• Own and drive backend architecture, design, and implementation for critical product features. • Translate high-level product goals into iterative, production-ready deliverables and scale them into robust systems. • Build secure, reliable, and fault-tolerant backend services using Node.js and NestJS, following clean code and best practices. • Design high-performance RESTful APIs and gRPC services, optimised for low latency and scalability. • Contribute to system design discussions, perform deep technical analysis, and propose optimal solutions. • Mentor developers (scope increases with seniority), participate in code reviews, and improve engineering quality standards. • Work closely with cross-functional teams to improve processes and share best practices. • Continuously evaluate and integrate new tools, frameworks, and technologies that enhance the product and developer productivity. • Take ownership of end-to-end delivery and ensure high-quality outcomes.