Full Stack Developer - Senior

About the RoleSwitchKart 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 ForMust 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 skillsGood 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 environmentWhy 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.