Senior C++ Developer

Senior C++ Developer for automated multiplayer playtesting with AI bots, fully remote within Poland, B2B contract.

We are seeking an experienced Senior C++ Developer to join our Quality Verification team, focused on enhancing automated multiplayer playtesting through innovative AI bot systems. Responsibilities: • Design, implement, and maintain AI bot systems for automated multiplayer playtesting • Develop bot behavior systems including movement, combat, interaction, and coordination • Collaborate with designers and QA engineers to translate gameplay scenarios into testable bot behaviors • Build telemetry pipelines for analysis, regression testing, and behavior validation • Investigate bot failures such as pathfinding, network desynchronization, and gameplay interaction issues • Modernize architecture and improve maintainability • Participate in exploratory machine-learning-driven bot behavior research • Review code and contribute to engineering best practices

Required Skills: • 5+ years of software engineering experience • Strong C++ proficiency • Experience with AI behavior systems such as finite state machines or behavior trees • Proven ability to improve maintainability in complex codebases Nice to Have: • Experience in multiplayer game development • Knowledge of performance optimization techniques • Understanding of debugging and profiling tools • Experience with automated testing infrastructure is a significant plus • Familiarity with Frostbite, Unreal, or Unity is an asset • Exposure to reinforcement learning concepts is a bonus

What we offer: • Work mode - fully remote • Assignment type: B2B contract • Contract length: 10-12 months + extensions • Workload: Full time