Senior Back End Developer

Senior Back End Developer We usually respond within a week Madbox is a fast-growing mobile gaming company with a very unique way of developing games. Everything has been made for teams to take as much ownership as possible, unleash their creativity , bring performance , and have as much fun as possible. In July 2022, we launched our Pocket Champs game worldwide which quickly became one of the top-grossing games in its category. In our fast-paced, tech-driven environment, we continuously innovate by developing and updating our proprietary modules, along with integrating third-party ones, to enhance game functionalities, ensure precise analytics, and comply with evolving regulations. This dynamic ecosystem requires meticulous coordination to keep our games at the forefront of technology and user experience. 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. Y our 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. At Madbox, we value the mindset and how you can fit with our culture by sharing common values and creating great games together. We are passionate, always pushing to the next level to learn new things. We are creative and innovative and most of all, team players 🙏 Do you recognize yourself in this mindset? Apply today and come meet us !!! ⬇️ How do we hire at Madbox? Meet the recruiter Meet the direct manager Home Assignment Meet the team Meet with Leadership NB: our offers are extended within 24h Find out more about Madbox! Team Build Automation Role Build Automation Developer Locations Madbox Paris Remote status Hybrid