Junior/Middle Backend Developer (Nodejs)

Job description

• Analyze business requirements from internal teams and clients, then design system architecture, infrastructure, database schema, and choose appropriate technologies.
• Handle common backend logic such as user authentication, CRUD operations, file uploads, caching, pagination, access control, inventory management, purchasing, ensuring data integrity and consistency, etc.
• Optimize system performance.
• Monitor and build basic log collection and alerting pipelines.
• Participate in code reviews, technical discussions, and Agile activities (sprint planning, daily standups, retrospectives).
• Opportunity to work with or switch to Python/FastAPI if you have a suitable background.

Your skills and experience

Backend (Mandatory)

• Proficient in Node.js/NestJS: building APIs, database connections, authentication, error handling.
• Ability to structure backend projects in a modular, scalable way.
• Understanding of RESTful API or GraphQL.
• Proficient with Git; experience with CI/CD is a plus.
• Knowledge of SQL/NoSQL databases (PostgreSQL, MongoDB, MySQL).
• Strong understanding of web application security: JWT, CORS, rate limiting, logging & monitoring.
• Experience with Docker/containerization and on-premises deployment is a plus.
• Ability to write unit tests/integration tests to ensure system quality.
• Data processing and performance optimization mindset (caching, queue, event-driven, message brokers like RabbitMQ/Kafka).

Python (Optional)

• Experience or willingness to learn Python, especially FastAPI.
• Preferred if you have built backends or data processing scripts in Python.

Why you'll love working here

• Opportunity to participate in modern projects with a strong focus on performance and user experience.
• Direct learning opportunities from experienced developers and exposure to real-world projects.
• A dynamic, creative, and open working environment that supports both professional skill development and product-oriented thinking.
• Full social insurance, annual performance bonus, and regular salary reviews.
• Flexible working hours, 5 days per week, with the possibility of remote work on certain days.