Arjun M B
Full Stack Developer (MERN Stack)
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About
Results-driven Full Stack Developer (MERN Stack) with hands-on experience building production-grade, multi-tenant SaaS applications end-to-end. Proficient in React.js (TypeScript), Node.js, Express.js, PostgreSQL, and MongoDB, with a proven track record of delivering measurable impact — including a 40% improvement in database performance through advanced query optimization and a 25% reduction in server response time via Redis caching. Skilled in real-time systems (Socket.io, WebRTC), cloud deployment (AWS S3 & EC2), Docker containerization, automated CI/CD pipelines, AI/LLM integration, and Agile/Scrum methodologies.
Committed to writing clean, scalable, and maintainable code following SOLID principles and Clean Architecture patterns.
Experience
Full-Stack Developer (Self-directed Projects) at Brototype (2024-08 – Present)
Independently designed and built end-to-end client-side and server-side architecture for a multi-tenant SaaS platform (MedixFlow) — self-directed from system design through to production deployment.
- Built responsive, pixel-perfect UIs independently using React.js (v19), Tailwind CSS, and Bootstrap — translating self-designed wireframes into cross-browser-compatible, mobile-friendly interfaces.
- Independently architected and optimized PostgreSQL schemas with Prisma ORM and MongoDB with Mongoose; applied query optimization techniques — achieving a 40% improvement in database performance.
- Implemented Redis caching for session management and high-frequency data lookups, and BullMQ for asynchronous job processing (email queues, reminders) — reducing server response time by 25%.
- Developed scalable RESTful APIs using Node.js and Express.js; independently integrated AI/LLM-powered features, third-party payment gateways (Razorpay, PayPal, Stripe), and real-time systems via Socket.io and WebRTC.
- Self-managed containerization with Docker and cloud deployment on AWS (S3, EC2) via Linux CLI; set up automated CI/CD pipelines with GitHub Actions for consistent, zero-downtime releases.
- Wrote unit and integration tests with Jest; maintained clean, testable TypeScript/JavaScript codebases adhering to SOLID principles, Clean Architecture, and Domain-Driven Design (DDD).
Education
Bachelor of Technology (B.Tech) in Instrumentation and Control Engineering – S.N.M Institute of Management and Technology (2016 – 2020)
