Careers
Come build AI-driven financial management
Why Truster?
We're building Finland's smartest financial platform for light entrepreneurs and sole traders. AI isn't a bolt-on for us — it's the core of the product: we automate invoicing, bookkeeping and taxes so the entrepreneur can focus on their own work.
How we work
Ownership from day one
Small teams, real responsibility — you ship features tens of thousands of entrepreneurs use the same week.
AI-first engineering
AI is the core of the product and of how we build it — agents, modern LLM tooling and a codebase that moves fast.
Nordic work-life balance
Sustainable pace, flexible hours and remote-friendly work — good work comes from rested people.
Growth across Europe
Finland is live, Sweden is opening, and more EU countries are on the map — your work scales with us.
The product you'll build
An assistant that actually answers — one of the surfaces our teams own end to end.
Illustration: the user asks the assistant a question and receives an instant answer with cited help articles.
Craft users can feel
Clear payslips, honest numbers — the details are the product.
Illustration: the user opens a payslip where gross pay, withholding and fees are itemised and the net pay is shown clearly.
Open role: Senior AI Developer
We're looking for senior AI developers who command Claude and modern LLM agents at a pro level. You'll build production AI systems that serve tens of thousands of entrepreneurs.
What you'll do
- Build and optimise production LLM agents (incl. Claude) with tool use
- Design prompts, evaluations and fine-tuning that are reliable and measurable
- Integrate AI into invoicing, bookkeeping and tax workflows
- Keep production stable and fast — latency, cost and quality under control
What we're looking for
- A strong engineering background (TypeScript and/or Python)
- Experience with LLM applications in production — especially Claude
- A grasp of agents, tool use and retrieval-augmented generation (RAG)
- The drive to take ownership and ship quality quickly
Interested? Apply now
Fill in the form and attach your CV (PDF). Show us how you command Claude like a pro.