Sr. Backend Developer

Role & responsibilities

Backend Development

• Design, implement, and maintain APIs and microservices to support core functionalities such as ingestion, querying, and data processing.
• Develop secure and scalable backend systems that align with the overall system architecture.
• Could you collaborate with the frontend team to ensure seamless integration and performance?

Database Management

• Optimize and manage database schemas and interactions for high performance.
• Work with relational databases like PostgreSQL, NoSQL databases like MongoDB, and search technologies like Elasticsearch.
• Monitor database health, troubleshoot issues, and implement improvements as needed.

Security and Performance

• Implement robust authentication and authorization mechanisms (e.g., RBAC/ABAC).
• Apply encryption and secure data transmission techniques to protect sensitive information.
• Conduct performance tuning and optimization for low-latency and high-throughput systems.

Testing and Maintenance

• Write unit and integration tests, and conduct debugging to ensure reliability.
• Document backend services and workflows to ensure maintainability and scalability.
• Please monitor live systems and address issues as soon as possible.

Required Skill and Experience

Technical Expertise:

• Proficiency in backend development using Node.js, NestJS, and TypeScript.
• Strong experience with relational databases (PostgreSQL) and search technologies (Elasticsearch).
• Knowledge of microservices architecture and RESTful API design.

Security:

• Hands-on experience with secure coding practices, encryption, and authentication frameworks (e.g., OAuth2, JWT).
• Familiarity with implementing role-based and attribute-based access control systems.

Performance Optimization:

• Proven ability to design and optimize systems for high performance and low latency.
• Experience with monitoring and debugging backend services.

Soft Skills:

• Strong problem-solving and analytical skills.
• Excellent collaboration and communication abilities.
• Ability to work independently and as part of a dynamic team.