Jalaiah Sunnapu

Software Engineer with 3+ years of experience building scalable React.js applications and full-stack Node.js systems for enterprise platforms serving 80,000+ users. Expertise in React.js, TypeScript, Redux Toolkit, RTK Query, Node.js, Express.js, PostgreSQL, Redis, and AI-powered data pipelines. Proven track record in frontend performance optimization, reusable component architecture, REST API design, and Agile/Scrum delivery.

System Engineer at Tata Consultancy Services (TCS) (2023-03 – Present)

• Developed and maintained scalable React.js applications using TypeScript, Redux Toolkit, and RTK Query for enterprise platforms serving 80,000+ active users across multiple product lines.
• Built reusable UI component libraries using Material UI, reducing development time by 30% and ensuring design consistency across applications.
• Integrated REST APIs with RTK Query caching, polling, and invalidation strategies, reducing redundant network requests by 40%.
• Optimized frontend performance through code splitting, lazy loading, React.memo, useMemo, useCallback, and virtualized list rendering.
• Implemented secure JWT authentication, protected routes, role-based access control (RBAC), and token refresh mechanisms.
• Collaborated with backend engineers, QA, designers, and stakeholders in Agile/Scrum sprints, code reviews, and retrospectives.

B.Tech in Electronics and Communication Engineering – Bharath Institute of Higher Education and Research (BIHER) (2018 – 2022)