Senior/Staff Product Engineer

We're looking for an experienced engineer who's happy anywhere in the stack and turns complex audit workflows into product auditors rely on every day. You pick up whatever a problem needs, from the data model to the interface to the agents behind it.

What you'll do

• Build the interfaces auditors work in, partnering with design to turn complex flows into something that feels effortless
• Build and improve the agents at the core of the product, plus the harnesses and eval pipelines around them
• Make the long-running workflows behind the product reliable and debuggable, so failures surface fast instead of silently
• Use AI heavily in your own workflow to move faster, without ever shipping output you can't stand behind
• Drive the how in RFCs and technical discussions with other engineers, and partner with product on the what

What you'll need

• Have 5+ years shipping production web applications across the stack
• Write production APIs and model the data behind them so it holds up under multi-tenancy and load
• Are strong on the frontend and can build genuinely complex UI
• Get how LLM agents actually work: agents, harnesses, tool use, and measuring quality with evals
• Keep up with where AI is moving and bring the latest tools into how you work to make yourself faster
• Bring a strong product mindset and real ownership of outcomes
• Make architectural decisions, weigh trade-offs, and build things other engineers can extend
• Are comfortable with ambiguity and work things out from fundamentals when there's no established answer

Nice to have

• Hands-on experience building agents, harnesses, or eval pipelines
• Data-dense or workflow-heavy B2B products
• Scaling multi-tenant systems as data and traffic grow
• Audit, finance, compliance, or another domain where being wrong is expensive
• Early-stage startup or fast-moving engineering environment

What they offer

• Competitive salary and meaningful equity
• Learning budget for courses and conferences
• Central Berlin office with team lunches and retreats
• Flexible vacation