The role

Are you ready to dive into the world of cutting-edge video game development? Headquartered in Montreal, Behaviour Interactive is at the forefront of the gaming industry, crafting unforgettable experiences across PC, console, and mobile platforms. We’re a dynamic, independent studio of over 1200 passionate employees, with studios in Toronto (Behaviour Toronto), Rotterdam (Behaviour Rotterdam) and in the UK (Behaviour UK–North & South). Our day to day revolves around two core business focuses: Services and Original Games. Our Services team collaborates with gaming and entertainment giants like Disney, Sony, Activision, and Nintendo, delivering exceptional work-for-hire development and pioneering immersive location-based entertainment (LBE). Meanwhile, our Original Games unit pushes our creative limits, with our signature IPs, including the iconic Dead by Daylight. Join us and be a part of the future of interactive entertainment!

At Behaviour Interactive, we believe in giving everyone a fair shot. We embrace a diverse and creative environment where everyone is celebrated. We value folks of all ages, sex, ethnicity, colour, ethnic or national origin, religion, sexual orientation, gender identity, civil status, disability, or any other protected characteristics as per applicable law.

Help shape the next era of an iconic survival franchise.

For over a decade, 7 Days to Die has captivated more than 20 million players worldwide. Now, with Behaviour Interactive joining forces with The Fun Pimps, we’re entering an exciting new phase of growth, bringing together deep live game expertise and the creative legacy behind the franchise. This is a rare opportunity to help elevate a beloved game, scale its long-term potential, and shape what comes next for millions of players.

As a Senior Back-End Programmer, you will lead the development and integration of back-end systems for 7 Days to Die . This role focuses on building and maintaining online services, integrating existing technologies such as Kraken, and supporting system migrations.

You will collaborate closely with designers, and central technology teams to deliver reliable and scalable solutions. The ideal candidate is comfortable working across both game development and back-end services, with strong expertise in C#, as well as some experience with Unity, TypeScript, and Node.js.

In this role you will :

Design, develop, and evolve backend features while actively contributing to the existing codebase. Integrate the back end in the game. Drive system migrations and backend architecture improvements to support scalability and long-term maintainability. Collaborate closely with cross-disciplinary teams (Design, central tech/Kraken teams) to ensure seamless data flow and validation. Define and document technical specifications, ensuring clarity across stakeholders before implementation. Optimize backend systems for a high-availability live environment, including performance tuning, debugging, and testing strategies.

What we're looking for :

9+ years of experience in backend or game development, with strong exposure to scalable systems. Proven experience developing backend services using TypeScript and Node.js. Strong programming skills in C# with hands-on experience in Unity (key strength). Experience working on both game systems and backend services, with the ability to bridge both worlds. Solid understanding of REST APIs, WebSockets, and data validation flows for live services. Experience with databases (SQL and/or NoSQL) and performance optimization in live environments.