Lasse Tange

I am a full-stack developer who plans, architects and builds web and mobile applications end to end, with a strong grounding in TypeScript. I am equally comfortable on the frontend and the backend, working with a wide range of technologies — everything from React to PostgreSQL to the cloud.

I have worked with AI since OpenAI released GPT-3, and I have built and launched four AI products of my own — including SQLAI.ai, which is profitable and has over 150,000 users. That work covers the practical side of applied AI: RAG, embeddings and vector search, prompt design and agentic workflows.

I speak Danish, German and English.

• Analytical: I dig into the problem and the options before committing to a concrete solution.
• Creative: I challenge conventions and established approaches to find the best solution.
• Result-oriented: I value trust over control and micromanagement, and a process that is measured by what it delivers.
• People-oriented: I enjoy working with people from all kinds of educational backgrounds, and I find that talking to them is essential to building quality software.
• Quality-driven: I combine fast, pragmatic problem-solving with software built to last.

I take on selected freelance and advisory work, and I am open to startup ideas as well. Send me an email if that sounds like what you need.