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1. Backend System Development:

• Responsible for the backend development and maintenance of the company's core business, ensuring system stability and high performance.
• Participate in system architecture optimization to enhance code maintainability and scalability.

2. Database Design and Optimization:

• Responsible for database design and index optimization to improve data query and storage efficiency.
• Participate in the design and implementation of optimization schemes such as database sharding and read-write separation.

3. Big Data Processing (Preferred):

• Responsible for optimizing big data storage, computing, and analysis processes to enhance data processing efficiency.
• Participate in data warehouse and ETL development to optimize large-scale data query performance.

4. Distributed Systems & High Concurrency Optimization:

• Participate in the architecture optimization of distributed systems to improve system throughput and scalability.
• Utilize technologies such as caching (Redis), message queues (Kafka/RabbitMQ) to optimize performance.

1. Basic Requirements:

• Bachelor's degree or higher in Computer Science or a related field, with over 5 years of backend development experience.
• Proficient in at least one mainstream programming language (such as Java, Go, Python, C++, etc.).
• Experience with relational databases (MySQL / PostgreSQL), with a strong grasp of SQL optimization and index optimization.
• Experience with NoSQL databases (Redis / MongoDB / Elasticsearch), focusing on improving storage and query efficiency.

2. Big Data Related Experience:

• Familiar with big data storage and computing (Hadoop / Spark / Flink).
• Proficient in Elasticsearch / ClickHouse for large-scale data querying and analysis.

3. Distributed Systems & High Concurrency:

• Skilled in cache optimization (Redis / Memcached) to enhance data access efficiency.
• Familiar with message queues (Kafka / RabbitMQ) for optimizing asynchronous task processing.
• Understanding of microservices architecture (Spring Cloud / Dubbo / gRPC) to improve system scalability.

4. Performance Optimization Experience:

• Extensive experience in performance optimization, capable of identifying and resolving system bottlenecks.
• Familiar with database optimization (e.g., index optimization, query optimization) and server tuning (e.g., Linux kernel parameter tuning).

5. Cloud Computing & DevOps:

• Familiar with Docker / Kubernetes, with experience in containerized deployment.
• Proficient in CI/CD (Jenkins / GitHub Actions) to enhance deployment automation.

6. Soft Skills:

• Possess good communication skills and teamwork spirit.
• Strong learning ability and problem-solving skills.
• Technically driven with a willingness to share and promote technological innovation.

Preferred Qualifications:

• Experience in big data development (e.g., Hadoop / Spark / Flink / ClickHouse).
• Experience in high concurrency system development (QPS 100,000+).
• SaaS product development experience, familiar with multi-tenant architecture.
• Experience contributing to open source projects / sharing technical blogs.