Senior Mobile Developer

Hi, I'm Raj Javiya

Mobile developer building high-performance Native & Cross-Platform apps.

Architecting and shipping production-grade mobile applications across Native Android (Kotlin, Jetpack Compose) and Cross-Platform (Flutter, Dart), leveraging Clean Architecture (MVVM) since 2021.

Explore My Work Get in Touch

15+ Production Apps4+ Years ExperienceNative & Cross-Platform

SplitEase — Flutter expense-splitting app screenshot

KotlinJetpack ComposeFlutterDartClean Architecture (MVVM)Coroutines & StateFlowBLoC / CubitHilt & DaggerRetrofit & RoomSupabaseFirebase FCMCI/CD (Gradle & Actions)Material Design 3GetItKotlinJetpack ComposeFlutterDartClean Architecture (MVVM)Coroutines & StateFlowBLoC / CubitHilt & DaggerRetrofit & RoomSupabaseFirebase FCMCI/CD (Gradle & Actions)Material Design 3GetIt

Professional Vision

Mobile Clean Architecture.

I believe in building software that is as performant under the hood as it is responsive on the surface. My approach centers on modular Clean Architecture (MVVM), native platform optimization, and deterministic state management.

Performance & Profiling

Achieving 60fps smoothness with Baseline Profiles and Android Studio Profiler.

Clean Architecture (MVVM)

Unidirectional data flows, decoupled layers, and feature-first modularization.

Native & Cross-Platform

Dual-stack expertise across Native Android (Kotlin/Compose) and Flutter (Dart).

CI/CD & Delivery

Automated release pipelines with Gradle, GitHub Actions, and store deployment.

Verified Metrics

Impact by Numbers.

Tangible results from architecting high-scale cross-platform systems and modular engineering environments.

Production Grade

DEPLOYED APPS

Efficiency Lift

DEV VELOCITY

Stability Index

0.0%

CRASH-FREE

Industrial Tenure

YEARS EXP

Engineering Velocity Tier

Classified within the top 5% of production-grade architecture systems.

99%

RETENTION

4.9/5

SATISFACTION

99.9%

CRASH-FREE

Portfolio Showcase

Featured Mobile Projects.

Production mobile applications engineered for performance across Native Android (Kotlin, Compose) and Flutter (Dart).

Developer OS / ProductivityPersonal

ORBIT

A private, self-hosted operating system for developers — built to replace the 6+ tools a typical developer juggles daily. Projects, tasks, notes, secrets, time tracking, email templates, and developer utilities — all in one fast, keyboard-first interface.

React 19ViteSupabasePostgreSQLAES-256 EncryptionSelf-hostedKeyboard-firstVercel

Engineering Impact

Collapsed 6+ developer tools into one self-hosted, keyboard-first OS — with client-side encrypted secrets vault and a real-time Supabase backend.

Modules

10+

Tools replaced

Flutter SDK / PackageOpen Source

FEATURE GATE PRO

A high-performance, robust, and extensible Feature Flag SDK for Flutter. FeatureGate Pro is designed for enterprise and production scale, offering a unified Merge Engine that seamlessly cascades between Local JSON configs, Firebase Remote Config, and custom REST APIs.

FlutterDartSDKFirebase Remote ConfigREST APIPercentage RolloutsAudience TargetingDeveloper Dashboard

Engineering Impact

Engineered an enterprise-grade Feature Flag SDK featuring a cascade Merge Engine, audience targeting, and analytics sampling.

Platform

Flutter & Dart

Distribution

pub.dev

FinTech / Social ExpensePersonal

SPLITEASE

A comprehensive expense management engine facilitating group orchestration, peer invitations, and automated split synchronization. Features multi-tier role management (Owner, Admin, Member) with granular permission control.

FlutterSupabaseEdge FunctionsCustom AnimationsReal-time SyncComplex LogicClean ArchitectureDependency Injection (GetIt)

Engineering Impact

Architected a scalable group-logic system with multi-tier role permissions and instant synchronization.

Tracking

+50%

Scale

Real-time

Sports / CricketPersonal

POCKET SCORE

A real-time cricket scoring app built for gully cricket. Features live ball-by-ball scoring with animated FOUR/SIX celebrations, squad management, match setup with coin toss, wicket tracking, and player rankings — all offline-first.

FlutterDartHive (Local DB)Custom AnimationsOffline FirstClean ArchitectureState Management

Engineering Impact

Crafted a full cricket match lifecycle — from squad setup to live scoring to scorecard — entirely offline with smooth animated feedback.

Screens

16+

Offline

100%

Logistics / ConsumerEsparkbiz

DYSHEZ

Full-stack mobile food delivery application with Supabase-powered backend (real-time orders, Postgres DB) and custom Rewards & Loyalty system — data layer directly reimplementable with Retrofit/Room and Supabase Kotlin client.

