Nabeel M S

Built and optimized GraphQL APIs for a high-traffic digital news platform (millions of monthly users), implementing efficient pagination, caching, and query optimization for large datasets. Translated Figma designs into responsive, production-ready Next.js interfaces with cross-device compatibility. Improved performance using image optimization, lazy loading, and JavaScript bundle-size reduction. Managed end-to-end feature delivery across development, testing, deployment, and production support, maintaining quality and stability with a strong focus on cloud deployment. Collaborated with cross-functional teams to deliver scalable features aligned with product requirements and performance goals.

Integrated Stripe, PayFort, NGenius, and CC Avenue payment gateways across enterprise applications, implementing secure transaction flows, webhooks, refunds, and reconciliation logic. Improved API response times by 15–30% through database query optimization, connection pooling, caching, and backend performance improvements. Developed full-stack admin portals and mobile backends for enterprise automotive and mobility clients. Built booking systems, authentication, transaction management, and payment processing workflows. Designed and implemented scalable APIs using Node.js, NestJS, GraphQL, and REST, enabling reliable communication between frontend and backend systems. Worked in Agile teams to deliver production-ready features and resolve technical issues.

Developed backend modules using Node.js, NestJS, MongoDB, and Express.js for internal and client-facing applications. Built, tested, maintained, and documented RESTful APIs supporting business-critical workflows. Implemented features for administrative dashboards using modern frontend technologies. Participated in Agile sprint planning, development, testing, peer code reviews, and Git-based workflows. Collaborated with senior engineers to troubleshoot issues and improve backend reliability, maintainability, and performance.