity
36:45 How to invest
39:15 Action produces information
42:20 Take on the 'founder mode'
47:40 Q&A
Accel Partner: Matt Robinson - Live at Imperial College London
In the latest podcast,Kyriakos is joined by Matt Robinsonwho's a partner at Accel, and the cofounder of GoCardless and Nested, in their discussion at Imperial College London.Full episode and show notes …
Notas do episódio
In the latest podcast,Kyriakos is joined by Matt Robinsonwho's a partner at Accel, and the cofounder of GoCardless and Nested, in their discussion at Imperial College London.
Full episode and show notes: https://tryterra.co/podcast/Co-founder-Gocardless-Nested-Matt-Robinson
00:00 Intro
2:12 Launching GoCardless
7:10 Leaning into real relationships
8:48 'If you take everything you need to do in a successful business, we did the opposite.'
12:08 There's no idea that two smart people can't tear apart in a day
13:35 Finding the best idea is an irrational endeavor
18:13 Paul Graham and Sam Altman as advisors in @ycombinator
22:15 Be a King or Rich
24:35 Ensure you understand how a VC functions
29:10 Customers knew before we did
31:27 Overcorrecting as a second-time founder
35:50 Everything you do creates culture
39:00 'Being the angel investor I wanted as a founder'
40:39 Founder archetypes
43:30 Angel vs VC
46:10 Life is really easy
48:25 If you change one thing you change everything
49:45 Life is not a 0 sum game
52:10 Q&A
Bioniq CEO: Vadim Fedotov
In this conversation, Kyriakos discusses with Vadim - CEO of Bioniq on his journey from being a professional athlete to leading the personalised health supplement company.Vadim shares insights on fundraising …
Notas do episódio
In this conversation, Kyriakos discusses with Vadim - CEO of Bioniq on his journey from being a professional athlete to leading the personalised health supplement company.Vadim shares insights on fundraising challenges, the significance of early adopters, and the impact of celebrity endorsements, particularly https://twitter.com/Cristiano Ronaldo's involvement with Bionic. He also explores the future of personalized supplements and the need to address the broken food system that necessitates supplementation.Chapters00:00 Introduction01:58 Vadim's Personal Journey from Athlete to CEO08:50 Lessons from a Billion Dollar Company13:05 The Search that led to Founding Bioniq23:44 Shifting from Blood Tests to Questionnaires30:17 Integrating Wearables for Data-Driven Insights32:00 How Does it Work32:58 Making It Scale37:26 Navigating Fundraising for Complex Businesses41:42 Make or Break: First 1000 Users43:23 Cristiano Ronaldo Used Bioniq for Years49:10 Vadim's Take on the Future of Supplements50:43 Future Plans of Bioniq52:07 Addressing the Broken Food System
Full episode and show notes: https://tryterra.co/podcast/ceo-and-cofounder-bioniq-vadim-fedotov
Lance Armstrong - Live in San Francisco
On the first Terra Health day, Kyriakos - CEO of Terra, is joined by Lance Armstrong, who shares his story with 300 Y Combinator founders, live from San Francisco. Full episode and show notes …
Notas do episódio
On the first Terra Health day, Kyriakos - CEO of Terra, is joined by Lance Armstrong, who shares his story with 300 Y Combinator founders, live from San Francisco.
Full episode and show notes: https://tryterra.co/podcast/Lance-Armstrong-Cycling-Legend-Investor-Podcaster
Lance shares his remarkable journey from a young athlete to a world-renowned cyclist, detailing his early struggles, his battle with cancer, and his eventual rise to fame. He discusses the challenges of competing in the Tour de France, the mindset required for success, and the impact of his fall from grace. Lance also reflects on the importance of resilience, the power of content creation in rebuilding his life, and his experiences in investing, particularly in Uber, Docusign, Terra, and others.
