The ICONS Show

Christian Miele grew up carrying one of Germany's most recognizable names, without ever being a shareholder in the family company. That tension shaped everything that came next: building his own startup, becoming a VC, and backing the highest valued private company in Europe.

In this episode, Christian explains how a random WhatsApp from a friend working in the French government led him to Mistral, now valued at $21B, and why he believes the smartest career advice for young people right now is to become an electrician, given Germany's 250,000-person shortage. He also breaks down why he thinks "the math ain't mathing" on Germany's budget, and makes the case for Europe's shot at staying relevant through robotics, AI, and energy.

Guest: Christian Miele

Timestamps:

Julian Teicke is a serial founder, in the last 12 months alone, he's co-founded four companies. But before any of that, he spent 10 years as CEO of the company that made his name, scaling it to €800M in revenue and 1,500 people.

He raised the money using an "ultimate experiment of manifestation," as he calls it: find the largest round ever raised in your vertical at your stage, then take it times two. It worked — Series A went from a $15M benchmark to $30M raised, Series B from $120M to $240M, Series C from $300M to over $600M. Then he tells you the part most founders never say out loud: it came from wanting to be seen, not from a calibrated goal.

In this ICONS episode, Julian gets specific about what actually happened — not the sanitized version. He explains the difference between building from "dirty fuel" (a paradigm he calls the dominant theme in venture capital, built on exploiting childhood trauma) and building from a grounded place. He recounts the moment an employee confronted him directly: that his unresolved dynamic with his father was scaling to every corner of the organization, taking the whole team hostage. And he admits, on the record, that going full-stack instead of building a broker model was the wrong choice — one that cost the organization its spirit.

He also walks through what he's building now: The Delta, a Berlin campus and venture builder that started as a way to process the 30 business ideas he generates in a single hour, and BAD1, the conference that grew out of it. He makes the case for why Berlin is the ecosystem worth betting on, backing it with the ecosystem's own 10x ambition — from €169B to €1.7T by 2036, with 250 unicorns and €30B in annual venture funding. And he closes on something AI still can't do, no matter how good the models get.

Watch or listen to the full episode on our channel or Spotify.

Guest: Julian Teicke, Co-Founder of wefox, Founder of The Delta & BAD1

Topics Discussed

Ramin Hasani spent a decade studying a 2-millimeter worm before anyone outside academia knew his name. Then he solved an equation that had gone unsolved for over 100 years, published it in Nature Machine Intelligence, and woke up to an inbox full of term sheets he never asked for. That paper became Liquid AI.

While every other foundation model company was racing to build bigger transformers and consume more compute, Ramin went the other direction. Liquid foundation models cut the exponential energy cost of AI down to linear — same output quality, a fraction of the hardware. They run on phones, laptops, and cars. No data center required. Today his models are downloaded 1.4 million times per week on Hugging Face. Liquid AI raised $270M at a $2.2B valuation with 110 people — while the companies they compete with raised that in a single week.

In this ICONS episode, Ramin covers the full arc — from growing up in Iran with an anatomy professor uncle who made him study the human brain, to the two professors at Politecnico di Milano who introduced him to brain-inspired computing, to the PhD at Vienna and MIT where he discovered that a microscopic worm with 302 neurons could control 95 muscles better than any robot ever built. He explains the mathematics behind liquid neural networks, why the transformer architecture hits an inevitable energy wall, and what two years at Vanguard — the $8 trillion asset manager — taught him about building for real enterprise value. He also talks about closing Mercedes-Benz in four months, why he thinks 85% of AI token spend is waste, and what he believes the world looks like in 25 years when humans stop talking to each other entirely.

Topics Discussed

Martin Varsavsky has never had a job in his life. Not one. He arrived in New York at 26 as an Argentine refugee, convinced a Nobel Prize-winning scientist to build a biotech company with him, and has been founding unicorns ever since — six in total, spanning telecoms, fertility, and now AI medicine. At 66, he has just launched Certuma, the first medical AI company explicitly designed to be FDA-regulated and capable of writing prescriptions. The trigger: an AI correctly diagnosed a condition in his eye, recommended a specific medication, and then said 'I'm not a doctor.' He decided to fix that. In this ICONS episode, Martin covers his entire arc — from the pre-money valuation insight that unlocked entrepreneurship for him, to the meeting with the King of Spain where he said fertility — not nationalism — was the country's greatest threat. He talks about the technology his companies are building to make having children easier, the ethical lines he draws on designer babies, why he believes frozen embryos should be stored as a backup for civilization, and how cycling 14 hours a week at age 66 means he never had to plan for his own decay.

