Pavan Pavan Kolusu Sai K

About Pavan Pavan Kolusu Sai K

Full Stack Developer with over 5 years of hands-on experience building scalable, secure, and accessible web applications. I work primarily with React and Angular using TypeScript, with a strong focus on performance, usability, and standards compliance. My work has led to improved Core Web Vitals, WCAG 2.1 AA compliance, and faster release cycles through automation and CI/CD. I enjoy working closely with cross-functional teams across industries like finance, retail and healthcare to turn real business needs into clean reliable solutions.

Experience

1. Full Stack Developer

   Citi

   Jan 2025 — Present · US

   Developed reusable React and TypeScript components and design patterns, achieving a 30% reduction in key page Largest Contentful Paint (LCP) through effective code-splitting, memoization and image optimization techniques.• Enhanced web accessibility by addressing high-priority issues such as ARIA attributes, color contrast, and focus order, resulting in a 60% decrease in automated axe violations from one release to the next.• Integrated secure OAuth2 and JWT authentication flows, implementing robust client-side guards, comprehensive error handling, retry mechanisms, and client-side caching to minimize redundant API calls.• Increased UI test coverage to 80% utilizing Jest and React Testing Library, along with smoke end-to-end (E2E) testing in Cypress, significantly reducing post-release UI defects.• Collaborated with backend teams to define API contracts and successfully deployed applications via Jenkins to AWS (EC2/S3); incorporated bundle analysis into the continuous integration (CI) pipeline to proactively monitor and address performance regressions

Education

• Gudlavalleru Engineering College

  Bachelor's degree, Computer Science & Engineering

• Texas Tech University

  Master of Science - MS, Computer Science