06/21/2026 updated
100 % available
Senior Full Stack Engineer | Backend Architecture | Real-Time Systems
Gopalganj, India
Only remote
B.Tech in Computer Science EngineeringAbout me
Full Stack Developer with 4.5+ years of experience building scalable web applications using Node.js, NestJS, React.js, TypeScript, MongoDB, PostgreSQL and AWS. I specialize in REST APIs, backend architecture, SaaS platforms, AI integrations and performance optimization
GitHubPostgreSQLMongoDBMySQLNode.jsS3 BucketBackendAWS ECSNestJS
Backend Development with Node.js and NestJS
Over 5 years of experience building production-grade backend systems using Node.js, NestJS, and Express.js. Expertise in designing RESTful and GraphQL APIs, microservices architectures, and real-time WebSocket platforms serving 10,000+ end users.
Database Design and Optimization
Proficiency in MongoDB, PostgreSQL, and MySQL, including schema design, indexing, query optimization, aggregation pipelines, and geospatial queries. Demonstrated reduction of data retrieval times by up to 50%.
Cloud Infrastructure and DevOps
Hands-on experience with AWS (EC2, S3, IAM), Docker, PM2, Nginx, Linux, and CI/CD pipelines. Deployment and management of scalable backend services in cloud environments.
Frontend Development with React.js
Solid skills in React.js, Redux, HTML5, CSS3, and responsive UI design. Delivered full-stack modules and re-architected customer-facing pages with lazy loading and API batching, improving page load by 30%.
RBAC and Security Architecture
Design and implementation of role-based access control (RBAC) systems controlling access across multiple user roles. Experience with JWT-based authentication, session expiry, audit logging, and HIPAA-aligned field-level encryption.
Real-Time Systems with WebSockets
Engineering of real-time platforms using Socket.io and WebSockets, including high-concurrency event loops stable under 500+ concurrent live sessions and sub-second event propagation.
System Design and Scalable API Architecture
Experience in scalable API design, system design, performance tuning, and modular service-layer architecture. Reduced API latency by 35% and deployment errors by 40% across banking and healthcare products.
Agile Development and Team Leadership
Led a 5-person development team as backend lead, conducting bi-weekly code reviews, mentoring junior developers, and owning production incident response with average resolution under 45 minutes.
Tools and Development Practices
Proficient with Git, Postman, Agile/Scrum methodologies, code review processes, and production incident handling. Consistently delivered sprint goals on time across multiple release cycles.
Over 5 years of experience building production-grade backend systems using Node.js, NestJS, and Express.js. Expertise in designing RESTful and GraphQL APIs, microservices architectures, and real-time WebSocket platforms serving 10,000+ end users.
Database Design and Optimization
Proficiency in MongoDB, PostgreSQL, and MySQL, including schema design, indexing, query optimization, aggregation pipelines, and geospatial queries. Demonstrated reduction of data retrieval times by up to 50%.
Cloud Infrastructure and DevOps
Hands-on experience with AWS (EC2, S3, IAM), Docker, PM2, Nginx, Linux, and CI/CD pipelines. Deployment and management of scalable backend services in cloud environments.
Frontend Development with React.js
Solid skills in React.js, Redux, HTML5, CSS3, and responsive UI design. Delivered full-stack modules and re-architected customer-facing pages with lazy loading and API batching, improving page load by 30%.
RBAC and Security Architecture
Design and implementation of role-based access control (RBAC) systems controlling access across multiple user roles. Experience with JWT-based authentication, session expiry, audit logging, and HIPAA-aligned field-level encryption.
Real-Time Systems with WebSockets
Engineering of real-time platforms using Socket.io and WebSockets, including high-concurrency event loops stable under 500+ concurrent live sessions and sub-second event propagation.
System Design and Scalable API Architecture
Experience in scalable API design, system design, performance tuning, and modular service-layer architecture. Reduced API latency by 35% and deployment errors by 40% across banking and healthcare products.
Agile Development and Team Leadership
Led a 5-person development team as backend lead, conducting bi-weekly code reviews, mentoring junior developers, and owning production incident response with average resolution under 45 minutes.
Tools and Development Practices
Proficient with Git, Postman, Agile/Scrum methodologies, code review processes, and production incident handling. Consistently delivered sprint goals on time across multiple release cycles.
Languages
EnglishFluent
Project history
Architected complete backend for 3 client products using Node.js, NestJS, and Express.js, cutting average API response time by 35% via query optimization and caching. Standardized RESTful API design across 2 teams, reducing integration bugs by 40%. Led production incident response for banking and healthcare platforms with average resolution under 45 minutes. Introduced modular NestJS service architecture reducing feature delivery time by 25%. Conducted bi-weekly code reviews for a 5-person team with focus on clean architecture, security, and performance.
Built granular RBAC engine controlling access to 30+ API endpoints across 5 user roles. Engineered JWT-based authentication with session expiry and audit logging to meet financial-grade security standards. Architected role-specific KPI dashboards cutting manual reporting effort by 70%. Built internal task assignment and operations workflow engine enabling real-time cross-branch task tracking. Tech stack: Node.js, Express.js, MongoDB, React.js, RBAC.
Engineered real-time parking availability system using WebSockets with sub-second event propagation. Designed geo-location filtering with MongoDB geospatial queries, cutting irrelevant push events by 80%. Optimized backend event loop for high-concurrency WebSocket connections, stable under 500+ concurrent live sessions. Built two-sided acceptance workflow with timeout handling and fallback queuing for reliability under load. Tech stack: Node.js, Socket.io, MongoDB, React.js, Geo-Location.