Renaissance Technologies

Backend Engineer (Node.js API) Company: Renaissance Technologies Location: Remote / Hybrid Experience: 1–2 Years Website: About Renaissance Technologies At Renaissance Technologies, we don't just build software—we architect digital futures that transform businesses and revolutionize industries. With a 98% client satisfaction rate, 150+ projects delivered, and clients across 15+ industries, we build mission-critical systems that scale from 100 to 100 million users. The Role We are looking for a Backend Engineer whose primary responsibility will be designing, developing, and maintaining enterprise-grade APIs using Node.js. You'll build the backbone of our client platforms, powering web applications, mobile apps, and third-party integrations. What You'll Do Design, develop, and maintain high-performance RESTful APIs using Node.js and Express (or similar frameworks) Implement API authentication, authorization, versioning, error handling, and consistent response structures Write efficient database queries and manage schemas in PostgreSQL Integrate with third-party APIs and external services, handling webhooks, OAuth flows, and rate limiting Document APIs thoroughly for seamless consumption by frontend and mobile teams Participate in code reviews and maintain high standards of code quality, security, and performance Required Qualifications 1–2 years of professional experience in backend development with Node.js Strong proficiency in building RESTful APIs with proper structure, versioning, and documentation Hands-on experience with PostgreSQL, including schema design and query optimization Demonstrated experience integrating with third-party APIs and external services Understanding of API security practices (JWT, OAuth, rate limiting, input validation) Familiarity with Git and collaborative development workflows Nice to Have Experience with Kubernetes and containerized deployments Familiarity with Knative or serverless function architectures Hands-on experience with CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins) Exposure to microservices architecture and cloud platforms (AWS, GCP, Azure) Why Join Renaissance? Work on APIs powering platforms that handle millions of users and significant transaction volumes Collaborate with an elite talent pool who have shipped products used by millions Contribute to impactful projects across healthcare, fintech, automotive, and e-commerce Enjoy transparent communication, continuous learning, and a culture of innovation Job Types: Full-time, Permanent Pay: ₹14,775.35 - ₹35,000.00 per month Benefits: Paid sick time Work from home Work Location: In person