Hi. I'm Hagen.
CTO · Co-Founder · Software Engineer
I build ambitious technical products — from AI-powered location intelligence and automated news platforms to tokenization infrastructure on Ethereum. 30+ years of code. 10 years of CTO leadership. One exit.
nestfainder.ai
Location intelligence platform · Jan 2026 – present
Comprehensive platform helping users discover optimal cities for relocation based on personalized preferences. 22 000+ cities worldwide, 25+ preference categories, 67+ filter dimensions, AI-powered TOPSIS scoring across 12 quality-of-life categories.
AI & Machine Learning
Production LLM systems, RAG pipelines, vector databases, semantic search — applied to news, location intelligence, and recommendation engines.
Blockchain & Web3
Smart contracts, DeFi infrastructure, ERC-20/721/1155 tokens, tokenisation-as-a-service — six years deep in Ethereum and L2 ecosystems.
Backend & Architecture
High-throughput Go services, distributed systems, PostgreSQL / PostGIS, Kubernetes — from startup MVP to enterprise-grade scale.
Mobile & Cross-platform
Five years building React Native and Flutter apps for iOS & Android. Previously contributed to react-native-fs (2 000+ ⭐).
Looking for a technical co-founder or CTO?
I'm open to advisory, interim CTO, and co-founding roles in AI, Web3, and deep-tech. Let's build something remarkable.