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Senior Flutter Developer

— Senior Flutter Developer

Flutter developer building beautiful cross-platform apps.

Developing high-performance, scalable mobile applications using Flutter and Dart, leveraging Clean Architecture to ensure maintainability and efficiency since 2021.

Explore My WorkGet in Touch
15+ Production Apps4+ Years ExperienceFreelance Available
SplitEase — Flutter expense-splitting app screenshot
FlutterDartKotlinClean ArchitectureBLoC / CubitRiverpodSupabaseFirebasePostgreSQLJetpack ComposeCI/CDShorebird OTAREST / GraphQLGetItFlutterDartKotlinClean ArchitectureBLoC / CubitRiverpodSupabaseFirebasePostgreSQLJetpack ComposeCI/CDShorebird OTAREST / GraphQLGetIt
Professional Vision

Clean Flutter Architecture.

I believe in building software that is as beautiful under the hood as it is on the surface. My approach centers on modularity, testability, and deterministic state management.

Performance Optimization

Maximizing frame rates and minimizing resource overhead.

Clean Architecture

Separating concerns for maintainable and scalable codebases.

Cross-Platform Mastery

Seamlessly targets iOS, Android, and Web with zero compromise.

CI/CD Automation

Robust deployment pipelines for reliable app deliveries.

Verified Metrics

Impact by Numbers.

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

Production Grade

0+

DEPLOYED APPS

Efficiency Lift

0%

DEV VELOCITY

Stability Index

0.0%

CRASH-FREE

Industrial Tenure

0+

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 Flutter Projects.

Real-world applications engineered for performance, used by thousands of active users.

Developer OS / ProductivityPersonalIn Development

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

6+

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

pub.dev
FinTech / Social ExpensePersonal

SPLITEASE

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

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

DYSHEZ

Developed a scalable food delivery app with an intuitive UX and Supabase-powered backend. Features include real-time order handling and a custom Rewards system.

FlutterSupabaseReal-time SDKClean ArchitectureCI/CDSentryPosthogClarity (Heatmap)

Engineering Impact

Engineered a 30% increase in repeat orders via modular loyalty logic.

Scale

10K+

Rating

4.8

App StorePlay Store
Sales / ProductivityEsparkbiz

SMACKDAB

A dedicated productivity engine that boosted team efficiency by 40%. Engineered with high-performance custom calendar modules and reactive data flows.

FlutterResponsive DesignModular UIComplex LogicReactive DartSales Intelligence

Engineering Impact

Transformed sales workflow into a mobile-first intelligent engine.

Efficiency

+40%

Lift

25%

Native Android / CRMEsparkbiz

GOALS.COM

GOALS.COM

High-scale CRM for goal tracking and incentive management. Reduced processing time by 25% through advanced async optimization and network caching.

KotlinMVVM ArchitectureRetrofitGlideFirebaseEnterprise SDK

Engineering Impact

Optimized network layer resulting in 30% faster data availability.

Speed

+25%

Growth

30%

Website
Technical Ecosystem

Flutter & Cross-Platform Skills.

A battle-tested set of technologies designed for performance, stability, and extreme scale.

Framework Core

Ecosystem

Expert

Flutter ecosystem, adaptive UI systems, testing, and modular design for product-grade apps.

FlutterDartModular DesignMaterial UI / Cupertino WidgetsResponsive UI / Adaptive DesignSolid principlesCustom AnimationUnit TestingWidget TestingIntegration Testing

Logic Engine

Enterprise Logic

Expert

State management and architectural patterns built for maintainable, reactive application flow.

BLoC / CubitGetXRiverpodState HooksReactive FlowsClean ArchitectureDependency Injection (GetIt)

Data Systems

Real-time Persistence

Proficient

Data storage, backend integration, and synchronization across live mobile environments.

Firebase / SupabaseHive / SQLiteREST / GraphQLPostgreSQL

Native Android

Android Framework

Proficient

Platform-level Android work for native modules, bridges, background processing, and Compose.

Android SDKKotlin CoreJetpack ComposePlatform BridgesJava LegacyBackground Services / WorkManager

AI Intelligence

Advanced Intelligence

Familiar

AI-assisted tooling and workflow support for faster implementation and decision-making.

ClaudeAntigravityCursorGeminiChatGPT

Automation & DevOps

Continuous Delivery

Proficient

Release automation, OTA delivery, build systems, and store deployment operations.

Shorebird (OTA)CodemagicFastlaneGitHub ActionsPlay Store / App Store DeploymentBuild Automation & Versioning
Engineering Lifecycle

Professional Path.

Production Flutter delivery, enterprise execution, and native Android foundations presented in a clearer timeline.

Career Focus

Flutter architecture, enterprise delivery, and native Android foundations.

15+ production applications95% on-time release rateNative Android foundation
01
Stage 01Sep 2023 - Present

Flutter Developer

Esparkbiz

Leading scalable cross-platform architecture for 15+ production applications with a focus on long-term maintainability

Optimized feature delivery pipelines contributing to a 95% on-time release rate across multiple enterprise projects

Implemented refined modular design patterns reducing development time for new features by 20%

02
Stage 02Jan 2023 - Sep 2023

Software Developer Intern

Esparkbiz

Contributed to core feature refactoring that improved codebase maintainability by 30% during high-growth phase

Followed strict Agile methodologies and Git-based workflows, participating in 20+ successful sprint releases

Boosted user engagement by 25% through performance profiling and UI-pixel-perfect optimizations

03
Stage 03Jun 2021 - Dec 2022

Independent Developer

Native Systems

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

Built multi-platform MVP modules for freelance clients, mastering the bridge between Flutter and Native environments

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

Awards & Recognitions

Milestones & Badges.

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

GitHub Copilot Finish-Up-A-Thon Challenge Completion Badge
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 ProfileRead LinkedIn Post
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

2

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.

43+

Repositories

8k+

Code Commits

Follow my ecosystem on GitHub
1

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
1

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
1

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
1

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
1

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

Flutter Development Services.

Whether you're launching a new product, scaling an existing one, or untangling a legacy codebase — here's where I plug in.

Cross-Platform App Development

End-to-end Flutter apps for iOS, Android & web — from architecture and UI to App Store / Play Store launch.

Production Flutter buildPixel-perfect UIStore submission

Architecture & Code Review

Clean Architecture, state management and scalable foundations — plus audits and refactors of existing codebases.

Clean ArchitectureState managementCodebase audit

Native → Flutter Migration

Move legacy Android / iOS apps to a single, maintainable Flutter codebase without losing native performance.

Migration roadmapNative bridgesZero-downtime rollout

MVP & Rapid Prototyping

Validate your idea fast with a production-grade prototype — built to scale into the real product, not thrown away.

Working MVPScalable baseFast iteration
Available for freelance

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

Book a callSend 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

linkedin.com/in/javiyaraj

GitHub

github.com/JAVIYARAJ

Book a Call

Schedule a free 30 min