chaitanya sai
JavaScript & React Front-End Engineer
About
Dynamic Front-End Engineer with over 8 years of experience specializing in React.js, TypeScript, JavaScript, responsive web development, UI/UX, and reusable component architecture. Skilled in building scalable web applications across subscription management, customer self-care, e-commerce, REST API integration, state management, and complex UI workflow. Developed and integrated payment solutions including Apple Pay, PayPal, and credit/debit cards, while delivering seamless customer journeys and user-centric experiences. Steered front-end modernization through PHP-to-React migration, reusable component development, performance optimization, and technology transformation initiatives. Led technical delivery and mentored developers, contributing to a ~75–80% increase in annual BritBox users through product, UI, and customer-experience enhancements.
Skills & Expertise (18)
Work Experience
Lead Engineer
Evergent Technologies
Dec 2025 - Present
Leading React.js development for BritBox Self-Care, delivering subscription management workflow, dynamic customer journeys, and responsive user interfaces. Driving front-end enhancements across subscription, payment, and account-management experiences to improve usability and customer engagement. Integrating Adyen, Apple Pay, PayPal, and credit/debit card payments, enabling seamless payment journeys across customer-facing workflow. Managing REST API integration, application state, error managing, and dynamic data rendering across business-critical applications. Contributing to BritBox growth from approximately 2 lakhs to 3.64 lakh annual users (~75–80%) through product, UX, payment, and experimentation initiatives. Applying Optimizely A/B testing to support product experimentation and user-growth initiatives.
Senior Software Engineer
Evergent Technologies
Mar 2024 - Dec 2025
Developed reusable React.js components across Account Management, Service Administration, Product Administration, Lead Management, Billing Management, and Ticket Management modules. Integrated REST APIs and managed application state across complex subscription, account, billing, and service-management workflow. Implemented responsive interfaces, dynamic data rendering, and reusable UI patterns for business-critical product modules. Delivered front-end enhancements to Evergent’s subscription management product for ASTRO, a Malaysian OTT customer, covering product management, subscription management, payment configurations, service/user administration, account management and role-based access.
Software Engineer (Contract)
Ca-One India
Mar 2023 - Mar 2024
Single-handedly migrated the Amazon Pay BAID Tool from PHP to React.js while maintaining existing application functionality. Developed reusable, maintainable React.js components and integrated APIs throughout the technology migration. Maintained functionality parity while transitioning the application to a modern React-based architecture. Delivered a stable migration with no reported issues during the following four months. Collaborated with development teams to integrate business requirements and application functionality. Transitioned into a permanent role with Evergent Technologies following successful delivery and continued product ownership.
Front-End Developer
IDC Technologies
Nov 2022 - Mar 2023
Developed responsive front-end features for an e-learning platform using modern web technologies. Implemented Single Sign-On (SSO) functionality to streamline user authentication and access. Developed CRUD APIs for data retrieval and learning-feature updates. Improved application usability, responsiveness, and maintainability through structured front-end development. Collaborated with back-end teams to integrate APIs and deliver end-to-end functionality.
Front-End Developer
IINCORE Software Systems
Oct 2018 - Nov 2022
Developed user-facing web features using React.js, JavaScript, HTML, and CSS across customer-facing applications. Built responsive and reusable UI components aligned with business and user requirements. Developed e-commerce workflow covering user data and order management. Integrated front-end functionality with back-end services and APIs. Enhanced usability, maintainability, and responsiveness across web applications.
Education
B.Tech. / B.E. – Electrical Engineering - JNTU Kakinada
- 2018 · Afghanistan
Certifications
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