Senior UE5 Game UI Engineer | Multiplayer FPS

The Opportunity

Ironbelly Studios is a team of 20 gaming veterans whove contributed to franchises including Call of Duty Halo Bioshock PUBG and Batman across 300 projects. Now were building our own competitive multiplayer FPS in Unreal Engine 5new system architecture from the ground up not maintenance work.

The Mission

Youll architect performance-critical UI systems for a competitive multiplayer FPS where every millisecond matters:

• Build server-authoritative HUDs with client-side prediction for responsive combat feedback
• Craft instant-feeling inventory and loadout systems that handle rapid player decisions
• Connect interfaces with complex gameplay systems including weapon mechanics AI state and player progression
• Support real-time combat data visualization spectator modes and rapid iteration cycles

The Mission

Youll architect performance-critical UI systems for a competitive multiplayer FPS where every millisecond matters. This means building server-authoritative HUDs with client prediction crafting instant-feeling inventory and loadout systems and seamlessly connecting interfaces with complex gameplay systems including weapon mechanics AI state machines and player progression.

Your code will handle real-time combat data spectator modes and the rapid iteration cycles that competitive gaming demands.

Core Requirements

• 3 years game UI programming experience
• Unreal Engine UI implementation (UMG Slate or equivalent game UI frameworks)
• C proficiency with hands-on UI system work
• Blueprint/visual scripting experience
• 1 shipped game (commercial indie or substantial mod)

Ideal Experience

• Multiplayer FPS or competitive game UI work
• UE5s UMG system depth
• UI performance optimization targeting 60 FPS
• Real-time data synchronization patterns
• Platform certification experience

Why Ironbelly Studios

The Challenge: Architect UI for a competitive shooter demanding frame-perfect responsiveness while handling complex real-time multiplayer systems.

The Team: Work alongside 20 senior developers who have collectively contributed to over 300 projectsfrom Batman and PUBG to indie titles. Our partners at Neon Machine include BAFTA and Emmy Award-winning veterans from Halo Call of Duty Star Wars and Bioshock.

The Impact: Direct influence on systems experienced by players in high-stakes competitive moments.

Location & Work Model

Montreal Quebec Hybrid (1-3 days/week in office)

Were building a centralized team in one of gamings most vibrant cities. Candidates local to Montreal or willing to relocate are strongly preferred. Fully remote arrangements are possible for exceptional candidates but will be evaluated case-by-case.

Please apply only if you can commit to Montreal-based hybrid work or are genuinely open to relocation.

Ready

If you thrive on performance challenges and want to shape how players experience combat wed love to hear from you.