Node.js Developer

This role fits a Node.js Developer with 3+ years of experience in backend development using Node.js, TypeScript/JavaScript, and frameworks like Express.js or NestJS. Candidates should be skilled in API design, SQL/NoSQL databases (PostgreSQL, MongoDB, Redis), and writing clean, testable code in Agile environments. Familiarity with Docker, Kubernetes, CI/CD, and cloud services is a plus; the position is remote within Poland with strong communication skills in Polish and English required.

1. How do you design and implement scalable backend services using Node.js and TypeScript?
   By structuring code modularly, leveraging frameworks like Express.js or NestJS, applying asynchronous patterns, and optimizing database queries and caching.

2. What is your approach to writing clean, maintainable, and well-tested backend code?
   Use TDD/BDD practices, write modular and readable code, enforce linting and formatting standards, and cover logic with unit and integration tests.

3. How do you design and secure RESTful and GraphQL APIs?
   Follow REST/GraphQL best practices, implement authentication and authorization (e.g., JWT, OAuth), validate inputs, and use rate limiting and logging for security.

4. Describe your experience with SQL and NoSQL databases and data modeling.
   Design normalized schemas for relational databases like PostgreSQL, create flexible document models for MongoDB, and optimize with indexing and caching strategies.

5. How do you optimize Node.js application performance and scalability?
   Profile bottlenecks, use clustering or worker threads, implement efficient database queries, apply caching (Redis), and leverage load balancing.

6. What is your experience working in Agile/Scrum teams?
   Participate in sprint planning, daily standups, retrospectives, collaborate closely with cross-functional teams, and continuously deliver incremental value.

7. How familiar are you with Docker and Kubernetes in deployment workflows?
   Create Docker containers for consistent environments, deploy services to Kubernetes clusters, manage configurations and secrets, and monitor cluster health.

8. How do you collaborate effectively in code reviews and architectural discussions?
   Provide constructive feedback, share knowledge, focus on maintainability and scalability, listen actively, and align on best practices and design patterns.

9. What are some security best practices you follow when building backend systems?
   Sanitize inputs, use HTTPS, store secrets securely, implement proper error handling, and follow principle of least privilege for access controls.

10. How do you handle integration with frontend apps and third-party APIs?
    Design clear and consistent API contracts, handle asynchronous data flows gracefully, implement robust error handling, and ensure proper documentation.

Rite NRG is looking for a Node.js Developer to join their remote team within Poland on a full-time B2B contract. You'll design and build scalable backend services using Node.js, TypeScript, Express/NestJS, and work with databases like PostgreSQL and MongoDB. The role offers flexible hours, private medical care, Multisport card, and workation opportunities. Join a multinational team focused on innovation, growth, and long-term collaboration in a supportive engineering culture.