Hagen Hübel
Serial technical founder.
I turn ideas into companies. Not in theory — I've done it six times, each one starting alone. First customers, product-market fit, team, investors, exit. Then I do it again.
Between ventures I work with other founders — as a technical co-founder, advisor, or consulting partner. I bring the full cycle: building a product people actually want, growing the team that delivers it, and navigating the business decisions along the way.
“A good idea is worth nothing without a product. A product is worth nothing without customers. I build both.”
Starting from zero
Every venture I've built started alone — no team, no funding, no customers. I find the first users, validate the product, and prove the market before scaling anything.
Building the team
Once product-market fit is clear, I bring in the right people. I've built dev teams, marketing teams, and leadership layers — and I know the difference between hiring too early and too late.
Advisor & sparring partner
Between ventures I work with founders, investors, and acquirers. For founders I bring the full cycle — idea, product, team, growth. For investors and acquirers I do technical due diligence: assessing codebases, architecture, and engineering teams before a deal closes.
nestfainder.ai
Founded and built a multi-service location intelligence platform - Go microservices, Python/FastAPI, Flutter, PostGIS, pgvector, LLM-generated city narratives, TOPSIS scoring across 22 000+ cities worldwide.
infobud.ai - Fully Automated News Agent
Co-founded and led the engineering of an AI-driven news aggregator with automated content pipelines, NLP classification, RAG retrieval, and multilingual summarization at scale.
TokenForge - Tokenization-as-a-Service
Co-founded tokenforge GmbH (Berlin) and grew engineering from a single developer to 15. Tokenization platform for real-world assets serving 25+ institutional clients — smart contracts, full token lifecycle on Ethereum, Gnosis, Polygon, and Avalanche, and eWpG-compliant security tokens: co-authored ERC-7570 and ERC-7551, presented to BaFin in 2021. Sold my shares in 2023.
Dedified - Swiss FinTech (Exit 2021)
Co-founded dedified GmbH (Switzerland) as CTO: a reward-based micropayment system for eCommerce on e-money core-banking infrastructure. Grew engineering to five, shipped the first production version, closed the first major enterprise client, reached €1M ARR in year one — and exited within a year.
Blockchain & Web3 - YAIR & Ethereum dApps
Entered Web3 as CTO of YAIR (Berlin): a blockchain-secured, gamified platform for the new-media art market, shipped to the Android and iOS app stores within a year. Smart contracts and dApps on Ethereum.
First React Native App - Zizzle eLearning
Shipped one of the early production React Native apps as CTO of Zizzle eLearning Inc. (Salt Lake City). Cross-platform iOS/Android app for Chinese language learning with subscription billing and audio content delivery.
Mobile Engineering - iOS Native
Started mobile engineering with native iOS development at Yatego, building the Yatego Local app with social media integration, Cloudinary, and Facebook APIs.
First Startup Funding - Medolan UG
Founded Medolan UG, an eHealth startup in Düsseldorf, and led the full software stack as CTO. First institutional startup funding received.
High-Performance Web Applications
Transitioned to web-scale engineering - building high-traffic marketplace backends, REST APIs, and e-commerce platforms. Later led the full restack of Yatego, one of Germany's largest online marketplaces.
MIS Software for the Print Industry
Developed a comprehensive Management Information System for the printing industry - covering CAD/CAM workflows, cost calculations, and CMS integration for production planning.
Dienstplanberechnung für Krankenhäuser
Shipped roster calculation software for hospital shift planning. First commercial customers: Klinikum Frankfurt (Oder) and Klinikum Strausberg.
First Software - Built & Sold at 15
Built and sold the first commercial software at 15: a video rental management system (Verwaltung für Videotheken), starting on a C64 with BASIC before moving to Assembler.
Have an idea worth building?
I'm open to co-founding, consulting, and advisory roles — for early-stage ventures and established companies alike. If you feel like nestfainder.ai is something you want to be part of in any shape or form, I'd love to hear from you.