About the role
The AI CFO is the heart of Sumary. It sits on every page, knows what the user is looking at, and does real accounting work on their behalf: building reports, setting up workflows, explaining numbers and finding what doesn't add up. As a Senior AI Engineer, you will own how it works.
You will build the agent itself: the loop, the tools it calls, the sandbox it works in and the context it reasons over. You will work closely with our research team and our Applied Accounting Researcher, so every improvement is measured against real accounting work. You will be based in our Copenhagen office.
What you'll do
- Design and build the AI CFO's agent loop, tools, sandbox and context management
- Give it the right context on every page, and the tools to act on the user's behalf
- Make it fast, reliable and safe, with clear guardrails on what it can change
- Ship improvements measured by our evals, and add evals for every new capability
- Choose and combine models, balancing quality, speed and cost
- Help bring Sumary's data and tools to agents outside Sumary, through our MCP server
What we're looking for
- 3 to 5 years of experience building production software, with recent hands-on work on LLM agents
- Strong TypeScript, and experience across the stack
- Experience with tool use, context management and measuring agent quality
- Product sense: you care how the agent feels to use, not just whether it works
- Ownership and autonomy
Nice to have
- Experience with MCP, agent sandboxes or durable workflow engines such as Temporal
- Experience in finance, accounting or another domain where correctness matters
- Python