Available for immediate hires (15 Days Notice)

Crafting High-Performance
React Native Apps

I am Gowtham, a Mobile Engineer & Team Lead with 3.7+ years of experience. I build fluid, offline-first iOS, Android, Web, TV, and Desktop solutions at scale, optimized for 60 FPS performance and native bridging.

View My Projects
Download Resume
Ships to iOS Android Web TV Desktop
METRO BUNDLER v0.81.0

i Connecting to Metro Bundler on port 8081...

<View style={styles.container}>
const scrollY = useSharedValue(0);
Hermes Engine Active
9:4160 FPS
MAAZTER icon
MAAZTERSamacheer LMS Portal
SWIPING APPS
0+ Years
Professional ExperienceFocused on React Native & Mobile
0+ Apps
Production Apps ShippedApp Store, Play Store & Web
0M+ Users
Global Active UsersScaled government & commerce apps
0 FPS
App Performance GuaranteeReanimated & UI thread optimization
0K+ Downloads
NPM Package DownloadsPublished packages and tools
0 Platforms
Multi-Platform ExperienceiOS, Android, Web, TV & Desktop

Professional Experience

A review of my tenure and responsibilities at Resbee Info Tech, transitioning from a core developer to senior and team lead roles.

React Native Developer

Resbee Info Technologies Pvt Ltd

Oct 2024 - Present

Led a cross-functional mobile team of 4 engineers, conducting code reviews, defining architectural standards, and managing sprint delivery in an Agile/Scrum workflow using Jira. Architected scalable React Native applications for government and enterprise clients serving 2M+ users with 99.5% uptime.

Designed offline-first LMS systems using TanStack Query, WatermelonDB, Redux Toolkit, and NetInfo — reducing data sync failures by 60% in low-connectivity zones.
Developed reusable native video player modules using Swift and Kotlin supporting encrypted media playback; published packages to NPM with 100k+ downloads.
Built real-time communication workflows using Socket.IO and RabbitMQ for live learning, supporting up to 5,000 concurrent users.
Integrated FCM with advanced notification handling, deep linking, and background processing, improving user engagement by 35%.
Upgraded React Native applications from v0.63 to v0.85.2, migrating to Fabric renderer and TurboModules (New Architecture), improving frame rate from 45 to 60 FPS.
Built AI-powered features using LangChain, OpenAI APIs, and MCP architecture, cutting student query resolution time by 40%.

React Native Developer

Radaz Technologies Pvt Ltd

Mar 2023 - Oct 2024

Developed and maintained cross-platform mobile applications for Android and iOS using React Native, delivering 3 production apps across IoT and e-commerce domains.

Built IoT-based mobile applications with real-time device monitoring (ESP32, MQTT, Socket.IO), reducing device alert response time by 50%.
Integrated Google Maps SDKs for live tracking, geolocation, route handling, and map-based workflows, supporting 10K+ daily active users.
Implemented authentication systems, push notifications, deep linking, and OTA updates via Microsoft CodePush, reducing hotfix deployment time from 2 days to under 2 hours.
Improved app performance using FlatList optimization and memoization strategies, cutting list render time by 35% and eliminating dropped frames on low-end Android devices.

My Journey & Background

From structures in engineering to structures in code — a timeline of my professional growth and developer journey.

Gowtham — React Native Developer Open to work

Gowtham Jaganathan

React Native Developer & Mobile Architect · Tamil Nadu, India

B.E. Civil Engineering - Kongu Engineering College

2018 - 2022

Completed undergraduate degree in Civil Engineering with a GPA of 7.77 / 10. Discovered a deep interest in logical design structures and computing.

Self Learning & Transition

2022 - 2023

Committed to software development. Self-learned JavaScript, React, mobile systems architectures, and deployed initial trial mobile builds.

