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MERN Stack Developer

Exosphere Interactive LLPBaddi, Himachal Pradesh, India

30+ days ago

Job description

About the Role

We are seeking a talented MERN Stack Developer to architect and implement the backend infrastructure and APIs for a mobile multiplayer game. The focus will be on building real-time battling systems, matchmaking logic, and leaderboard functionality. You will be responsible for designing, coding, and optimizing APIs that ensure smooth player-versus-player (PvP) experiences, persistent progression tracking, and global ranking systems.

Key Responsibilities

Develop and maintain RESTful and GraphQL APIs for multiplayer gameplay.
Build real-time matchmaking and battle synchronization APIs using Node.js, Express, and Socket.io / WebSockets.
Design and implement leaderboard APIs (global, regional, seasonal, friend-based).
Manage player data persistence in MongoDB, including :
Player profiles, teams, rosters
Match history and battle outcomes
Ranking and progression data
Ensure low-latency communication between clients and server during battles.
Create secure authentication and authorization APIs (JWT / OAuth2).
Implement reward APIs tied to battle outcomes and leaderboard positions.
Develop admin APIs for monitoring, analytics, and game balancing.
Write detailed API documentation for mobile team integration.
Monitor, scale, and optimize backend systems for high concurrent player loads.

Required Skills & Qualifications

Strong knowledge of JavaScript / TypeScript.

Hands-on expertise in MERN stack (MongoDB, Express, React / React Native, Node.js).

Proven experience with Socket.io / WebSockets for real-time communication.

Experience in designing scalable RESTful / GraphQL APIs.

Understanding of game mechanics and multiplayer server architecture.

Proficiency in MongoDB schema design and performance optimization.

Strong grasp of security practices (rate limiting, API throttling, data validation, encryption).

Familiarity with load balancing and cloud deployment (AWS, GCP, or Azure).

Preferred (Nice to Have)

Experience with Elo / MMR ranking algorithms or custom matchmaking logic.

Familiarity with microservices architecture and Docker / Kubernetes.

Knowledge of reward systems, battle pass integrations, and seasonal events.

Prior work on real-time multiplayer mobile games.

Here’s a comprehensive list of APIs the developer would be expected to build for such a game

1. Authentication & Player Profile APIs

2. Matchmaking APIs

3. Battle APIs

4. Leaderboard APIs

5. Ranking & Progression APIs

6. Rewards & Economy APIs

7. Admin & Analytics APIs

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Mern Stack Developer • Baddi, Himachal Pradesh, India