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Engineering

Developer Productivity Engineer

CopenhagenFull-time

Make every part of how we build software agent-friendly, so our engineers and their agents ship faster and better.

About the role

Our engineers work alongside AI agents every day, writing code, reviewing changes and shipping. As our Developer Productivity Engineer, you will make that work as fast and as good as it can be.

This is a modern take on developer experience and DevOps. You will shape our codebase so agents can navigate and change it safely, keep the documentation in our code current and useful, and bring agents into CI/CD and code review. Your users are our engineers, and you measure your success by how fast and how well they ship. You will be based in our Copenhagen office.

What you'll do

  • Structure our codebase so agents and people can navigate, understand and change it safely
  • Write and maintain the agent instructions, skills and rules that encode how we work
  • Generate high-quality documentation in the code, automatically where possible, and keep it current
  • Bring agents into CI/CD, from agentic code review and test generation to fixing failing builds
  • Keep builds, tests and deploys fast and reliable
  • Find where engineers lose time, and fix the biggest problems first

What we're looking for

  • 3 to 5 years of experience in software engineering, DevOps or developer experience
  • Daily, hands-on use of AI coding agents, and clear views on what makes them work well
  • Experience building CI/CD pipelines and developer tooling
  • Strong TypeScript, and comfort working across a large monorepo
  • You treat internal tools as products and your colleagues as their users

Nice to have

  • Experience with monorepo build tooling
  • Experience building agents, or tools for agents
  • Experience measuring developer productivity

Why Sumary

  • AI is the foundation of everything we build, not a feature bolted on.
  • Backed by byFounders, Partech, and Tenity, alongside angels like the co-founder of Zendesk.
  • A small team with real ownership. What you build reaches accounting firms and finance teams across Europe.
  • Offices in Copenhagen and London.

Apply for this role

Send your CV and a few lines on why you are excited about Sumary to careers@sumary.com. We read every application.

Apply now
Team
Engineering
Location
Copenhagen
Type
Full-time