Available for freelance work

Hi, I'm Zakir Hossain

Crafting beautiful, performant mobile experiences. I build apps that users love, with clean architecture and pixel-perfect design.

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5+ Years Experience
25+ Apps Launched
1M+ Users Served
99% Client Satisfaction
Tech Stack

Skills & Expertise

The technologies I use to bring ideas to life

Mobile Development

  • React Native
  • Flutter
  • Swift
  • Kotlin
  • iOS
  • Android

Frontend

  • JavaScript
  • TypeScript
  • React
  • HTML5
  • CSS3
  • Tailwind CSS

Backend

  • Node.js
  • Express
  • Firebase
  • GraphQL
  • REST APIs

Tools & DevOps

  • Git
  • CI/CD
  • Docker
  • Fastlane
  • App Store Connect
  • Play Console

Testing

  • Jest
  • Detox
  • Appium
  • Unit Testing
  • E2E Testing

Architecture

  • Clean Architecture
  • MVVM
  • Redux
  • MobX
  • Riverpod
  • State Management
Portfolio

Featured Projects

A selection of apps I've designed and built

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FitTrack Pro

Featured

A comprehensive fitness tracking app with workout plans, nutrition tracking, and social features. Built with React Native and TypeScript.

React Native TypeScript Redux Toolkit Firebase Reanimated
Live Preview </> Code

TravelBuddy

Featured

Travel planning app with itinerary management, offline maps, and collaborative features for group trips.

Flutter Dart Riverpod Google Maps API Hive
View All Projects
Career

Work Experience

Where I've been and what I've built

Senior Mobile App Developer

TechCorp Inc. · San Francisco, CA

2022 - Present
  • Led the development of a React Native app serving 500K+ monthly active users
  • Improved app performance by 40% through code optimization and bundle size reduction
  • Mentored 5 junior developers and established code review best practices
  • Implemented CI/CD pipelines reducing deployment time by 60%

Mobile App Developer

StartupXYZ · New York, NY

2020 - 2022
  • Built and launched 3 production apps using Flutter with 100K+ downloads
  • Integrated payment systems, push notifications, and real-time chat features
  • Collaborated with design team to implement pixel-perfect UI/UX
  • Reduced app crash rate from 2.5% to 0.1% through comprehensive testing

Junior Mobile Developer

Digital Agency · Remote

2019 - 2020
  • Developed native iOS and Android applications for various clients
  • Worked with REST APIs and third-party SDK integrations
  • Participated in agile development process with 2-week sprints

Got an idea? I'll bring it to life.

Whether it's a new app from scratch or optimizing an existing one, let's build something great together.

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