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Published 29/10/2025

Job Description

As a Senior Backend Developer, you'll architect and maintain high-performance server-side systems that power our games' core logic, multiplayer interactions, and player data management. You'll collaborate with game designers, frontend engineers, and DevOps to deliver seamless, scalable experiences under high-load conditions. This role is ideal for a passionate developer who thrives on solving complex scalability challenges in the fast-paced gaming industry, with opportunities to influence tech decisions and mentor junior team members.

Key Responsibilities

  • Design, develop, and optimize scalable backend services using Node.js/TypeScript or C#/.NET, including RESTful APIs, WebSockets for real-time communication, and microservices architectures.
  • Implement and maintain database solutions (e.g., MongoDB, PostgreSQL, Redis) for efficient data storage, player progression tracking, matchmaking, and analytics, ensuring high availability and low latency.
  • Integrate with game engines like Unity or Unreal for server-authoritative logic, anti-cheat systems, and live operations features such as events and leaderboards.
  • Collaborate with cross-functional teams to align backend capabilities with game design goals, including prototyping new features and conducting code reviews for quality and security.
  • Monitor and enhance system performance, using tools like Docker, Kubernetes, and cloud platforms (AWS, Azure, or GCP) to handle peak traffic and ensure 99.9% uptime.
  • Contribute to R&D for emerging technologies, such as blockchain/NFT integrations or AI-driven personalization, while maintaining robust testing, CI/CD pipelines, and documentation.
  • Mentor junior developers, foster knowledge sharing, and drive agile processes to deliver iterative improvements and bug fixes in a live-service environment.

Key Requirements

  • 5+ years of professional backend development experience, with at least 2 years in the gaming, esports, or high-traffic entertainment industry.
  • Proficiency in backend languages and frameworks such as Node.js (with Express/NestJS), C#/.NET, Ruby, or Python; strong experience with asynchronous programming and event-driven architectures.
  • Hands-on expertise with databases (SQL/NoSQL like PostgreSQL, MongoDB, MySQL) and caching systems (e.g., Redis), including query optimization and schema design for large-scale data.
  • Familiarity with cloud infrastructure, containerization (Docker/Kubernetes), and DevOps practices (CI/CD, monitoring with tools like Prometheus or New Relic).
  • Proven track record of building secure, scalable systems handling real-time data, such as multiplayer sessions, transactions, or user authentication (OAuth/JWT).
  • Excellent problem-solving skills, with the ability to debug complex issues in distributed systems and optimize for performance under high concurrency.
  • Strong communication skills and a collaborative mindset; experience working in agile teams with tools like Git, Jira, or Confluence.
  • Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).

Preferred Qualifications

  • Experience with game-specific technologies, such as server-side integration with Unity/Unreal, Steam/PSN APIs, or matchmaking algorithms.
  • Knowledge of blockchain (e.g., Ethereum smart contracts) or machine learning for player analytics.
  • Contributions to open-source projects or a personal portfolio of shipped games/live services.
  • Familiarity with observability tools, message queues (RabbitMQ/Kafka), or edge computing (e.g., Cloudflare Workers).

Skills

Node.js (with Express/NestJS)
C#/.NET
Ruby
Python

Benefits

  • Compulsory insurance
  • Annual leave & public holiday
  • Fully remote

Career

Company Info

freeC
Ho Chi Minh
101-300 employees

About

freeC is the Smart Recruiting Platform that leverages matching technology to actively connect hundred of thousand of employers and job seekers. The success of freeC is determined by our success in operating as a unified team. If you're interesting, ambitious, and eager to advance your career with us, explore our vacancies as below. We're excited to have you on board our ship to help us grow fast, deliver on our mission of actively connecting employers and job seekers around Vietnam

Working Address

Lầu 06, Tòa nhà BCONS TOWER II , Số 42/1, Đường Ung Văn Khiêm, Phường 25, Quận Bình Thạnh, TP. HCMView map