Available for freelance
Hi, I'm Raj 👋
Senior developer working with Kotlin, Flutter, React and Next.js. 15+ production apps shipped since 2021.
Status
Raj Javiya
Android & Flutter developer
Open to new projects
Tap an app · pull down from the top for notifications · hold to rearrange
4+
Years building apps
15+
Apps shipped
10K+
Active users
4.8★
App Store rating
About
I care about apps that feel smooth to use and code that stays easy to change. That means Clean Architecture, careful performance work, and predictable state management.
60fps UIs, tuned with Baseline Profiles and the Android Studio Profiler.
MVVM, unidirectional data flow, and feature-first modules that stay easy to change.
Native Android with Kotlin & Compose, and Flutter for iOS + Android from one codebase.
Automated CI/CD with Gradle and GitHub Actions, all the way to the stores.
Apps
Production apps on the App Store and Google Play, plus my own products and open-source tools.
Food delivery
Screenshots· swipe or tap to enlarge
A full-stack food delivery app with a Supabase backend (real-time orders on Postgres) and a custom rewards & loyalty system. Live on both the App Store and Google Play.
What I did
Drove a 30% increase in repeat orders with modular rewards and real-time ordering.
Finance · Group expenses
Screenshots· swipe or tap to enlarge
Split expenses with friends and groups. Invite people, track who owes what, and keep everything in sync in real time — with Owner, Admin, and Member roles for fine-grained permissions.
What I did
Designed a scalable group system with multi-level role permissions and instant sync.
Sports · Cricket
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Live cricket scoring for gully matches. Ball-by-ball scoring with animated FOUR/SIX celebrations, squads, coin toss, wickets, and player rankings — and it all works fully offline.
What I did
Built the full match lifecycle — setup, live scoring, scorecard — offline, with smooth animated feedback.
CRM · Sales goals
A high-scale CRM app for goal tracking and incentive management. Built natively with Kotlin and MVVM, with Retrofit caching, Room, and Coroutines/Flow for async work.
What I did
Cut processing time by 25% through optimized networking and async work, and lifted FCM engagement by 15%.
Sales productivity
A mobile sales tool with a custom calendar, reusable UI components, and adaptive layouts for phones and tablets.
What I did
Raised team efficiency by 40% and overall sales by 25% with a mobile-first, component-driven workflow.
Admin panel · Billing & stock
In development
Workflow· swipe or tap to enlarge
A private admin panel and billing system for a forging company in Rajkot. It brings stock, production, GST billing, payments, purchases, expenses, staff salary, and monthly profit into one app that works in any browser — on a computer or a phone.
What I did
Designed the full system: owner-controlled users and permissions, stock that balances itself (inward − outward − rejection), GST invoices in the client’s own format, and a monthly P&L built automatically.
Flutter SDK · Open source
A production-ready feature flag SDK for Flutter. Its merge engine combines local JSON, Firebase Remote Config, and custom REST APIs — with percentage rollouts and audience targeting.
What I did
Built an enterprise-grade flag SDK with a cascading merge engine, targeting, and analytics sampling.
Developer productivity
A self-hosted workspace for developers that replaces six everyday tools: projects, tasks, notes, secrets, time tracking, and dev utilities — in one fast, keyboard-first app.
What I did
Combined 6+ tools into one app, with a client-side encrypted secrets vault and a real-time backend.
Open source
Repositories I’ve starred and built on recently.
52+
Repositories
8K+
Commits
Dart
SnapMind is an AI-powered mobile app that acts as a personal second brain for professionals. Users capture anything — voice notes, text, images, links — and the AI automatically organizes, summarizes, and connects their ideas. The right insight surfaces at the right moment, so nothing important ever gets lost again.
Private
Skills
Native Android, Flutter and the web — plus the architecture, data, and testing skills that make products reliable.
Kotlin, Jetpack Compose, and the Android SDK.
Cross-platform apps, custom widgets, and platform channels.
Web platforms and admin panels with React, Next.js and Node.js.
Code that stays easy to test and change as the app grows.
Databases, APIs, offline-first data layers and real-time sync.
Automated tests, profiling, and CI/CD release pipelines.
AI-assisted workflows for faster, higher-quality delivery.
Experience
Release notes from 4+ years of building mobile apps — from freelance modules to leading production releases.
Esparkbiz
Building and shipping production apps for Android and iOS with Flutter — and going native with Kotlin and Jetpack Compose when a feature needs the platform.
What's new
Esparkbiz
Built and refactored features across production mobile apps in an Agile team.
What's new
Freelance
Built native Android modules and cross-platform app features for clients.
What's new
Achievements
Revived and finished a side project using GitHub Copilot, as part of a global challenge on AI-assisted engineering.
Awarded for completing a DEV Weekend Challenge — planning, building, and shipping in a single weekend.
Work with me
Everything you can get from me — from a first MVP to store release. Tap Get and I’ll reply with a plan and a quote within a day.
Raj Javiya
Mobile & web development
Offers In-App Purchases
One codebase for iOS and Android — from Figma designs to a store-ready app, or a fast MVP that can grow into the full product.
iOS & Android from one codebase · Clean Architecture + BLoC/Cubit · MVP to full product
Kotlin and Jetpack Compose apps with MVVM — or native modules when a Flutter app needs platform-specific features.
Kotlin & Jetpack Compose · Native modules for Flutter apps · Retrofit, Room & FCM
Dashboards and back-office tools with React and Next.js: billing, stock, reports, and role-based access for your team.
Next.js / React · Role-based access & audit logs · Reports, billing & exports
Connect your app to REST or GraphQL APIs, Supabase or Firebase — with login, real-time updates and push notifications.
REST & GraphQL APIs · Supabase / Firebase / Node.js · Auth, real-time & push (FCM)
A review of your existing app: structure, state management and performance — with a clear plan to fix what slows your team down.
Codebase & architecture audit · State management refactor · Performance fixes
Get your app published and keep releases smooth: store listings, versioning, staged rollouts and automated CI/CD builds.
Store submission & review · Staged rollouts & versioning · CI/CD (GitHub Actions, Codemagic)
Available for freelance
Contact
Raj Javiya
Usually replies within a day
Hey 👋 thanks for stopping by!
Got an app idea, a codebase that needs help, or want a second opinion on architecture?
Send me a message — I usually reply within a day.