Chapters
00:00 Introduction
03:30 The Early Years: From Swimming to Triathlon
05:52 Transition to Cycling and Olympic Aspirations
10:00 Facing Cancer: A Life-Changing Diagnosis
12:20 The Comeback: Returning to Cycling
14:51 The Challenge of the Tour de France
18:00 Winning Mindset: The Drive for Success
20:00 From Hero to Zero: The Fall from Grace
24:04 Rebuilding Life: The Power of Content Creation
24:20 Investing in Uber: The Chris Sacca Story
27:00 Investing in Docusign and Terra
30:06 Podcasting Success: Keys to Engaging Content
33:00 Reimagining the Future of Cycling
36:20 How to bet on people
36:42 Adapting Training as We Age
40:20 Reflections on Competition and Legacy
42:38 The Balance of Range and Consistency
45:30 'I Love Golf'
47:00 The Future of American Cycling
50:30 Motivation Beyond Winning
54:02 The Long Game in Venture Capital
57:30 Thoughts on Mindset
Full podcast and writeup → Lance Armstrong on winning seven Tours, falling from grace, and turning a $100K Uber bet into a top-performing fund
Bryan Johnson: Don't Die - Live
“Don’t Die is the only practically relevant framework that is equal to this moment in time considering the birth of superintelligence.” For the first Terra Health Day, Bryan Johnson educated 300 Y-Combinator …
Notas do episódio
“Don’t Die is the only practically relevant framework that is equal to this moment in time considering the birth of superintelligence.” For the first Terra Health Day, Bryan Johnson educated 300 Y-Combinator founders about longevity. Here’s the full discussion:
Full episode and show notes: https://tryterra.co/podcast/dont-die-bryan-johnson
03:20 The thought experiment from the 25th century
04:00 Transitioning from Die to Don’t Die
06:15 Sleep is the most important thing in our lives
13:45 Never ask yourself to have willpower
14:40 We are a family of sleep
22:35 What the evidence says about lifespan and healthspan
27:00 Don’t trust any doctor
29:00 Stem Cells
31:00 Irony is the biggest risk in Bryan’s life
39:00 Longer living species have lower basal temperature
42:25 The healthcare system is shockingly bad
44:55 The genocide score
49:30 Travel is very expensive biologically
The host: https://twitter.com/kyriakoselMore on Blueprint: http://blueprint.bryanjohnson.comMore on Terra: https://tryterra.coFull podcast and writeup → Bryan Johnson on becoming the world's most measured human, mastering sleep as a profession, and why Don't Die is the philosophy of our time
Veri CEO: Anttoni Aniebonam
"The best companies are bought, not sold." In the latest podcast, Kyriakos is joined by @RealAnttoni, CEO of @veristable, the company that helps users discover better metabolic health, who just completed an …
Notas do episódio
"The best companies are bought, not sold." In the latest podcast, Kyriakos is joined by @RealAnttoni, CEO of @veristable, the company that helps users discover better metabolic health, who just completed an acquisition with @ouraring. 03:55 How Veri Started11:00 The first Growth Hack12:10 The First Launch15:45 Evolution of the Product22:07 Meal Scores Using LLMs26:30 From the First Users to Fifty Thousand Users34:00 Initial discussions with Oura for an acquisition37:55 How to think about an acquisition44:00 Tactical acquisition advice for founders49:05 Take on The Future of Health Tech53:37 What To Expect From the Future Products of Oura55:21 Looking Back 100 Years From the Future
Full episode and show notes: https://tryterra.co/podcast/CEO-co-founder-of-Veri-Anttoni-Aniebonam
Prenuvo CEO: Andrew Lacy
'If you find cancer too early, we as doctors might not know what to do with it.' In the latest podcast, we discuss with @andrewlacy, founder and CEO of @prenuvo, the company that helps find conditions before …
Notas do episódio
'If you find cancer too early, we as doctors might not know what to do with it.' In the latest podcast, we discuss with @andrewlacy, founder and CEO of @prenuvo, the company that helps find conditions before they become crises.01:30 Midlife crisis06:40 the ‘Secret Society’08:30 Quote from a doctor: ’ If you find lung cancer too early, I don’t know what to do with it.’09:28 Bootstrapping the business early on11:00 The first clinic12:35 Early-stage growth16:30 Differences in MRI and CT18:10 Where CT scan is better19:10 The main innovations in MRI24:30 What technologies are funded in healthcare26:05 Convincing investors27:00 Learnings for entrepreneurs29:40 How Prenuvo became viral to celebrities33:40 ‘The way we do healthcare is completely wrong’
Full episode and show notes: https://tryterra.co/podcast/ceo-and-founder-of-pernuvo
Les Mills CPO: Amber Taylor
Amber Taylor is the Chief Digital Product Officer at Les Mills. In a discussion with Kyriakos , Amber discusses about her journey with Amazon, Nike, and joining Les Mills, the company behind the fitness classes …
Notas do episódio
Amber Taylor is the Chief Digital Product Officer at Les Mills. In a discussion with Kyriakos , Amber discusses about her journey with Amazon, Nike, and joining Les Mills, the company behind the fitness classes offered in over 20,000 clubs across more than 100 countries.
Full episode and show notes: https://tryterra.co/podcast/cdpo-les-mills-amber-taylor
Chapters
00:00 Introduction and Background
03:18 Training for Marathons and Mental Resilience
06:50 The Customer-Centric Approach at Les Mills
24:46 Moving Abroad for Career Opportunities
26:15 Navigating Cultural Differences and Joining a New Company
28:14 First things to do when joining as an executive
30:30 Understanding Company Culture and Ways of Working
39:08 Consistency in Fitness Programs and Personalization
49:53 The Role of VR and XR in the Fitness Industry
56:23 Creating Safe and Effective Fitness Content in VR
58:30 Les Mills' Roadmap: Helping Clubs Excel and Improving Digital Experiences
01:01:17 The Future of Fitness
Other episodes from TerraMore details on les mills
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