Skip to work
SK
Contact
Open to work
SK

SawanKumar

Mobile app developer/Bangalore, India

iOSAndroid

Mobile app developer with 3+ years building cross-platform applications in React Native, TypeScript and Expo. Shipped 3 apps to the App Store and Google Play — 4.5+ star ratings, 95%+ crash-free sessions, 15,000+ downloads.

Also builds the web side of the product: 10+ production applications across enterprise and startup teams, serving 50,000+ users. Currently a Project Engineer at Wipro Technologies, working across React Native, React and Next.js.

4.5
Store rating
15K+
Downloads
3
Apps shipped
3+ yrs
Experience
Get in touchGitHubLinkedIn
Preview

Preview

Drag, scroll or use ← →

Live chart
FlipperLive chart
Order ticket
FlipperOrder ticket
Portfolio
FlipperPortfolio
Wallet connect
FlipperWallet connect
College predictor
Shiksha SamadhanCollege predictor
Branch predictor
Shiksha SamadhanBranch predictor
Choice filling
Shiksha SamadhanChoice filling
Results
Shiksha SamadhanResults

Work

What I’ve shipped

F

Flipper

Cross-platform crypto trading app

Finance · iOS · Android

Full-stack React Native mobile application with TypeScript, implementing Redux for state management and custom native modules for secure wallet connectivity.

Real-time market data streams over WebSocket into TradingView charts, with rendering tuned to hold 60 FPS on both platforms. Published to the App Store and Google Play.

  • Real-time TradingView charts with WebSocket connections
  • Accelerated rendering to 60 FPS on both iOS and Android
  • Custom native modules for secure wallet connectivity
  • Published to App Store and Google Play
60 fps
Chart rendering
iOS + Android
Single codebase
Real-time
WebSocket feed
  • React Native
  • TypeScript
  • Redux
  • Expo
S

Shiksha Samadhan

College admissions platform

Education · Web · Android

Full-stack education platform with Next.js, React.js, and TypeScript serving 1 Lakh+ students, featuring College Predictor, Branch Predictor, and Choice Filling tools for JEE, NEET, BITSAT counseling.

Server-rendered for search, with TanStack Query caching the prediction results students re-run dozens of times during counselling. A companion Android app ships the same tools on mobile.

  • College Predictor, Branch Predictor & Choice Filling tools
  • Coverage across 500+ colleges and 200+ courses
  • Server-side rendering (SSR) with TanStack Query for caching
  • Companion mobile app on Google Play with cross-platform support
1 Lakh+
Students served
500+
Colleges covered
200+
Courses listed
  • Next.js
  • React.js
  • TypeScript
  • TanStack Query

What’s new

Version history

  1. 2.0.0

    Current

    Project Engineer

    Jan 2025 — Present

    Wipro Technologies · Bangalore, India · Full-time

    • Developed enterprise web applications using React.js, Next.js, React Native and TypeScript, building 20+ reusable UI components with Material UI and Tailwind CSS following atomic design principles.
    • Implemented Redux Toolkit, React Query, and React Hooks for scalable state management across 3 client projects serving 25,000+ users, achieving 30% improvement in page load speed and 25% reduction in API calls.
    • Architected 12+ responsive dashboards with data visualization using Chart.js and D3.js, integrated REST APIs and GraphQL endpoints, and configured CI/CD pipelines with Jenkins reducing deployment time by 40%.
    • Wrote 100+ unit and integration tests using Jest and React Testing Library achieving 85%+ code coverage. Streamlined Webpack bundles reducing build size by 35% through code splitting and lazy loading.
    • React.js
    • Next.js
    • React Native
    • TypeScript
    • Redux Toolkit
    • Jest
    • D3.js
    • Jenkins

  2. 1.0.0

    React Native Developer

    Mar 2023 — Dec 2024

    Spectent · Remote · Remote

    • Delivered 3 production-ready cross-platform mobile applications from scratch serving 10,000+ active users using React Native, TypeScript, and Expo, implementing 50+ screens with React Navigation and deep linking.
    • Engineered offline-first mobile architecture using AsyncStorage and Redux Persist with background sync, reducing data loading time by 30% and handling 500+ API requests/minute with efficient caching.
    • Published 3 applications to App Store and Google Play achieving 4.5+ star ratings and 95%+ crash-free sessions across 15,000+ downloads, managing OTA updates with CodePush reducing release cycles by 60%.
    • Fine-tuned React Native performance using useMemo, useCallback, FlatList virtualization, and Hermes engine, achieving 20% faster cold startup and reducing bundle size by 40% across iOS and Android.
    • React Native
    • TypeScript
    • Expo
    • Redux Persist
    • AsyncStorage
    • CodePush
    • Hermes

Performance

Measured, not claimed

Numbers from shipped production apps — every one of them is on the résumé.

95%+
Crash-free sessions

Across 15,000+ downloads on iOS and Android

60 fps
Sustained frame rate

FlatList virtualization, useMemo/useCallback, Hermes

40%
Smaller bundle

React Native builds, iOS and Android

20%
Faster cold start

Hermes engine and startup path tuning

60%
Shorter release cycle

OTA updates shipped with CodePush

85%+
Test coverage

100+ unit and integration tests, Jest and RTL

Information

Specification

Mobile
React Native, Expo, React Native CLI, React Navigation, AsyncStorage
Frontend
React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Material UI
State
Redux, Redux Toolkit, React Hooks, Context API, MobX, React Query, Zustand
Tooling
Webpack, Vite, Chrome DevTools, Flipper, Jest, React Testing Library, Git, Docker
Release
App Store, Google Play, CI/CD, Jenkins, GitHub Actions, AWS, Vercel, Netlify
Backend
Node.js, Express.js, REST APIs, GraphQL, PostgreSQL, MongoDB, Firebase, Agile/Scrum
Education
B.Tech, Information TechnologyNoida Institute of Engineering and Technology2018 — 2022 · 71%
Certifications
  • Full Stack Web DevelopmentCross-Platform Mobile Development Specialization
  • React Native — The Practical GuideUdemy Professional Certificate
Based in
Bangalore, IndiaOpen to remote & hybrid
Learning
Currently exploring AI/ML integrations

Developer

Get in touch

sawankumar1012@gmail.com
+91 9693550919
Based in
Bangalore, India
Open to remote & hybrid
Status
Open to work