React Native Developer - Radaz Technologies

Mar 2023 - Oct 2024

Developed and maintained cross-platform mobile apps for Android & iOS. Shipped 3 production apps across IoT and e-commerce domains, including real-time monitoring (ESP32, MQTT).

React Native Developer & Lead - Resbee Info Technologies

Oct 2024 - Present

Promoted to lead a mobile team of 4 engineers. Responsible for sprint deliveries, code reviews, and architecting government-scale LMS platforms serving 2M+ users across India and Ethiopia.

Technical Skill Matrix

A depth map of my mobile engineering stack — hover to tilt each card, and watch proficiency fill as you scroll.

Mobile Core

Cross-platform · 5 skills
96
React Native CLI98%
Architect, Fabric/TurboModules, Reanimated
React Native (New Arch)95%
Fabric renderer, JSI, TurboModules
Expo92%
Managed & Bare Workflows, Custom Dev Clients
TypeScript95%
Strong typing, interfaces, strict configuration
JavaScript98%
ES6+, Event loop, closure, performance tuning

Native Development

Bridging · 5 skills
87
Kotlin85%
Custom Android modules, ExoPlayer wrappers
Swift82%
Custom iOS modules, AVFoundation, native buffers
Native Modules90%
C++ JSI, TurboModules creation
Hermes Engine92%
Bytecode compilation, GC configuration tweaks
ExoPlayer / AVFoundation88%
Custom video player engine wrapping

State & Storage

Data layer · 5 skills
92
Redux Toolkit92%
Scalable global state, slices pattern
Zustand95%
Lightweight state, transient state mappings
TanStack Query94%
Caching, query synchronizations, offline status
WatermelonDB / SQLite88%
Offline-first relational database setup
MMKV / Keychain90%
Fast local key-value caches & secure storage

Backend & Systems

Realtime · 4 skills
88
Firebase95%
Auth, Firestore, Messaging, Crashlytics
Socket.IO / MQTT90%
Real-time bi-directional messaging
AWS S3 / Amplify / Cognito82%
Cloud asset pipelines, user credentials
RabbitMQ / REST APIs85%
Message queuing, REST endpoints routing

Security & AI / Payments

Secure / AI · 4 skills
86
AES Encryption88%
AES-128 media stream decrypting
Razorpay90%
Secure payment workflows & checks
LangChain / OpenAI API85%
AI doubt-solving features routing
MCP Architecture80%
Custom model context protocol tools

Testing & DevOps

DevOps · 3 skills
89
CodePush92%
Over-the-air hotfix deployments
Jest85%
Unit testing of core layouts and store slices
Flipper / Debugging90%
Profile audits, memory leak diagnostics
React Native CLIReact Native (New Arch)ExpoTypeScriptJavaScriptKotlinSwiftNative ModulesHermes EngineExoPlayer / AVFoundationRedux ToolkitZustandTanStack QueryWatermelonDB / SQLiteMMKV / KeychainFirebaseSocket.IO / MQTTAWS S3 / Amplify / CognitoRabbitMQ / REST APIsAES EncryptionRazorpayLangChain / OpenAI APIMCP ArchitectureCodePushJestFlipper / Debugging

Featured Mobile Products

A curated showcase of production applications shipped to App Stores, ranging from government learning platforms to on-demand marketplaces.

Game Dev & GraphicsiOSAndroid

Pen Fight

60 FPS Physics Game (React Native + Skia)

Rebuilt the last-bench classic 'Pen Fight' as a real cross-platform mobile game — buttery 60 FPS physics, custom collision handling, and Skia-drawn visuals on Android & iOS.

React NativeSkiaReanimated 3Expo+2 more
Role: Creator & Developer
EdTech & GovernmentiOSAndroid

MAAZTER

LMS Platform (Tamil Nadu Government Project)

A large-scale LMS platform serving 500K+ students with real-time learning workflows and live examination systems handling 5,000+ concurrent users.

