Sundar Kulkarni

Software Development Engineer II | React | Redux | TypeScript | Ex-Jio

Mumbai Metropolitan Region

About

๐Ÿš€ Software Developer passionate about crafting high-performance, accessible, and scalable web applications. With hands-on experience in React, TypeScript, and Angular, I specialize in building modern, responsive interfaces that deliver seamless user experiences across platforms. ๐Ÿ’ก Currently at BarrierBreak, I focus on developing accessible front-end solutions that comply with WCAG 2.2 AA standard, ensuring usability and inclusivity for all users. I work with component libraries like aria-react-components, building reusable and maintainable UI systems that align with accessibility best practices. ๐Ÿ› ๏ธ Previously at Jio Platforms Limited, I contributed to multiple large-scale products, including JioWhatsapp, JioCampaigns, and JioSwift, developing feature-rich front-end architectures using React, TypeScript, and Redux. I built reusable component libraries, optimized application performance, and collaborated with cross-functional teams to deliver responsive, secure, and high-quality user interfaces. ๐Ÿ’ป Technical Skill Set: * Frontend Development: React, TypeScript, Angular, Redux, Next.js, SCSS, TailwindCSS * Accessibility (A11y): WCAG standards, ARIA roles, Keyboard navigation * Integrations: Stripe, SSO, RESTful APIs, Axios * Tools & Practices: Git, Jira, Performance optimization, Code refactoring, Reusable components ๐ŸŒŸ I believe great web experiences should be both inclusive and performant. Iโ€™m passionate about building user interfaces that combine technical excellence with thoughtful design, and I continually seek opportunities to learn, innovate, and contribute to impactful digital products.

Experience

  • BarrierBreak (Hybrid)
    • Software Development Engineer II
      Mar 2026 - Present ยท 4 mos

    • Frontend Developer
      May 2025 - Mar 2026 ยท 11 mos

  • Jio (On-site)
    • Software Development Engineer 1
      Sep 2024 - Apr 2025 ยท 8 mos

      Led the frontend development for JioWhatsapp, a large-scale bulk messaging application, from scratch, overseeing the architecture and implementation of key modules. Managed a team of front-end developers, ensuring smooth collaboration and high-quality code delivery. Key Contributions: Scalable Architecture: Designed a modular and maintainable React-based frontend using TypeScript and Redux for efficient state management. Real-Time Reports: Integrated WebSockets and optimized rendering for seamless real-time conversations. Key Contributions: Custom Text Editor: Implemented an advanced text editor supporting rich text formatting, media attachments, and other interactive features. Scalable Architecture: Designed a modular and maintainable React-based frontend using TypeScript and Redux for efficient state management. Real-Time Messaging: Integrated WebSockets and optimized rendering for seamless real-time reporting. User Interface & Experience: Developed an intuitive, responsive, and accessible UI to enhance user engagement. Performance Optimization: Improved load times and responsiveness by optimizing API calls and minimizing re-renders. User Interface & Experience: Developed an intuitive, responsive, and accessible UI to enhance user engagement. Performance Optimization: Improved load times and responsiveness by optimizing API calls and minimizing re-renders.

    • Software Engineer
      Dec 2023 - Sep 2024 ยท 10 mos

      Built scalable and high-performance applications with React, TypeScript, and Redux. Successfully contributed to projects like JioCampaigns (1.0 and 2.0), JioNotify, and JioSwift. Implemented key features such as dynamic forms, advanced text editors, etc . Integrated RESTful APIs and delivered responsive, accessible, and user-friendly interfaces.

    • Graduate Engineer Trainee
      Jul 2022 - Nov 2023 ยท 1 yr 5 mos