FlutterDartSupabase (Postgres)Retrofit / Room PatternClean ArchitectureCI/CD PipelinesSentryClarity

Engineering Impact

Engineered a 30% increase in repeat orders via modular rewards and real-time ordering logic.

Scale

10K+

Rating

4.8

App Store Play Store

Sales / ProductivityEsparkbiz

SMACKDAB

Mobile sales productivity tool that boosted team efficiency by 40% and overall sales by 25%. Engineered with custom calendar modules, reusable Composables/UI components, and adaptive phone/tablet layouts.

Flutter / Jetpack ComposeModular UI ComposablesCustom CalendarAdaptive LayoutsReactive Data FlowSales Intelligence

Engineering Impact

Transformed sales workflows into a mobile-first, component-driven intelligent engine.

Efficiency

+40%

Sales Lift

25%

Native Android / CRMEsparkbiz

GOALS.COM

High-scale CRM mobile app for goal tracking and incentive management driving a 30% increase in sales performance. Engineered with Kotlin, MVVM architecture, Retrofit network caching, Room, and Coroutines/Flow async handling.

Kotlin CoreJetpack ComposeMVVM ArchitectureCoroutines & FlowRetrofit & RoomFirebase FCM

Engineering Impact

Optimized network and async operations (Coroutines/Flow, Isolates), cutting processing time by 25% and boosting FCM engagement by 15%.

Processing

-25% time

Sales Lift

+30%

Website

Technical Ecosystem

Mobile Engineering Skills.

A battle-tested stack spanning Native Android development and Flutter cross-platform ecosystems.

Native Android

Android Framework

Expert

Platform-level native Android architecture with Kotlin, Jetpack Compose, MVVM, ViewModel/StateFlow, and Android SDK.

Kotlin CoreJetpack ComposeMVVM ArchitectureViewModel & StateFlowKotlin CoroutinesNavigation ComposeWorkManagerLiveDataAndroid SDKJava Legacy

Cross-Platform (Flutter)

Flutter Ecosystem

Expert

Production Flutter development, custom widget architecture, reactive state management, and platform channel bridges.

FlutterDartBLoC / CubitRiverpodGetX / ProviderShorebird (OTA)Custom AnimationsAdaptive / Responsive UI

Architecture & System Design

Enterprise Logic

Expert

Clean Architecture, feature-first modularization, dependency injection, and unidirectional reactive data flow.

Clean ArchitectureFeature-First ModularizationHilt / DaggerGetIt (DI)Repository PatternSOLID Principles

APIs, Storage & DB

Data Layer

Proficient

Offline-resilient data layers, Room/SQLite local databases, GraphQL/REST clients, and real-time backend sync.

RetrofitRoom DBDataStoreGraphQL (Apollo)Firebase (Auth, FCM)Supabase / PostgreSQLHive / SQLite

Testing, DevOps & Quality

Testing & Delivery

Proficient

Automated testing discipline, performance profiling, baseline profiles, and automated CI/CD release pipelines.

JUnit & EspressoCompose UI TestingWidget & Unit TestingAndroid Studio ProfilerLayout Inspector & Baseline ProfilesGitHub Actions & GradlePlay Store & App Store Deployment

AI & Engineering Tools

Developer Velocity

Proficient

AI-assisted workflows, code generation, and modern developer tooling for accelerated delivery.

ClaudeAntigravityCursorGeminiFigma to ComposeGit / GitHub Workflows

Engineering Lifecycle

Professional Journey.

Production Android & Flutter delivery, enterprise execution, and platform-level engineering presented in a clear timeline.

Career Focus

Native Android (Kotlin, Compose), Flutter architecture, and enterprise delivery.

15+ production applications95% on-time release rateNative Android & Flutter mastery

Stage 01Sep 2023 - Present

Senior Mobile Developer (Android & Flutter)

Esparkbiz

Architected and shipped multiple production apps using Clean Architecture (MVVM) and feature-first modularization, cutting dev time by 20% and sustaining a 95% on-time release rate

Drove adoption of unidirectional, reactive state management (ViewModel + StateFlow/Coroutines on Android & BLoC/Cubit in Flutter), improving testability and code review quality

Translated Figma mockups into pixel-perfect, responsive UIs with 60fps smoothness using Jetpack Compose and custom Flutter animations

Integrated REST/GraphQL APIs, Supabase, and Firebase (Auth, Firestore, FCM) behind a repository-layer abstraction for offline resilience (Retrofit + Room natively on Android)

Established GitHub Actions CI/CD pipelines for automated linting, unit/UI testing, and staged production releases across Gradle and Flutter build systems

