Frontend Engineer · Thane, India
I'm Cyrus Gracias, a frontend engineer with more than five years of experience building high-performance web and mobile applications using React, React Native, Next.js, and TypeScript.
I specialize in production interfaces, developer tooling, commerce flows, and frontend architecture. I care about clear user experiences, robust type safety, and measurable business impact.
My recent work spans React Native mobile applications, Next.js monorepos, visual workflow canvases, performance optimizations, and legacy system migrations.
Key problems solved and measurable impact across engineering teams.
Mosaic Wellness · 2025-2026
Implemented Amazon Pay Balance SDK and UPI QR payment flows across a React Native app and Next.js monorepo for 500+ monthly users. Built CMS-configurable widget systems and cart optimizations that contributed to a 14% conversion increase.
React Native · Next.js · TypeScript · Reanimated
Kathreftis AI · 2023-2025
Built a React Flow drag-and-drop orchestration canvas with cURL import tooling, replacing developer-written Groovy scripts and reducing user-provisioning configuration time by 80%.
React · React Flow · TypeScript · Formik
Kathreftis AI · 2023-2025
Optimized authentication-record lists using Shopify FlashList, added Google Authenticator MFA migration using Protocol Buffers, and cut Webpack build times by 46% via route-level code splitting.
React Native · FlashList · Protobuf · Webpack
Jamsfy · 2021-2023
Led the migration of mixed enterprise JSP architecture to React. Engineered ChartJS performance visualizations for Auditzy from Lighthouse APIs and resolved UI freezes during PDF export pipelines.
React · ChartJS · Storybook · REST APIs
Full-stack, mobile, and AI-driven products built from concept to production.
Personal Project · 2026
AI-assisted interview preparation and spaced recall progressive web app (PWA) with automated questionnaires, evaluation, progress synchronization, and push reminders on an AWS serverless backend.
React · TypeScript · TanStack Router · Zustand · AWS Lambda · DynamoDB · Vitest
Startup Project · 2026
Offline-first operations and analytics mobile application built for Dongari Washing Centre, featuring speech-assisted wash entry, UPI QR payments, SQLite persistence, and Google Sheets cloud sync.
React Native · Expo · TypeScript · SQLite · Google Sheets API · Sentry
Web Application
Responsive movie and series discovery guide featuring real-time metadata search, detailed title info, and watchlist tracking backed by serverless Node.js functions.
JavaScript · Bootstrap · REST APIs · Netlify Functions
Mosaic Wellness
Mar 2025 - May 2026
Kathreftis AI
Jul 2023 - Mar 2025
Jamsfy
Nov 2021 - Jun 2023
Farzi Engineers
Dec 2020 - Nov 2021
Frontend & Mobile React, React Native, Next.js, TypeScript, JavaScript, Expo, Reanimated, FlashList
State & Architecture Zustand, Redux / Redux Saga, TanStack Router, React Query, REST, GraphQL
Backend & Cloud Node.js, AWS (Lambda, DynamoDB, SQS, Amplify), SQLite, Vercel AI Gateway
Testing & Tooling Playwright, React Testing Library, Storybook, ChartJS, Styled Components, Figma, Git, Linux
St. Xavier's Autonomous College
2017 - 2020
Coursera · Verify credential
Jul 2024
Cutshort
Nov 2020
Contact
If you would like to work together or discuss a role, feel free to reach out.