Multiplayer & Online Services Engineer – Studio Sirens

Multiplayer & Online Services Engineer Studio Sirens

About Studio SirensFounded in 2024 under Snail Games Studio Sirens is a development team focused on prototyping innovative gameplay systems crafting bold new IP and co-development projects. Blending technical precision with narrative ambition the studio brings immersive worlds to life through a gameplay-first approach supporting major releases while forging its own creative path within the Snail Games portfolio.

About the RoleWe are seeking an engineer who builds the online features that enable multiplayer games. You will work across C and Blueprints in Unreal Engine and C# for backend services to implement systems for matchmaking session flows player data and the logic that drives dynamic dedicated server instances.

This role focuses on game-facing online systems not on managing infrastructure or DevOps. You will implement multiplayer systems integrate them into Unreal and ensure smooth reliable communication between clients servers and the backend services that support gameplay.

This role may support multiple Studio Sirens projects as needed contributing online systems expertise across titles in active development.

Job Type: Full-TimeLocation: Hybrid in Loveland Colorado (preferred 4 days/week onsite).

Responsibilities

• Implement multiplayer features and client-server logic in C and Blueprints within Unreal Engine.

• Build backend services in C# to support matchmaking sessions authentication and player data.

• Develop REST and gRPC/Protobuf endpoints for communication between services and clients.

• Implement logic for dynamic dedicated server instancing including session allocation and region selection.

• Integrate backend features into Unreal Engine gameplay systems and dedicated server flows.

• Store and retrieve player data using NoSQL databases such as MongoDB or Redis.

• Ensure data integrity efficient access patterns and secure handling of user data.

• Debug profile and resolve complex issues across the full multiplayer path client dedicated server backend services and data stores.

• Collaborate with design engineering QA and other disciplines to maintain smooth online feature integration.

• Proactively identify opportunities to improve stability resilience and overall online player experience.

Minimum Requirements

• Bachelors degree in Computer Science or a related field.

• Strong CS fundamentals: data structures algorithms concurrency memory management.

• 4 years of experience building multiplayer games or connected online systems.

• Strong proficiency in C Blueprints and C#.

• Handson experience with Unreal Engine 4 or 5 including clientserver communication.

• Solid understanding of multiplayer networking fundamentals (clientserver models replication matchmaking latency mitigation).

• Experience integrating backend services with game clients and dedicated servers.

• Familiarity with REST APIs and at least one RPC/serialization format (JSON gRPC Protobuf).

• Experience with NoSQL databases such as MongoDB or Redis.

• Ability to debug issues across distributed systems and network boundaries.

• Comfortable collaborating with distributed teams and communicating clearly across disciplines.

Nice to Have

• Experience shipping games built with Unreal Engine.

• Background working on gamesasaservice and live operations.

• Experience managing dynamically spawned Unreal Engine dedicated server instances.

• Familiarity with matchmaking algorithms or sessionbased multiplayer games.

• Exposure to cloudhosted game server fleets (AWS GCP Azure).

• Experience with multiplayer load testing or traffic simulation.

• Knowledge of authentication systems (OAuth JWT platform identity providers).

• Familiarity with telemetry analytics or observability for online features.

Salary Range: $125000 $155000 Annually

Why Join the Studio Sirens Team

• True focus on work/life balance

• Paid company holidays vacation and separate sick leave

• Medical dental vision and Life/LTD

• 401k with company match

Work Authorization

Applicants must be legally authorized to work in the United States at the time of application. This position does not offer visa sponsorship now or in the future (including H-1B).

Additional Information

As part of the Companys activities in video game development publishing and short-form video content creation certain projects discussions or creative materials may include themes visuals language or subject matter that some individuals could find mature violent sexual graphic or otherwise sensitive in nature (collectively referred to as Mature Content). Examples may include but are not limited to depictions or descriptions of combat violence adult themes or relationships suggestive or satirical humor or strong language. Employees are expected to engage with such material in a professional and creative context as part of their job duties.