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• Build and extend integrations with hotel systems: map a partner's availability, rates, and reservation models onto ours, in Kotlin, with tests and code review.

• Ship changes to the public API that travel buyers use to search and book.

• Work with real third-party APIs, with their retries, rate limits, and odd edge cases, and keep that mess out of the rest of the platform.

• Own your services in production: when a rate update or a booking fails somewhere between a hotel and a buyer, you find out why, fix it at the source, and add the monitoring that catches it next time.

• Owning a whole integration or API area end to end, from design to rollout.

• The contracting flow: the rules that decide which buyer can sell which hotel on which terms.

• Keeping availability and pricing correct at scale. Millions of searches a day depend on the data your services ingest.

• Weighing in on architecture decisions with the senior engineers you pair with.

A cornerstone of our culture is in-person collaboration. We follow a "hub" model with unique hubs in Amsterdam, London, and New York, where we regularly collaborate face-to-face, onboard customers and colleagues, hold design sessions, and host events.

We do not hire for strictly remote roles. We expect people to spend meaningful time in our hubs because this is how we maintain our culture, build trust, and move quickly together.

We're also a financially regulated company. That means high standards for security, auditability, and decision-making. This means your work ships with the rigor and reliability you'd expect from systems that move real money.

At Katanox, our values are the blueprint for how we work together and build our product.

• Team over the individual, no ego: We prioritize the success of the whole team over individual agendas. We win together, share credit, and leave egos at the door.

• Data beats excitement: We welcome bold ideas, but we commit based on evidence. We use data, experimentation, and clear hypotheses to decide what to build.

• Dare to do: We are proactive, take smart risks, and move from talking to doing. We learn by shipping and improve through iteration.

• See it, own it, and close it: When we spot a problem or opportunity, we take responsibility to drive it to completion instead of assuming someone else will.

• We apply radical candor: We care personally and challenge directly. We give and receive honest feedback so we can grow faster as individuals and as a team.

• In person first, call second: We prioritise in-person collaboration in our hubs to build trust, move quickly, and solve hard problems together.

• Build collaboratively: We actively involve the right people, share context early, and co-create solutions across teams and disciplines.

• Iterate fast and pragmatically: We ship small, learn quickly, and avoid over-engineering. We focus on solutions that work in reality, not just in theory.

Do you want to join our team as our new Software Engineer (L1)? Then we'd love to hear about you!