Senior Client Platform Developer

About us Hacksaw Studios is a Stockholm-based game studio focused on creating innovative, high-quality gaming experiences. With a strong emphasis on performance, reliability, and precision, we bring ideas to life through deep technical expertise and close creative collaboration. We have wide distribution, and our games are played by millions of people every month by players all over the world. We are now looking for a Senior Client Platform Developer to join our growing Stockholm team. In this role, you will take a leading technical responsibility for our client-facing platforms and tools, helping shape architecture, drive best practices, and ensure a high-quality experience for players and internal teams. The Role Your key responsibilities include: Technical Ownership & Architecture Own and evolve core client-side platform components, including in-game UI systems and client-communication layers. Contribute to architectural decisions around scalability, maintainability, and long-term platform strategy. Identify technical debt and proactively drive improvements and refactors. Platform Integration & Cross-Team Collaboration Lead and design client-side integrations between our games, external platforms, and third-party studios using our OpenRGS platform. Act as a technical partner to backend teams, ensuring coherent end-to-end platform architecture. Provide guidance and best practices for external studios integrating with our platform. Tooling, Automation & Developer Experience Design, build, and maintain internal tooling (e.g. mock clients, launchers, automation scripts, CI helpers) to improve developer productivity and reliability. Advocate for better workflows and testing strategies. Technical Leadership & Support Serve as a go-to expert for complex platform-related issues, supporting developers, QA, and tech support. Drive root-cause analysis of production issues and help define preventative measures. Mentor less-experienced developers through code reviews, te