Senior Gameplay Networking Engineer / シニアゲームプレイネットワークエンジニア

The Opportunity KOMODO is seeking a Senior Networking Engineer based in Tokyo to join the team working on Nanos, a competitive PvP action game currently in early prototyping. In this role, you will lead the design, implementation, and maintenance of the game’s networking architecture. You will ensure that multiplayer systems are responsive, stable, and optimized for fast-paced online PvP gameplay. This includes handling client-server replication, matchmaking, lag compensation, prediction systems, and networking performance optimization. You will work closely with gameplay engineers and designers to align networking systems with gameplay mechanics and deliver a smooth, high-quality online experience. As a senior member of the team, you will provide technical leadership, define networking standards, and mentor other engineers to help grow the team’s capabilities. A successful candidate combines deep experience in multiplayer networking with strong Unreal Engine skills, a practical understanding of latency and replication challenges, and the ability to translate design requirements into robust online systems. Responsibilities Lead the design, architecture, and implementation of networking systems for a multiplayer PvP game Develop and maintain client-server replication, lag compensation, matchmaking, and prediction systems Collaborate closely with gameplay engineers and designers to align networking with gameplay and mechanics Optimize network performance and troubleshoot latency, synchronization, and stability issues Define networking standards, best practices, and documentation for the engineering team Mentor junior or mid-level engineers and contribute to technical growth of the team Support early production by helping establish scalable multiplayer architecture Requirements Extensive experience in multiplayer networking for games, ideally PvP or online titles Strong proficiency in Unreal Engine networking, including both C++ and Blueprints Deep understanding of client-server architecture, replication, lag compensation, and prediction Proven ability to lead architecture design and implement robust networking solutions Experience optimizing networking for fast-paced action games Strong collaboration and communication skills across disciplines High proficiency in English communication Preferred Qualifications Experience shipping competitive or online multiplayer games Familiarity with cross-platform networking (PC, console, Steam Deck) Knowledge of network security and anti-cheat considerations Experience mentoring engineers and contributing to engineering standards Tools / Tech Stack Unreal Engine (C++, Blueprints) Git or equivalent version control Performance-based ProfitsSharing KOMODO Special Leave ( 5-business day Summer holiday, 7 business Winter holiday, 1-day Birthday holiday, and 1 day Game Launch Day ) Paid leave by Japanese labor laws. Full Social Insurance Coverage (Kanto IT Software Health Insurance Society) Free language learning classes (Japanese, English) Company Events (Office Lunch Parties, Year-end Parties, etc.) Work Visa Support A Steam Deck will be provided to employees for their employment. Free Games and Manga Some benefits will be available after the completion of the probationary period.