Stage 02Jan 2023 - Sep 2023

Software Developer Intern

Esparkbiz

Developed and refactored core features across production mobile applications using Agile/Git workflows, improving codebase maintainability by 30%

Optimized UI rendering pipelines and async operations, contributing to a 25% lift in user engagement within three months

Wrote comprehensive unit and UI tests (JUnit, Compose UI testing, Flutter widget tests) as part of the team's quality-first discipline

Stage 03Jun 2021 - Dec 2022

Independent Mobile Developer

Native Systems / Freelance

Architected native Android modules and components using Kotlin/Java, establishing a strong platform-level foundation

Built multi-platform MVP modules for freelance clients, mastering native platform channel bridges and cross-platform integrations

Researched and implemented modern UI patterns in Jetpack Compose to streamline cross-platform UI consistency

Awards & Recognitions

Milestones & Badges.

Recognitions and certifications earned through competitive coding, hackathons, and technological challenges.

GitHub & DEV Community

GitHub Copilot "Finish-Up-A-Thon" Challenge

Challenge Completion Badge

Earned for successfully reviving and completing a side project using GitHub Copilot to optimize development productivity, code quality, and problem-solving velocity. This hackathon challenged developers globally to build high-quality software utilizing advanced AI-assisted engineering workflows.

AI-assisted software engineering

Rapid side-project revival & MVP

Enhanced workflow efficiency

DEV Community published journey

View Badge on DEV Profile Read LinkedIn Post

DEV Community

DEV Weekend Challenge Completion

Weekend Challenge Award

Awarded for completing a Weekend Challenge. Thank you for participating! 💻

Weekend coding challenge

DEV Community participant

Rapid prototyping & implementation

Active developer engagement

View Badge on DEV Profile

Proof of Work

Shipped to Real Users.

Not just prototypes — apps live on the App Store and Google Play, used by thousands in production.

Live in production

Production-grade apps trusted on the stores and inside enterprise teams at Esparkbiz.

4.8★

App Store rating

10K+

Active users

15+

Apps shipped

App stores live

Download on the App Store

Dyshez

4.8

Get it on Google Play

Dyshez

4.8

Visit the live website

Goals.com

Recent Repositories

Digital Foundations.

Curated architectural modules and production-grade repositories designed for scalability.

49+

Repositories

8k+

Code Commits

Follow my ecosystem on GitHub

orbit

JavaScript

Orbit is a private, self-hosted operating system for developers — built to replace the 6+ tools a typical developer juggles daily. Projects, tasks, notes, secrets, time tracking, email templates, and developer utilities — all in one fast, keyboard-first interface.

Private

snap_mind

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

pocket_score

Dart

Pocket Score is a premium cricket scoring app featuring a sleek "Midnight Studio" design. It offers intuitive match setup, ball-by-ball scoring, and real-time state persistence. Users can manage players, track career stats, and view detailed historical scorecards. Designed for box cricket, it blends pro-grade logic with a high-end UI.

Private

secret_vault

Dart

A local-first, AES-256 encrypted secrets manager built with Flutter. Featuring a secure browser extension for auto-fill, biometric-ready architecture, and zero-knowledge security.

Private

split_ease

Dart

A premium bill-splitting and expense-tracking app built with Flutter and Supabase, featuring Clean Architecture and real-time synchronization.

Private

Work With Me

Mobile Engineering Services.

Whether launching a new mobile app, scaling an existing codebase, or integrating native platform modules — here is how I deliver.

Native & Cross-Platform App Dev

End-to-end mobile apps built with Native Android (Kotlin, Jetpack Compose) or Flutter — from architecture to store launch.

Native Android (Kotlin)Flutter iOS & AndroidStore submissions

Mobile Architecture & Code Audits

Clean Architecture (MVVM) implementation, state management refactoring, and quality audits for mobile applications.

Clean Architecture (MVVM)StateFlow / BLoC auditCodebase refactoring

Native Integration & Platform Bridges

Integrating native Android services (Retrofit, Room, FCM) with Flutter via Platform Channels, or native module integration.

Platform channel bridgesNative Android modulesZero-downtime rollout

MVP & Rapid Mobile Delivery

Validate your vision fast with a production-grade mobile prototype — built to scale seamlessly into your core product.

Production MVPScalable architectureFast iteration

Available for freelance

Have a project in mind? Let's scope it together.

Book a call Send a message

Transmission Link

Let's Build Something Extraordinary.

Whether you have an app idea, need technical consulting, or want to collaborate on open-source, I'm all ears.

Get in Touch.

Ready to architect your next high-performance mobile ecosystem. I typically respond within one business cycle.

Direct Communication

javiyaraj4@gmail.com

linkedin.com/in/javiyaraj

GitHub

github.com/JAVIYARAJ

Book a Call

Schedule a free 30 min