We’re building a world-class team to redefine knowledge work with AI

Zeno is a legal AI startup building a platform that helps lawyers research, review, and draft documents with real legal reasoning — not just text prediction. We’re developing technology that can:

• Search and retrieve statutes, case law, and commentary with high precision.

• Reason step-by-step, applying legal tests and weighing precedents.

• Explain every answer transparently, so lawyers can trace conclusions back to the exact sources.

Where most tools automate surface-level tasks, we’re focused on replicating the way lawyers actually think through legal problems, making depth and trust the foundation of everything we build.

You’re joining an early-stage startup that is already working with leading firms. Backed with €3M in seed funding, we’re now scaling a team of engineers and thinkers who want to solve real problems, drive innovation, and create lasting change in the legal sector.

The role

As a Product Engineer at Zeno, you’ll build product experiences that users rely on for serious, high-stakes work.

This is not a “take tickets and implement UI” job. You’ll work end-to-end: from shaping what the product should do, to building it, to measuring whether it actually works in the real world. You’ll sit at the intersection of product thinking and engineering execution, turning complex capabilities into simple, fast, dependable workflows.

If you enjoy shipping quickly and care about correctness, clarity, and craft, you’ll have a lot of room here

What you’ll be working on

• Own outcomes, not tasks

  Take responsibility for a user problem area and drive it from idea to shipped experience to iteration.

• Build full-stack product features

  Implement workflows across frontend and backend, including data modeling, API design, UI state, and performance.

• Turn complexity into usable behavior

  Integrate underlying services and models into features that feel predictable, explainable, and safe to use.

• Design for evolving state

  Build experiences that hold up when inputs change, information updates, or work needs to be revisited later.

• Raise the engineering quality bar

  Push for maintainable patterns, good abstractions, strong defaults, and fewer “one-off” solutions.

• Ship fast with discipline

  Use small increments, feature flags where needed, and tight feedback loops—without letting quality degrade.

What we’re looking for

• Strong full-stack capability

  You’ve shipped real product features end-to-end and understand the tradeoffs across frontend, backend, and data.

• High product sense

  You naturally think about user experience, adoption, edge cases, and what “good” looks like—before writing code.

• Comfort in complex systems

  You’ve worked in products with real state, permissions, workflows, or domain constraints (not just CRUD apps).

• Excellent judgment

  You can make good calls under ambiguity, communicate tradeoffs clearly, and keep momentum without creating mess.

• Engineering craft

  You care about performance, reliability, testing, and clean interfaces. You leave systems better than you found them.

• Strong collaboration

  You work well with designers and PMs, and you can translate fuzzy problems into concrete solutions.

Who you are

• You want to build software that people trust and depend on.

• You like ownership and responsibility, and you don’t wait for perfect specs.

• You can go from “this feels wrong” to a concrete proposal and a shipped fix.

• You enjoy solving hard problems without turning them into complicated products.

• You want your work to matter: to users, to the product, and to the long-term shape of the system.

The ride from startup to scale-up

Things will break, priorities will shift, and there won’t always be a playbook. You’ll wear multiple hats, ship fast, and learn faster. Some weeks will feel chaotic, some problems will feel bigger than your role. That’s the nature of the ride from startup to scale-up: if you need stability and structure, this won’t fit. But if you thrive on ownership, speed, and building from zero, you’ll love it here.

Why join us

• Be part of a product-driven team reinventing how legal professionals work.

• Join early and shape the foundation of a fast-growing, high-impact startup.

• Work in a place where hierarchy doesn’t matter — only the best ideas do.

• Collaborate with a top-tier team of engineers, researchers, and entrepreneurs.

• Competitive compensation, employee benefits and strong upside as we grow.

• An inspiring place to work in the heart of Rotterdam.

Shape the future of legal work with us.

Department

Engineering

Locations

Rotterdam