Senior Backend Engineer | Multiplayer Game Infrastructure
About the role
THE MISSION
Build the backend that powers thousands of concurrent battles in our next-generation competitive FPS. This isn't web development with game features - this is architecting the real-time infrastructure that hardcore players demand: sub-50ms response times, bulletproof persistence, and flawless matchmaking for a title that will compete with CS2 and Valorant.
WHY THIS ROLE MATTERS
You won't be building CRUD APIs. You'll own the entire competitive integrity of our game:
- Player Trust: Your persistence layer holds millions in virtual items
- Match Fairness: Your matchmaking determines every player's experience
- Live Operations: Your systems handle 10,000 concurrent matches without breaking a sweat
YOUR TECHNICAL BATTLEFIELD
Mission-Critical Systems You'll Own:
- Stateful Game Services: Design distributed systems managing real-time game state across thousands of concurrent matches
- High-Performance Matchmaking: Build ELO-based matchmaking supporting 50,000+ concurrent players with <5 second queue times
- Inventory & Economy Backend: Architect transactional systems managing player inventories worth real money
- Anti-Cheat Integration: Implement server-authoritative validation and integrate with BattlEye/EAC
- LiveOps Infrastructure: Build hot-patching systems for zero-downtime updates during peak hours
Your Arsenal:
- Game-Specific: PlayFab/Pragma/AccelByte or custom equivalents
- Infrastructure: Kubernetes orchestrating 1000+ pods, AWS GameLift/Agones
- Performance: Redis for session state, PostgreSQL for persistence, 100K+ ops/second
- Protocols: WebSockets, gRPC for service mesh, UDP for game traffic
- Monitoring: Real-time observability handling 1M+ events/minute
REQUIRED EXPERTISE
Non-Negotiable Technical Skills:
- 7+ years shipping multiplayer game backends (not web apps that happen to be games)
- Proven scaling experience: You've handled 50K+ CCU in production
- Battle-tested with: PlayFab, Pragma, AccelByte, or built similar from scratch
- Deep knowledge: Kubernetes at scale, AWS game services, NodeJS performance optimization
- Game-specific expertise: Tick rates, client prediction, lag compensation, state synchronization
Evidence We Need:
- Shipped titles you can point to on Steam/Epic/Console
- War stories about scaling failures and how you fixed them
- Specific metrics: CCU handled, latency achieved, uptime maintained
- Your approach to common problems: inventory duplication, match state corruption, DDOS mitigation
BONUS MULTIPLIERS
- Direct Unreal Engine 5 replication system experience
- Contributions to GDC talks or technical game blogs
- Experience with competitive game ranking systems (ELO, TrueSkill)
- Background in anti-cheat or game security
THE GAME YOU'LL POWER
We're building the competitive FPS that PC players have been waiting for. Think CS:GO's competitive integrity meets modern gameplay. Your backend will be the difference between "another shooter" and "the next decade's esport."
READY TO SHIP?
Send your resume and include:
-
Your most impressive multiplayer backend scaling achievement
-
The largest CCU you've personally supported in production
-
Your GitHub or technical blog (if available)
About Ironbelly Studios
Ironbelly Studios is comprised of a talented, passionate and dedicated number of game developers from all corners of the globe. Our focus is on creating high quality entertainment experiences as well as providing outsourcing services at a fraction of the cost seen elsewhere.
Senior Backend Engineer | Multiplayer Game Infrastructure
About the role
THE MISSION
Build the backend that powers thousands of concurrent battles in our next-generation competitive FPS. This isn't web development with game features - this is architecting the real-time infrastructure that hardcore players demand: sub-50ms response times, bulletproof persistence, and flawless matchmaking for a title that will compete with CS2 and Valorant.
WHY THIS ROLE MATTERS
You won't be building CRUD APIs. You'll own the entire competitive integrity of our game:
- Player Trust: Your persistence layer holds millions in virtual items
- Match Fairness: Your matchmaking determines every player's experience
- Live Operations: Your systems handle 10,000 concurrent matches without breaking a sweat
YOUR TECHNICAL BATTLEFIELD
Mission-Critical Systems You'll Own:
- Stateful Game Services: Design distributed systems managing real-time game state across thousands of concurrent matches
- High-Performance Matchmaking: Build ELO-based matchmaking supporting 50,000+ concurrent players with <5 second queue times
- Inventory & Economy Backend: Architect transactional systems managing player inventories worth real money
- Anti-Cheat Integration: Implement server-authoritative validation and integrate with BattlEye/EAC
- LiveOps Infrastructure: Build hot-patching systems for zero-downtime updates during peak hours
Your Arsenal:
- Game-Specific: PlayFab/Pragma/AccelByte or custom equivalents
- Infrastructure: Kubernetes orchestrating 1000+ pods, AWS GameLift/Agones
- Performance: Redis for session state, PostgreSQL for persistence, 100K+ ops/second
- Protocols: WebSockets, gRPC for service mesh, UDP for game traffic
- Monitoring: Real-time observability handling 1M+ events/minute
REQUIRED EXPERTISE
Non-Negotiable Technical Skills:
- 7+ years shipping multiplayer game backends (not web apps that happen to be games)
- Proven scaling experience: You've handled 50K+ CCU in production
- Battle-tested with: PlayFab, Pragma, AccelByte, or built similar from scratch
- Deep knowledge: Kubernetes at scale, AWS game services, NodeJS performance optimization
- Game-specific expertise: Tick rates, client prediction, lag compensation, state synchronization
Evidence We Need:
- Shipped titles you can point to on Steam/Epic/Console
- War stories about scaling failures and how you fixed them
- Specific metrics: CCU handled, latency achieved, uptime maintained
- Your approach to common problems: inventory duplication, match state corruption, DDOS mitigation
BONUS MULTIPLIERS
- Direct Unreal Engine 5 replication system experience
- Contributions to GDC talks or technical game blogs
- Experience with competitive game ranking systems (ELO, TrueSkill)
- Background in anti-cheat or game security
THE GAME YOU'LL POWER
We're building the competitive FPS that PC players have been waiting for. Think CS:GO's competitive integrity meets modern gameplay. Your backend will be the difference between "another shooter" and "the next decade's esport."
READY TO SHIP?
Send your resume and include:
-
Your most impressive multiplayer backend scaling achievement
-
The largest CCU you've personally supported in production
-
Your GitHub or technical blog (if available)
About Ironbelly Studios
Ironbelly Studios is comprised of a talented, passionate and dedicated number of game developers from all corners of the globe. Our focus is on creating high quality entertainment experiences as well as providing outsourcing services at a fraction of the cost seen elsewhere.