Multiplayer & Online Services Engineer – Studio Sirens

Snail Games USA•Loveland, CO

4h•$125,000 - $155,000•Hybrid

About The Position

Founded 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. We 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.

Requirements

Bachelor’s 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#.
Hands‑on experience with Unreal Engine 4 or 5, including client–server communication.
Solid understanding of multiplayer networking fundamentals (client‑server 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 Haves

Experience shipping games built with Unreal Engine.
Background working on games‑as‑a‑service and live operations.
Experience managing dynamically spawned Unreal Engine dedicated server instances.
Familiarity with matchmaking algorithms or session‑based multiplayer games.
Exposure to cloud‑hosted 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.

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.