React NativeFirebaseRedux ToolkitSocket.IO+3 more
Role: Lead Mobile Developer
EdTech & GovernmentiOSAndroid

e-Khool LMS

Offline-First LMS (Assam Government Project)

A fully offline-first LMS for Assam Government schools in low-connectivity environments, enabling 50K+ students to access content without internet.

React Native (New Architecture)TanStack QueryWatermelonDBRedux Toolkit+3 more
Role: React Native Developer
EdTech & GovernmentiOSAndroid

AAEB eSchool & TVET eSchool

Ethiopian Government LMS Portal

Multi-role LMS applications supporting 1.2M+ users with real-time learning workflows and scalable content delivery across 10+ languages.

React NativeFirebaseAWS S3AWS Amplify+5 more
Role: Mobile Engineer
E-commerce & ServiceiOSAndroid

Suya Mobiles

Multi-Role E-commerce Platform

Developed User, Admin, and Sub-Admin applications within a single React Native codebase using role-based architecture, reducing codebase duplication by 60%.

React NativeFirebaseRazorpayGoogle Maps SDK+3 more
Role: Lead Mobile Developer
IoT AutomationiOSAndroid

IoT Automation Apps

Smart Bell & Water Controller

Developed mobile applications for ESP32-based automation systems, reducing manual intervention by 80% through scheduled smart bell and water monitoring workflows.

React NativeESP32MQTTSocket.IO+1 more
Role: Mobile Developer

Live Production Apps

Shipped to millions of users worldwide — browse the apps and open them directly on the official app stores.

Purple Info Tech logo

Google Play Developer

Verified

Purple Info Tech

Purple Info Tech builds fast, reliable mobile apps with clean design and real-world performance in mind.

MAAZTER icon

MAAZTER

Available on: Play Store & App Store

Samacheer curriculum-aligned LMS platform for Tamil Nadu school students, featuring offline course downloads, interactive testing suites, and AI-assisted doubt solving.

Rating: 4.6 ★Downloads: 500K+
GET IT ON
Google Play
Download on the
App Store
MAAZTER icon
Android iOS

Mobile Systems Architecture

Interactive system flow. Hover over any node to highlight the data pathways between React Native core, caching layers, and native bridges.

1. Core UI Layer

React Native App

JSI / Hermes engine thread

Redux & TanStack

Client caching & routing state

2. Middleware & Cache

WatermelonDB

Encrypted SQLite offline cache

Native Modules

Kotlin & Swift system layers

3. System Layers

Firebase & AWS

Auth, Firestore & S3 pipeline

OS: Android / iOS

Final native UI rendering

Performance Benchmarks

Practical optimization metrics attained across our production applications. Shipped with Proguard, split architectures, and Hermes optimization.

Bundle Size Optimization

Reduced base application sizes across client releases by stripping unused dependency symbols, configuring Gradle splits, compressing JSON resources, and enforcing asset pipelines.

Before
60MB
Optimized
20MB

Animation Optimization

Migrated high frequency gestures and animations to use React Native Reanimated worklets, bypassing the JS thread completely to maintain consistent frame renders.

Average
45 FPS
Target
60 FPS

App Startup Time

Tweaked Hermes engine configurations, postponed non-critical module initializations, lazy-loaded navigation screens, and optimized native entry hooks.

Launch speed
Standard
Improvement
0% Faster

Stability (Crash Rates)

Introduced Firebase Crashlytics boundaries, resolved native thread race conditions, configured automated offline fallback policies, and optimized memory allocations.

Errors
Legacy
Crash reduction
0% Lower

Case Studies

Deep dive into a major framework upgrade and architecture migration built for our high-scale enterprise applications.

Upgrade Migration

React Native Upgrade from 0.63 to 0.85.2

The Challenge

Upgrading legacy educational applications with custom native Kotlin/Swift media decoders and WatermelonDB modules without introducing regressions, while fully integrating the React Native New Architecture (Fabric & TurboModules).

