Senior Unreal Gameplay Engineer | Multiplayer FPS

Join the team who's helped build 300+ games ranging from Call of Duty, Halo, PUBG, and Bioshock You know the difference between client prediction and server reconciliation. You've debugged replication issues at 3 AM. You understand why a 16ms frame budget matters in competitive shooters. We're Ironbelly Studios - 20+ industry veterans building our next multiplayer FPS in Unreal Engine 5. This is new system architecture from the ground up, not maintenance work. ⚡ The Mission Own the core gameplay architecture for a fully-funded competitive shooter targeting the hardcore PC FPS community. You'll architect systems handling thousands of concurrent players while maintaining the sub-16ms responsiveness that competitive players demand. 🎯 You Will Architect Multiplayer Systems • Design server-authoritative architecture with client prediction and lag compensation • Implement advanced ballistics with material penetration and damage modeling • Build AI state machines for combat encounters and world simulation • Own inventory replication and dynamic loot spawn systems Drive Technical Excellence • Optimize for consistent 60+ FPS in intense multiplayer scenarios • Establish Unreal best practices across the engineering team • Balance competitive feel with network performance Scale for Success • Implement persistent player progression and reputation systems • Design session management and skill-based matchmaking • Integrate backend services, databases, and analytics pipelines 🛡️ Must-Haves • 5+ years shipping games with Unreal Engine (UE4/UE5) • Deep C++ expertise in gameplay architecture • Shipped at least 2 commercial games (ideally multiplayer) • Proven experience with weapon systems and combat mechanics • Mastery of multiplayer concepts: replication, RPCs, lag compensation • Backend integration experience 🌟 Bonus Points • Extraction shooter or Battle Royale development • Anti-cheat and competitive integrity systems • Gameplay Ability System (GAS) expertise • Experience scaling to 1000+ concurrent players • Live-service game operations 💡 Why Ironbelly? Proven Track Record: Our team has contributed to 300+ projects from indie to AAA franchises Technical Freedom: Senior engineers drive architectural decisions - no micromanagement Stable & Funded: Fully-funded project with clear roadmap and experienced leadership Remote-First Culture: Work from anywhere in Canada, USA, or South America. Optional collaboration at our Montreal hub for those who want it. Real Benefits: Competitive salary, comprehensive health coverage (dental, vision), generous PTO 📍 Location This is a hybrid role based in Montreal, Quebec. We're building a centralized team in one of gaming's most vibrant cities. Local candidates or those willing to relocate will be prioritized but all are welcome!