Senior MERN Stack Developer

Job Description

Experience : 4+ years Shift : (GMT+05:30) Asia/Kolkata (IST) Must have Skills required: MERN, MERN Stack, Mernstack Experience: 5+ years What Youll Be Doing: Building and scaling backend APIs using Node.js+ Express and a MongoDB database. Developing modern, high performing user interfaces with React.js. Writing clean, testable, and maintainable code across the stack. Collaborating closely with product, design, and growth teams to ship features fast. Optimizing apps for performance, scalability, and security. Owning features end-to-end from design and development to deployment and monitoring. Jumping into DevOps, integrations, bug fixes, or customer support when needed typical startup energy! What Were Looking For: 5+ years of professional experience with the MERN stack (MongoDB, Express, React, Node.js). Solid experience in both MySQL and MongoDB. Strong understanding of advanced SQL concepts like joins, subqueries, indexes, and aggregation functions. Deep knowledge of MongoDB aggregation pipelines, performance optimization, and schema design. Proficientin building RESTful APIs and modular Node.js applications using TypeScript. Strong frontend Skills with React.js, including component architecture, state management, and API integration. Hands-on experience with job queues (e.g., BullMQ/Redis), le processing, or real-time updates is highly valued Solid understanding of scalable system design and database architecture. Experience working in startups or SaaS environments youre comfortable with ambiguity, tight feedback loops, and wearing many hats. A strong sense of ownership you care about what you build and the impact it has. Comfortable writing optimized and secure APIs, and debugging performance bottlenecks. Practical experience with caching, background jobs, API rate limits, pagination, etc. Knows how to deliver fast without compromising on code quality, testing, or best practices. Good communicator who can explain complex ideas clearly to non-technical teammates. Experience with Puppeteer or browser automation is a plus but not required, but helpful for some of our upcoming use cases. Bonus Points: Experience with TypeScript. Familiarity with Redis, Docker. Worked on multi-tenant SaaS, billing systems (e.g. Stripe), or feature flags. Comfortable with automated testing and test-driven development (Jest, Cypress). Previous exposure to analytics, monitoring, or error tracking tools like Sentry or Datadog. Skills MERN, MERN Stack, Mernstack