Sr. MERN Stack Developer

Senior Software Engineer — JavaScript Full-StackExperience: 4–6 years Location: Ahmedabad (Work from Office)About the RoleWe're hiring a senior engineer who can own systems end-to-end on live, production JavaScript/TypeScript applications. You'll work across React frontends, Node backends, and the databases behind them — you don't need to be the deepest expert in every layer, but you should be strong across the stack and able to make architectural calls that hold up.This role involves real client interaction, technical decision-making, and shipping into production — not just executing tickets. You'll also be someone the mid-level and junior engineers learn from.What You'll DoDesign, build, and maintain scalable full-stack applications running in productionOwn technical decisions on architecture, data modeling, deployments, and performance trade-offsDebug live issues across the stack, identify bottlenecks, and improve performanceParticipate in client conversations: scoping, technical discussions, demos, and updatesReview code and raise the team's bar — including the judgment to catch when AI-generated code is subtly wrong, overengineered, or a poor fitMentor junior and mid-level engineers and contribute to team engineering standardsContinuously evaluate and adopt tools and practices that improve deliveryWork in an Agile / Scrum setup with regular delivery cyclesMust-Have4–6 years building and shipping production JavaScript/TypeScript applicationsStrong full-stack ability — genuinely comfortable owning both React frontends and Node backends; can architect a feature from UI to data layerDeep JavaScript and TypeScript — language fundamentals, async patterns, typing discipline, and the ability to teach these to less experienced engineersStrong React — advanced hooks, state management, performance optimization, component architecture, and structuring large appsStrong Node backend — REST (and ideally some GraphQL or real-time) APIs, auth, error handling, and integrating third-party services; experience with Express, Nest, or similarSolid SQL and NoSQL — data modeling across relational and document paradigms; able to pick the right store for the problem and design schemas that hold up under load and change (PostgreSQL, MySQL, MongoDB, or similar)Hands-on AWS — deploying and operating applications, comfortable picking up new services, and debugging issues in production cloud environmentsSystem design fundamentals — caching (Redis/Memcache), queues, REST/API design, and an understanding of scaling and reliability trade-offsTrack record on live production systems — operating, supporting, and evolving systems, not only greenfield builds or POCsGit workflows in a team — branching, reviews, conflict resolutionDay-to-day use of AI coding tools (Cursor, GitHub Copilot, Claude Code, or similar) and a point of view on where they help vs. hurtStrong communication — can explain technical decisions to clients and non-technical stakeholdersIndependence — breaks down ambiguous problems, designs solutions, and ships without hand-holdingStrong Plus (one or more)Architecture & ScaleMicroservices, API gateways, event-driven patternsCaching strategies, queue-based processing, eventual consistencyReal-time systems (WebSockets, SSE)Frontend DepthNext.js (SSR/SSG), advanced performance work, design systemsAccessibility and cross-platform/responsive expertiseReact NativeDevOps / PlatformCI/CD pipelines, Docker, infrastructure-as-codeObservability and production monitoringAI EngineeringLLM-powered features: RAG, agentic workflows, tool useVector databases (Pinecone, Weaviate, Qdrant, pgvector)Prompt engineering, evals, and observability for LLM appsNice to HaveAutomated testing depth (unit, integration, e2e)Security fundamentals: auth flows, secrets management, OWASP basics