Full Stack Developer - Senior

About the Role SwitchKart is on a mission to make technology more accessible and more sustainable — we're in the business of recommerce, giving old smartphones a second life, cutting down e-waste, and extending the lifecycle of every device we touch. We're looking for a Senior Full Stack Developer to help us build and scale the ecosystem of platforms powering this mission — from our procurement app to our retailer app, pricing engines, and warranty systems. You'll take ownership of complex features end-to-end, mentor junior engineers, and make architectural decisions that shape how we grow. What You'll Do • Own Features End-to-End: Design, build, and ship full stack features across our procurement, retailer, pricing, and warranty platforms — from database schema to UI polish. • Drive Architecture: Make key technical decisions on system design, scalability, and code structure as our ecosystem of apps grows. • Build AI-First: Design and build systems with AI at the core — not bolted on. Think about where AI can automate, assist, or enhance the products you're building from day one. • Build Scalable Architecture: Build and monitor a highly performant, failure-resistant platform — we take pride in doing this with a small, high-ownership team. • Automate and Integrate: Develop tools that automate our integration processes and build data pipelines across our app ecosystem. • Foster Technical Excellence: Champion unit and integration testing and lead meaningful code reviews across the team. • Prototype and Validate: Create interactive prototypes to prove out technical concepts and participate in pilots for new initiatives. • Mentor the Team: Guide junior developers through code reviews, pairing, and technical direction. • Report Upward: Provide regular updates to management on milestones, risks, issues, and mitigation plans. • Collaborate Cross-Functionally: Work closely with product and design to translate requirements into robust technical solutions across multiple products. What We're Looking For Must Have • 4+ years of full stack development experience • Strong proficiency in React and Node.js • Solid experience with PostgreSQL or MySQL — schema design, query optimisation • Experience designing and scaling production systems • Experience deploying and managing applications on a cloud platform (AWS/GCP or similar) • Comfortable owning a feature from concept to deployment • Strong debugging and problem-solving skills Good to Have • Experience mentoring or leading junior engineers • Track record of driving scalability and time-to-market in past cloud architecture decisions • Exposure to CI/CD pipelines • Experience with Docker, NoSQL databases, or distributed caching • Experience integrating third-party REST/SOAP APIs • Experience in a fast-moving startup environment Why SwitchKart • Real ownership over architecture and technical direction. • Access to the latest AI coding agents and tools — we invest in keeping our engineers on the cutting edge. • Work on a genuinely differentiated business with measurable impact. • Be part of a lean team where your decisions shape the product. • Opportunity to mentor and grow the engineering team. Skills:- React Native, React.js, NodeJS (Node.js), NextJs (Next.js), PostgreSQL, Amazon Web Services (AWS) and RESTful APIs