Joakim Sandroos

I've built my career at the intersection of rigorous science and production engineering. At Collectia I have actual systems deployed in production: AI/ML models, generators, summarizers, memory-persistent LLM pipelines — running across 5 Nordic markets in a regulated financial environment. I also designed the MLOps foundation they run on: containerisation, CI/CD, one source of truth, idempotence and GDPR- and AI-act compliant model governance. My stack is Python-native. RAG, vector & graph databases, do learning, agentic architectures, LLM integration. I use Claude Code as my primary development assistant. PhD in astroparticle physics from the IceCube experiment — measuring atmospheric neutrino flux at the South Pole using Bayesian iterative unfolding. That's where I learned to look under the bonnet of my models and to take uncertainty seriously. Since then I've moved into finance, but the scientific rigor stayed with me. I also run Longship Invest, a regulated crypto fund. I build the quant models myself. When I'm not doing that: Rhythm guitar in a Swedish doom metal band, hanggliding over the French Alps, and leading scouts into the wilderness. I've spent time 3 km underground at a neutrino detector in Japan. I'll go on any adventure if the challenge is interesting enough.