Critical Roadblocks & Breaking Changes

  • Breaking changes in RCTBridge modules and iOS build configuration files.
  • Fabric rendering engine incompatibilities with older custom layout components.
  • Hermes garbage collection modifications causing transient sync errors in large database states.

Engineering Solutions

  • Implemented a staged migration model using Next Gen bridge configuration parameters.
  • Rewrote custom native media decoders to C++ JSI-based TurboModules.
  • Configured backwards-compatibility layers for Fabric components using bridge interfaces.

The Outcome

Successful migration. App startup latency cut by 45%. App rendering achieved solid 60 FPS on mid-range Android devices, with 70% lower crash rates.

Recommendations & Feedback

What directors, team leaders, and product clients say about my technical engineering and mobile architecture work.

"Gowtham's expertise in React Native is exceptional. He single-handedly solved our offline video playback security challenges by writing custom Kotlin/Swift decoders. His focus on performance and bundle sizes is outstanding."

D

Dr. Vinoth

Director of Engineering, Resbee Info Tech

"Working with Gowtham on our government LMS project (MAAZTER) was a breeze. He ensured that the application met strict accessibility requirements and translated our design guidelines into smooth 60 FPS transitions."

A

Arun Kumar

Product Owner, Government Education Board Projects

"Gowtham led our mobile team during the migration to React Native's New Architecture (Fabric & TurboModules). His deep knowledge of native modules and the Hermes engine saved us weeks of debugging time."

S

Sanjay Rajan

Senior Full Stack Engineer, Resbee Info Tech

"The Suya Mobiles app was developed and shipped ahead of schedule. Gowtham's setup of Firestore listeners and Razorpay payment flow has made our mobile commerce application incredibly stable and reliable."

A

A. Suresh

Client & Founder, Suya Mobiles Shop

Licenses & Certifications

Official credentials from the platforms below. Click a badge to flip it and verify the credential.

React Native Developer Certificate

Issuer: Udemy (Academind)

Issued: 2023Flip Info
Verify Credentials

Advanced React Native concepts: native modules bridging, code optimization, push notifications, and animations.

ID: UC-React-Native-2023

Verify Credential

Apple Deployment and Management

Issuer: Apple Inc.

Issued: 2024Flip Info
Verify Credentials

Advanced iOS deployment, App Store Connect management, push notification certificate configurations, and Apple business manager workflows.

ID: APPLE-DEP-2024

Verify Credential

Google Play Store Listing Certificate

Issuer: Google Play Academy

Issued: 2025Flip Info
Verify Credentials

App store optimization (ASO), assets release compliance, policy guidelines, and user conversion parameters.

ID: GPLAY-LIST-2025

Verify Credential

Modern Android App Architecture

Issuer: Google Developer Program

Issued: 2026Flip Info
Verify Credentials

Deep dive into Kotlin Coroutines, Jetpack components, memory footprint optimization, and native performance diagnostics.

ID: GOOGLE-AND-ARCH-2026

Verify Credential

AWS Certified Cloud Practitioner

Issuer: Amazon Web Services (AWS)

Issued: In Progress (2026)Flip Info
Verify Credentials

Cloud fundamentals, AWS core serverless pipelines (Lambda, S3, Cognito, API Gateway, Amplify), and billing parameters.

ID: AWS-CCP-PENDING

Verify Credential

React Native Video Tutorials

Tutorials and coding challenges from my YouTube channel @learn_with_gowtham, focusing on performance, custom UI, and native bridge modules.

