Full Stack Developer at Mastercard, USA

Designed and developed end-to-end features for high-transaction web applications, improving user engagement by 20% through responsive and scalable UI components. Collaborated with UX/UI designers and product managers to implement RESTful APIs and microservices architecture, enhancing system modularity and maintainability. Developed and maintained secure, performant backend services using Node.js and Express, integrating with databases such as MongoDB and PostgreSQL. Automated build and deployment processes using CI/CD pipelines (Jenkins, GitHub Actions), reducing deployment time by 40% and minimizing downtime. Conducted code reviews and unit testing (Jest, Mocha), improving code coverage and reducing bugs in production by 30%. Implemented OAuth 2.0 and JWT-based authentication mechanisms to ensure secure access to sensitive financial data.

Software Developer at CGI, India

Developed and enhanced multiple client-facing web applications using React.js, Angular, and Redux, boosting application responsiveness and usability. Built reusable components and libraries to streamline development cycles and standardize UI elements across projects. Integrated third-party APIs and payment gateways, enhancing transactional capabilities and customer satisfaction. Optimized SQL queries and database schema design to improve data retrieval speeds by 25%. Collaborated closely with QA teams to identify and resolve bugs, ensuring software quality and reliability. Participated in Agile Scrum ceremonies, including sprint planning, daily stand-ups, and retrospectives, ensuring timely delivery of sprint goals. Contributed to migration projects moving legacy systems to cloud environments (AWS), enabling scalability and cost-efficiency. Created comprehensive technical documentation and user manuals to facilitate knowledge transfer and onboarding of new team members.

Software Developer at MASTERCARD

Developed and enhanced React and Next.js front-end applications, improving page load performance by 40% through code splitting, memoization, and lazy loading. Built and maintained secure REST and GraphQL APIs using Node.js, Express.js, and Spring Boot, supporting high-volume financial transactions. Integrated backend services with AWS Lambda, API Gateway, and DynamoDB, enabling scalable, event-driven workflows and reducing infrastructure costs by 25%. Implemented OAuth 2.0 and JWT-based authentication, strengthening API security. Automated CI/CD pipelines using Jenkins, GitHub, Docker, and Kubernetes, cutting deployment time by 60% and improving release stability. Improved observability via Prometheus, Grafana, and ELK Stack, reducing production issue resolution time by 30%. Collaborated with UX designers, QA, and product owners in Agile sprints, consistently delivering features on schedule.