Senior Back End Developer

Madbox is a fast-growing mobile gaming company with a very unique way of developing games. Everything has been designed so teams can take as much ownership as possible, unleash their creativity, see their games reach millions of players, and have fun on the way. Casual people, Mad ambition

At Madbox, we empower our teams to push boundaries, take ownership, and craft innovative mobile games that engage millions.

As a Senior Back End Developer, you'll work across our Game Production, Data, and Central Game Tech teams: designing and scaling public-facing APIs in Go on GCP, maintaining TypeScript/Node.js internal tooling on AWS with React frontends, and contributing to the CI/CD ecosystem that powers game and API delivery.

If you thrive on optimizing performance at scale and want direct impact on millions of players, join us in creating the next generation of hit games.

Your future responsibilities and scope:

• Design, build, and scale public-facing APIs in Go, hosted on GCP, serving millions of users with high availability and low latency

• Ensure backend reliability through comprehensive testing strategies and safe, rollout processes for API releases

• Monitor, troubleshoot, and optimize backend systems using Datadog, ensuring proactive reliability for player-facing services

• Collaborate with game teams, data engineers, and product managers to align technical solutions with business goals

• Contribute to and improve CI/CD pipelines — including GitHub Actions workflows with Terraform, and supporting Jenkins-based game pipelines alongside the dedicated owner

• Support the development and maintenance of internal tools and services in TypeScript/Node.js, hosted on AWS

The profile we are looking for:

• 5+ years of professional experience in backend development, with strong proficiency in Go and solid knowledge of TypeScript/Node.js, and familiarity with React for contributing to internal tool frontends

• Strong experience with MongoDB as a primary database

• Proven experience designing and operating scalable microservices and RESTful APIs, with a strong focus on performance and reliability

• Hands-on experience operating cloud infrastructure at scale, including managed services and networking. GCP experience is preferred; AWS experience is also valuable

• Familiarity with CI/CD practices - Terraform and GitHub Actions or Jenkins

• Comfortable working with observability tools, particularly Datadog

• Excellent communication skills; able to work in English in a cross-functional, international team

Nice to have:

• Experience in the gaming industry or with real-time, high-throughput backend systems.

• Experience building CLIs or developer tooling.

Please note: unfortunately, this position is not open to relocation and we cannot offer visa sponsorship.

Compensation transparency

The salary range for this role is €65,000–€75,000 gross/year. Final compensation is based on the candidate's experience and demonstrated skill level.

How do we hire at Madbox?

• Meet the recruiter

• Meet the direct manager

• Home Assignment

• Meet the team

• Meet with Leadership

Diversity & Inclusion

At Madbox, different backgrounds, cultures, and ways of thinking aren't just welcome; they're part of what makes the team good. We hire on talent and fit with our values, regardless of who you are or where you come from.

AI in our process

Parts of our hiring process may get a hand from AI - things like summarizing responses, or flagging inconsistencies, and taking notes during interviews to focus on what matters the most: the candidates. Everything is there to help our recruiters, not to decide anything. Every final call on hiring is made by a human. For full details on how your data's handled, you can check our .