Disable Font Scaling in React Native (Android + iOS) Full Guide
6:45React Native

Disable Font Scaling in React Native (Android + iOS) Full Guide

1.2K views•YouTube Tutorial
Building Liquid Glass Effect in React Native | iOS vs Android UI Demo
10:15Architecture

Building Liquid Glass Effect in React Native | iOS vs Android UI Demo

950 views•YouTube Tutorial
Trending Flying Text Animation in React Native | Reanimated Custom TextInput
15:30Database

Trending Flying Text Animation in React Native | Reanimated Custom TextInput

1.8K views•YouTube Tutorial
Trending Flying Text Animation in React Native | Reanimated Custom TextInput (Part 2)
12:10Animations

Trending Flying Text Animation in React Native | Reanimated Custom TextInput (Part 2)

1.1K views•YouTube Tutorial

GitHub Open Source

Contributing to the React Native developer ecosystem. Pinned repositories and live contribution calendar statistics.

Pinned Repositories

react-native-video

A <Video /> component for React Native, supporting play/pause control, fast-forward/rewind, buffering events, and custom native player controls.

Objective-C68001900
react-native-date-picker

A highly customizable native date picker component for React Native, supporting iOS and Android native pickers with light/dark adaptive layouts.

Java1200340
react-native-netinfo

React Native Network Info API for Android, iOS, macOS, Windows & Web, providing real-time connection status and active adapter parameters.

Kotlin3100450
react-native-webview

The official WebView component for React Native. Provides a native viewport wrapper to render responsive web contents, handle postMessage events, and capture navigation states.

Swift54001500

1,280 Contributions in the last year

Less
More

Language Statistics

TypeScript (55%)JavaScript (25%)Kotlin (15%)Swift (5%)

Medium Technical Articles

Deep dives into mobile systems architecture, native bridges optimization, and React Native New Architecture upgrades.

View Medium Profile
Automation
4 min read

How I Created a Professional GitHub Profile Using ChatGPT in Minutes

Learn how to use AI workflows to design and optimize a developer profile on GitHub, featuring stats tracking, pinned cards, and automated metrics.

Jan 12, 2026Read Article
React Native
5 min read

Disable Font Scaling in React Native (Android + iOS)

A comprehensive guide to locking typography scaling globally in React Native to prevent layout clipping and inconsistent UI behaviors.

Feb 20, 2026Read Article
Animations
6 min read

Trending Flying Text Animation in React Native with Reanimated

Step-by-step layout tutorial showing how to build flying text animations and custom interactive transitions using Reanimated v3.

Apr 05, 2026Read Article
UI/UX Design
8 min read

React Native Liquid Glass Native iOS Tab Bar

Integrating state-of-the-art liquid glass animation effects with standard bottom tab bar navigation controllers in React Native.

Jun 14, 2026Read Article

Why Hire Me?

A visual overview of my specialized value propositions for high-performance mobile application teams.

Technical Competence

Over 3.7 years of experience leading teams, defining structural standards, and compiling production-grade cross-platform apps at government scales.

Native Bridging Specialization

Hands-on experience writing custom Objective-C/Swift for iOS and Java/Kotlin for Android (ExoPlayer, AVPlayer wrappers) direct to JS context.

Offline-First Relational Architect

Deep expertise in database synchronizations using TanStack Query, WatermelonDB, Redux, and keychain encryption wrappers.

Agile & Product Delivery

Led sprint delivery for teams of up to 4 engineers using Jira workflows, optimizing hotfixes via CodePush from 2 days to under 2 hours.

Recruiter Quick-Info Panel

Essential hire details, notice timelines, and downloadable ATS-optimized CV files.

Download ATS Resume
Notice Period

Immediate (15 Days Notice)

Target Role

React Native Developer

Expected CTC

Negotiable

Relocation

Open to Relocation

Interested in scheduling a technical interview? Copy my contact email directly or send me a message:

Connect & Collaborate

Looking to hire or collaborate? Send me a message directly — it lands straight in my inbox — or reach me on WhatsApp and social profiles.

Message me on WhatsApp Connect on LinkedIn Call +91 63797 92412

Email

gowthamjaganthan@gmail.com

Location

Tamil Nadu, India

GitHub
Medium