Backend Developer

Business UnitWeiXin Group(WXG) is responsible for the construction and operation of the Weixin ecosystem and leveraging Weixin's open platforms such as Official Accounts, Mini Programs, Weixin Pay, WeCom and search function. WXG provides solutions and connectivity for intelligent upgrades across all industries. WXG is also responsible for the development and operation of QQ Mail, WeRead and other products.

What the Role Entails

About Tencent
Tencent is an Internet-based platform company founded in Shenzhen, China, in 1998. We use technology to enrich the lives of Internet users and assist the digital upgrade of enterprises. Our mission is "Value for Users, Tech for Good". We embrace a culture of teamwork & creativity and are driven by our values - Integrity, Proactivity, Collaboration and Creativity.
We are rapidly expanding our international operations and are looking for top talent to propel us forward. Combining the results-oriented nature of a startup with the resources of a profitable and leading Internet company, Tencent offers a unique opportunity for aspiring individuals to thrive.
About WeChat
With over 1.3 billion users worldwide, WeChat is changing the mobile landscape by connecting people, services, and businesses in China and around the world. The WeChat team in Singapore is responsible for managing and growing our core product including messaging and social networking for users worldwide (excluding the Chinese mainland).
Join the WeChat team and play an impactful role in keeping people around the world connected, help redefine how people use their mobile devices to communicate and interact online, and to better understand user behavior and preferences of users around the world.

Job Responsibilities:

• Responsible for maintaining and ensuring the stability and performance of WeChat's backend services (including massive data storage and message queue systems for friends, videos, etc.), while supporting the business group with distributed storage frameworks and related team components ensuring smooth user and internal interactions with backend systems.
• Participate in the design and optimization of WeChat's distributed storage solutions, addressing key challenges in scalability, high availability, and disaster recovery.
• Ensure that storage systems operate with low latency and high reliability, implementing best practices using distributed consensus protocols like Paxos/Raft, and performing root cause analysis for system faults.
• Focus on the architecture and optimization of backend storage services, ensuring seamless integration of storage engines (e.g., LevelDB) into the backend infrastructure, managing performance, and providing detailed insight into key metrics.

Who We Look For

Job Requirements:

• Strong technical foundation with a proven record of troubleshooting, problem analysis, and collaborative problem-solving skills; a proactive and accountable work ethic, with a willingness to share knowledge.
• Proficient in system administration (Linux) and experience with scripting languages for automating infrastructure tasks (e.g., Python, Shell scripting).
• Proficient in daily operations and management of common KV storage systems, designing and implementing high-availability and high-performance KV storage solutions, conducting system performance tuning and capacity planning, with the ability to troubleshoot issues and optimize performance.
• Experience with distributed consensus algorithms like Paxos or Raft, and detailed knowledge of storage engines (e.g., LevelDB), and database systems in large-scale environments.
• Strong SQL tuning skills and experience working with high-performance database optimization.

Equal Employment Opportunity at Tencent

As an equal opportunity employer, we firmly believe that diverse voices fuel our innovation and allow us to better serve our users and the community. We foster an environment where every employee of Tencent feels supported and inspired to achieve individual and common goals.