Oskar Hartmann has co-founded 20+ companies, invested in 150 as an angel, found 15 unicorns from seed stage, broke two world indoor rowing records, wrote a million-copy best-seller, and co-founded Accumulator — a financial infrastructure supporting private-company ownership for founders.

In this episode of ICONS, he gives the most unfiltered account of building at scale we’ve ever heard: the €500K liability that nearly destroyed him, the 2013 hospital breakdown, the frameworks of alternating and mini lives that rebuilt hi

Topics Discussed

Marc-Alexander Christ, co-founder at SumUp, pulls back the curtain on how a five-founder startup launched simultaneously in Dublin, Berlin, and Bulgaria in 2012 and grew into one of Europe's most formidable fintech companies — serving 4 million merchants across 36 countries at an approximately €8 billion valuation. From the early mistake of hiring 100 salespeople before achieving product-market fit, to the iron discipline of a 12-month payback period that governs every growth decision, to a planned proprietary stablecoin - Marc delivers a rare, unfiltered account of what it actually takes to build payments infrastructure at global scale for small merchants who were almost entirely underserved before SumUp existed.

Marc-Alexander Christ, co-founder and Head of Payments at SumUp, pulls back the curtain on how a five-founder startup launched simultaneously in Dublin, Berlin, and Bulgaria in 2012 and grew into one of Europe's most formidable fintech companies — serving 4 million merchants across 36 countries at an approximately €8 billion valuation. From the early mistake of hiring 100 salespeople before achieving product-market fit, to the iron discipline of a 12-month payback period that governs every growth decision, to a planned proprietary stablecoin — Marc delivers a rare, unfiltered account of what it actually takes to build payments infrastructure at global scale for small merchants who were almost entirely underserved before SumUp existed.

Topics Discussed

In this episode of ICONS, host Roman Kirsch sits down with Tushar Ahluwalia, Co-Founder of Razor Group, to unpack one of the most complex entrepreneurial journeys in e-commerce. Tushar's career spans three continents and three ventures: building India's first major D2C fashion brand (SBL) that reached 100 crores in revenue, creating Razor Group into a $700 million revenue aggregator that acquired 300+ Amazon businesses, and now launching ADA AI to solve supply chain complexity with artificial intelligence. This conversation reveals the operational playbooks, capital strategy, and leadership principles behind building at massive scale—plus the hard-earned lessons from navigating board dynamics, capital stack challenges, and market timing.

In this episode of ICONS, host Roman Kirsch interviews Heini Zachariassen, founder of Vivino and current chairman of the board, who is now building Vota (vota.org), a quality rating system for restaurants. Growing up on the remote Faroe Islands (population 50,000) between Norway and Iceland, Heini developed the entrepreneurial belief that you can walk to parliament and knock on the prime minister's door to create change. This island mindset shaped his approach to building global businesses. Despite knowing nothing about wine, Heini transformed his intimidation at wine store "walls of wine" into the world's largest wine database with over 15 million wines and over 70 million users. Starting as a simple wine scanning app competing against 600 other wine apps, Vivino succeeded by focusing relentlessly on match rate over aesthetics, achieving 70-80% word-of-mouth growth with near-zero marketing spend and reaching a billion-dollar valuation during the 2021 boom. Through surviving the COVID boom-bust cycle and transitioning from community to marketplace, Heini shares hard-won lessons about founder-market fit, data moats, and building sustainable consumer businesses in competitive markets. Today, he remains connected to his Faroe Islands roots, regularly visiting home where they now boast a two-star Michelin restaurant while he builds a whiskey distillery to help diversify the local economy beyond fishing.

In this episode of ICONS, host Roman Kirsch interviews Barbara Martin Coppola, one of the most accomplished global marketing and digital transformation executives of our time. Barbara shares her playbook for scaling iconic brands globally, having led transformations at Samsung Korea, Google/YouTube, IKEA, and Decathlon. Her unique perspective comes from successfully navigating vastly different corporate cultures while maintaining brand consistency and driving exponential growth. From turning IKEA from a digital skeptic into a €12 billion e-commerce powerhouse to scaling YouTube's global expansion through localized community building, Barbara reveals the tactical frameworks that work across cultures and industries.