Hans Fjällemark

From idea
to shipped

End-to-end product development across web, mobile, and AI. I turn concepts into production software.

Let's talk
Hans FjällemarkHans Fjällemark

My Philosophy

I build products from the ground up and set them up for long-term success. End-to-end development, AI where it makes sense, and flexibility to stay on as your technical partner or hand off cleanly when your team is ready.

My Stack

The best stack is the one that gets out of the way. I lean heavily on battle-tested platforms because they handle the undifferentiated work. That means production-ready infrastructure in hours, not weeks, and more time building features.

Frontend

React and Next.js for web, React Native and Expo for native. The stack that coding agents know best—optimized for velocity without sacrificing craft.

Data

Postgres on managed platforms like Neon or Supabase. Reliability and relational guarantees without the ops burden.

Infrastructure

Vercel for most projects. Can deploy anywhere—AWS, Fly, bare metal—but prefer staying close to the edge when it counts.

AI

AI SDK as the foundation. Workflow for durable execution. Provider-agnostic architecture so you're never locked in.

My Experience

2026

Independent

AI-Driven Product Development

Shipping AI-powered products with obsessive attention to craft. End-to-end development across web and native, from architecture to pixels. Partnering with founders and teams who expect quality and delivery.

2020

Signal Insights

Co-Founder & CTO

Co-founded a competitive intelligence platform and ran engineering. Built large-scale data collection infrastructure, ML-powered analytics, and customer-facing products. Grew the team from zero to acquisition by Similarweb.

2014

Cignium Technologies

VP Product Engineering

Led product engineering for sales enablement tools used by 700+ agents daily. Real-time lead distribution, performance tracking, and workflow automation. Built and managed distributed engineering teams across multiple time zones.

1999

Independent

Developer & Consultant

Built products through every major web era—from Classic ASP and Flash to modern React and React Native. Architecture consulting, hands-on development, and technical leadership for startups and enterprises. A track record of adapting to whatever the job requires.

Let's build
something great

hans@fjallemark.com