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Artwork for Iron Foundry by Terra API

Iron Foundry by Terra API

Kyriakos Eleftheriou
Artificial Intelligence
NHS
Hyrox
Remote
Virgin Active
Thriva
Glovo
European Startup Ecosystem
Employment Laws
Y Combinator
Health and Longevity
Nucleus Genomics
United Kingdom
Silicon Valley
Strava
Sequoia Capital
Flo Health
Samsung Next
Portugal Startup Scene
Nicolas/tech Leadership

Kyriakos Eleftheriou, the founder and CEO of Terra API speaks with some of the best founders and CEOs in the space of health and fitness, to learn how the best are building their businesses. At TERRA API, we are on a mission to enable developers to connect and create solutions by using health data.

PublishesMonthlyEpisodes69Founded4 years ago
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EntrepreneurshipBusiness

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Artwork for Iron Foundry by Terra API

Latest Episodes

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.

Scaling through COVID from restaurant menus to full supermarkets, total downti... more

⁠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 eve... more

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 discus... more

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 ... more

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Recent Guests

George Hadjivarnava
Founder/Engineer involved with Foody and Terra API
Foody (founder), Delivery Hero (former Director of Engineering), Terra API (engineering leader)
Episode: George Hadjivarnava: Founding Foody, and building AI at Terra
Geoff Ralston
Internet pioneer and founder/leader across multiple startups and accelerator programs
SAIF AI; former YC President and CEO; Imagine K-12 founder/leader
Episode: Former Y Combinator President | Geoff Ralston
David Lee
Head of Samsung Next, Samsung's global innovation and investment arm
Samsung Next
Episode: Head of Samsung Next: David Lee - Live in LA
Douglas Gremmen
Chief Growth Officer at Hyrox
Hyrox
Episode: Chief Growth Officer of HYROX: Douglas Gremmen
Roman Bugaev
CTO, Flo Health
Flo Health
Episode: CTO + Director of AI at Flo Health: Roman Bugaev + Vladislav Nedosekin
Vladislav Nedosekin
Director of Engineering for the AI Platform, Flo Health
Flo Health
Episode: CTO + Director of AI at Flo Health: Roman Bugaev + Vladislav Nedosekin
Sacha Michaud
Co-founder of Glovo
Glovo
Episode: Glovo and Yellow.vc co-founder, Sacha Michaud
Tom Livesey
CTO and co-founder of Thriva
Thriva
Episode: Thriva CTO: Tom Livesey
David Turner
CTO of Virgin Active
Virgin Active
Episode: Virgin Active CTO: David Turner

Hosts

Kyriakos Eleftheriou
Host of Iron Foundry by Terra API and founder/CEO of Terra API
Penelope
Interviewer on the show

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Talking Points

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Strava cofounder: Mark Gainey Live in San Francisco
Q: What were the key metrics Strava prioritized in early growth to drive engagement over mere signups?
Early on we tracked two main things: how many people new users followed and uploaded in the first week, and the time they stayed active over time. A little growth from a few engaged users who bring friends was far more valuable than raw signups; we also focused on keeping users active so that their ongoing engagement fed organic growth.
Glovo and Yellow.vc co-founder, Sacha Michaud
Q: How did you convince McDonald's to collaborate with Glovo despite initial resistance from the brand?
We demonstrated incremental value and offered flexible, ad hoc support; despite their caution about associating with delivery, Glovo showed how we could drive more orders and improve operations, eventually earning a formal partnership.
Glovo and Yellow.vc co-founder, Sacha Michaud
Q: What was the first point that you realized this was going to be a big business?
The realization came as organic growth emerged without marketing spend, proving the model and brand resonated with consumers enough to sustain expansion into multiple cities and categories.
Head of Samsung Next: David Lee - Live in LA
Q: What three bets would you make if starting a new fund at Samsung Next today?
Space exploration as a transformative long-term bet; AI applications that elevate professional capabilities (e.g., AI coaching with a human touch); and the intersection of AI with sports and health in an ecosystem where deep data and trusted relationships enable premium services.
Head of Samsung Next: David Lee - Live in LA
Q: How does Samsung Next approach evaluating founders and teams, given the long feedback loops in enterprise health-tech?
Recognize the drive and the ability to operate under pressure; look for outliers who have demonstrated sustained impact, who can articulate a clear vision, and who can translate insights into durable products. Leadership consistency from the top sets the tone for the whole organization.

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Frequently Asked Questions About Iron Foundry by Terra API

What is Iron Foundry by Terra API about and what kind of topics does it cover?

This series centers on the intersection of health, fitness, and technology, with conversations that pull back the curtain on how ambitious founders and leaders scale data-driven health platforms, consumer wellness brands, and global health ecosystems. Episodes frequently explore the tension between breakthrough technology (including AI and advanced analytics) and real-world adoption, regulatory considerations, and practical product-market fit. Expect founder stories about fundraising, rapid scale, partnerships with large health networks, and navigating complex markets across Europe and the US, plus lessons on culture, leadership, and building trustworthy health tech that respects privacy and patient safety. Notable throughlines include the ... more

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Iron Foundry by Terra API launched 4 years ago and published 69 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Iron Foundry by Terra API?

Recent guests on Iron Foundry by Terra API include:

1. George Hadjivarnava
2. Geoff Ralston
3. David Lee
4. Douglas Gremmen
5. Roman Bugaev
6. Vladislav Nedosekin
7. Sacha Michaud
8. Tom Livesey

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