Sergiej Rewiakin (Soft)
Mars is NOT the limit
Tech Leader, CTO & Entrepreneur
Building and scaling tech companies for 18+ years—from first commit to global scale.
AI-savvy. Execution-obsessed. Built for hyper-growth.
About me
I'm a technology-agnostic CTO and co-founder with 18+ years of experience building, scaling, and exiting products across FinTech, MedTech, Health & Fitness, Logistics, and marketplaces.
I specialize in rapid execution and go-to-market: taking products from the first line of code through hyper-scaling and successful exits. Along the way, I've led and built high-performing teams at companies like Freeletics, Caspar Health, Kontist, Neufund, Movinga, and multiple early-stage startups, with two successful exits (CleanAgents → Helpling, HelloCare → Pflegix).
My fascination with technology started early—assembling my first Pentium 166 and realizing that computing power wasn't just hardware, but possibility. Since then, I've watched Moore's Law unfold in real time, from limited memory and floppy disks to cloud scale, AI, and systems that empower people to build faster and think bigger than ever before.
Today, we're living in the most exciting era of technology yet. I believe software and AI are tools for exploration, leverage, and ambition—enabling us to create more, move faster, and push beyond what once felt impossible. My mindset is simple: keep exploring, never settle, move fast, and build boldly. Mars is not the limit.
Projects
Sergiej Rewiakin — VP Engineering, CTO, Tech Co-founder. Berlin, Germany.
- Head Of Tech Caspar Health Apr 2023 – Present Digital rehabilitation, MedTech. Berlin.
- Director Of Engineering Freeletics Feb 2021 – Feb 2023 #1 fitness app in Europe. Munich.
- VP Of Engineering Kontist Jul 2019 – Feb 2021 Tax-free banking, bookkeeping, tax management. Fintech.
- VP Engineering Neufund Jan 2018 – May 2019 Security tokens, blockchain. Berlin.
- CTO senden24 GmbH Jan 2017 – Mar 2018 On-demand carrier service. Berlin.
- Co-founder, CTO HelloCare.de Jun 2015 – Jan 2017 Exit to Pflegix. Elderly care marketplace. Hamburg.
- Interim CTO Movinga Nov 2015 – Dec 2016 Marketplace for moving services. Berlin.
- Founder, CEO CleanAgents.com Jun 2013 – Nov 2015 Exit to Helpling. Domestic cleaning marketplace. Berlin.
- Founder TurnYourTime.com Jun 2012 – May 2013 Collaborative consumption. Berlin.
- Sales Team Leader 9flats.com Jun 2011 – Jul 2012
- European Tours Contiki Holidays Jan 2007 – Mar 2009 London.
Working Style
Rapid execution and 0→1 mentality. I evangelize Agile product development with quick market rollout and in-flight learning.
- Time to Deploy and Number of Deploys as core engineering KPIs—velocity, test coverage, lead to production.
- Trust, ownership, and accountability as team values; empower teams to embrace risk and ambiguity while training recovery.
- Prototype and innovate with lightweight tooling; break complexity into small executable tasks.
- Methodology: One Week Sprint—ownership and accountability drive velocity. weeksprint.netlify.app
Strive for 59 min to MVP. 14 startups launched; 2 exited. Sustainable, tech-enabled culture from day one.
Highlights
- Exits: CleanAgents → Helpling (2015), HelloCare → Pflegix (2017)
- PayPal Battlehack Winner 2013 (Clean Berlin app)
- Certified Agile Leadership I (Scrum Alliance, 2020)
- Key companies: Caspar Health (MedTech), Freeletics (Fitness), Kontist (Fintech), Neufund (Blockchain)