Senior Backend Engineer - NodeJS
Listed on Renesas Electronics’s official careers site. Posted October 12, 2026. Check that it is still open and apply there.
Apply on Renesas Electronics’s careers site →Job description
We are looking for a talented and self-driven Backend Engineer to join our growing engineering team. You will be responsible for designing, implementing, and maintaining scalable backend services using Node.js, Fastify, and Python. You will work closely with cross-functional teams to build APIs, manage data flow, and ensure reliability and performance of backend systems.
Key Responsibilities
- Design and develop robust RESTful APIs and microservices using Node.js and Fastify
- Write clean, efficient, and scalable code in JavaScript and Python
- Collaborate with frontend developers, QA engineers, and product managers
- Implement automated tests to ensure high code quality
- Optimize backend performance and troubleshoot production issues
- Work with databases (SQL/NoSQL) and messaging systems
- Participate in code reviews and share knowledge with team members
- Contribute to DevOps practices, CI/CD pipelines, and cloud deployments
Qualifications
Required Skills
Strong proficiency in TypeScript, JavaScript (Node.js, Fastify) and Python Experience building APIs, microservices, event-driven or distributed systems Good understanding of REST, HTTP, and WebSockets Familiarity with databases like MongoDB, PostgreSQL, or Redis Working knowledge of Docker, Git, and cloud platforms (e.g. AWS, GCP, Azure) Knowledge of authentication/authorization (OAuth2, JWT) Monitoring tools like Grafana, Prometheus, or ELK Stack
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