Senior/Staff Product Engineer (m/f/x)

Your Role

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.

A lot of what we build has no reference implementation. You're comfortable wading into something nobody has solved yet and shipping a first version that actually works.

Our engineering team is a small, flat group of builders: strong ICs who open a laptop when they see a problem instead of scheduling a meeting. Everyone owns real product and architecture decisions, and that's exactly what we want more of.

• 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

You'll fit here if you

• 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-haves that are a plus

• 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

No one checks every box. If you ship across frontend, backend, and data and own what you build, let's talk.

What We Offer

• High impact & growth: Front-row seat to scaling an AI startup with real ownership from day one

• Mission-driven culture: First-principles thinking, bold ideas, and a supportive team

• Attractive compensation: competitive salary + meaningful equity

• Personal development: Learning budget for courses and conferences

• True Berlin startup environment: Central Berlin office, team lunches, retreats, flexible vacation