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SIVAGNANA SOWNDARYA R

Available to hire

I'm SIVAGNANA SOWNDARYA R, a Frontend Engineer specializing in React and React Native, passionate about building scalable, high-performance, user-centric applications.

About

I’m SIVAGNANA SOWNDARYA R, a Frontend Engineer specializing in React and React Native, passionate about building scalable, high-performance, user-centric applications.

As a co-founder of Mistake.cool, I’ve shipped real-time features and led products from concept to production. If you need more information or want to hear some crazy stories, please reach out.

  • 5 years' experience
  • Joined March 2026

Languages

  • TamilAdvanced
  • EnglishAdvanced

Industry experience

  • Computers & Electronics
  • Software & Internet

More experts in Chennai, India

Work experience

Co-Founder & Frontend Engineer · mistake.coolJan 2024 – Present · 2 yrs 11 mos

Co-founded Mistake.cool; built and launched cross-platform mobile app (Android & iOS) with React Native; designed 50% of UI screens in Figma (UI & UX); implemented real-time chat/audio/video using WebSockets and LiveKit; implemented authentication flows (multi-account, organization-based access); integrated payment UIs with Stripe and Razorpay; built scalable file upload, notifications, and background services; extended product with web (Vite + React) and desktop (Electron); created custom charts (bar, pie, area) with Rough.js; led onboarding, product demos, and sales; managed app deployment including iOS code signing and Electron packaging.

Associate Product Engineer · TemenosDec 2021 – Dec 2023 · 2 yrs 1 mo

Built components for banking entity migration; optimized APIs and improved response performance; designed and enhanced UI/UX flows for better usability and consistency; contributed to frontend performance and stability in a banking environment.

Program Analyst Trainee (Intern) · CognizantMar 2021 – Dec 2021 · 10 mos

Trained in JavaScript, testing, and UI development; built a railway ticket booking web app using HTML, CSS, and JavaScript.

Education

Bachelor of Engineering in ECE · St. Joseph's Institute of Technology2017 – 2021

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