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I am a Senior Mobile Developer with 8+ years of experience building scalable, high-performance apps for iOS and Android. I specialize in native Android development (Kotlin/Java) and cross-platform Flutter, and I have a track record of leading engineering teams, architecting robust mobile solutions, and delivering 10k+ total app downloads. I have strong expertise in modern architecture patterns, CI/CD pipelines, cloud services, and AI integrations, and I am passionate about mentoring developers and maintaining clean, maintainable code.…I am a Senior Mobile Developer with 8+ years of experience building scalable, high-performance apps for iOS and Android. I specialize in native Android development (Kotlin/Java) and cross-platform Flutter, and I have a track record of leading engineering teams, architecting robust mobile solutions, and delivering 10k+ total app downloads. I have strong expertise in modern architecture patterns, CI/CD pipelines, cloud services, and AI integrations, and I am passionate about mentoring developers and maintaining clean, maintainable code.

Joseph Okon Etim

App Developer, Full Stack Developer, Web Developer, +2

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I am a Senior Mobile Developer with 8+ years of experience building scalable, high-performance apps for iOS and Android. I specialize in native Android development (Kotlin/Java) and cross-platform Flutter, and I have a track record of leading engineering teams, architecting robust mobile solutions, and delivering 10k+ total app downloads. I have strong expertise in modern architecture patterns, CI/CD pipelines, cloud services, and AI integrations, and I am passionate about mentoring developers and maintaining clean, maintainable code.…I am a Senior Mobile Developer with 8+ years of experience building scalable, high-performance apps for iOS and Android. I specialize in native Android development (Kotlin/Java) and cross-platform Flutter, and I have a track record of leading engineering teams, architecting robust mobile solutions, and delivering 10k+ total app downloads. I have strong expertise in modern architecture patterns, CI/CD pipelines, cloud services, and AI integrations, and I am passionate about mentoring developers and maintaining clean, maintainable code.

Available to hire

I am a Senior Mobile Developer with 8+ years of experience building scalable, high-performance apps for iOS and Android. I specialize in native Android development (Kotlin/Java) and cross-platform Flutter, and I have a track record of leading engineering teams, architecting robust mobile solutions, and delivering 10k+ total app downloads.

I have strong expertise in modern architecture patterns, CI/CD pipelines, cloud services, and AI integrations, and I am passionate about mentoring developers and maintaining clean, maintainable code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Senior Mobile Developer at Nationwide Insurance

August 1, 2025 - February 1, 2026

Maintained and enhanced a legacy Flutter codebase while implementing modern Android components; fixed critical bugs and improved app stability across iOS and Android; configured CI/CD pipelines for automated testing and deployment; integrated RESTful APIs with robust error handling and wrote comprehensive test cases; optimized app performance and reduced crashes; collaborated with cross-functional teams to resolve technical complaints from mobile app users; ensured smooth release deployments with zero downtime.

Lead Mobile Developer & IT Architect at State of Georgia Department of Education

January 1, 2025 - Present

Led mobile architecture design using MVVM, Clean Architecture, and modern Jetpack libraries; developed cross-platform applications using Flutter for iOS, Android, and tablet devices; built modern Android UI using Jetpack Compose and Material 3; integrated AI-powered chatbot for seamless customer support; implemented secure authentication systems; configured push notifications and in-app messaging; utilized state management solutions and offline-first architecture; conducted code reviews, sprint planning, and maintained technical documentation; mentored team members.

Senior Mobile Developer at Medalla, Sweden

January 1, 2022 - December 1, 2024

Designed and built cross-platform applications using Flutter with native Kotlin integration; developed high-performance Android modules; implemented secure authentication with BankID; optimized video processing and upload features using FFmpeg and native libraries; built job-matching algorithms; mentored 3 junior developers; collaborated with React.js web team to maintain cross-platform design consistency; implemented CI/CD using GitHub Actions and automated testing pipelines; worked closely with UI/UX teams to deliver polished user experiences.

Mobile Developer at KSBTech

January 1, 2021 - June 1, 2021

Designed and developed mobile UI/UX based on professional design mockups; built responsive Flutter widget trees and custom components; created native Android features using Kotlin and Java; integrated RESTful APIs for real-time data synchronization; implemented state management with Provider; conducted testing and debugging across devices; ensured consistent user experience across platforms.

Senior Software Developer at Domain Experts Group (USA)

February 1, 2020 - February 1, 2022

Migrated legacy .NET backend services to Java Spring Boot; redesigned database layer from PostgreSQL/.NET to PostgreSQL/Spring Boot; built cross-platform mobile and desktop applications using Flutter and Dart; developed native Android features for performance-critical modules; implemented CI/CD automation using Jenkins; conducted code reviews and mentored junior developers; collaborated on full-stack solutions spanning mobile, backend, and database layers.

Full Stack Developer at Payhelpa (Fintech, USA)

January 1, 2018 - December 1, 2019

Built fintech mobile app using Flutter with native Android (Kotlin) integrations; developed web platform using React and integrated with mobile services; implemented secure payment integrations and third-party APIs; used GetX for state management; GraphQL for efficient queries; converted Figma designs into production-ready Flutter and Android UI; applied Jenkins CI/CD with comprehensive integration testing; collaborated with UI/UX to deliver seamless user experiences.

Android Developer at Victory Chapel

January 1, 2017 - December 1, 2018

Developed native Android applications using Java and Kotlin; migrated codebase from Java to Kotlin during modernization; implemented Realm for local persistence; integrated RESTful APIs; deployed applications to Google Play Store; collaborated on feature updates and code reviews; utilized CI/CD tools for testing and deployment automation.

Software Mentor & Tutor at CodeHouse2

January 1, 2016 - January 1, 2017

Trained aspiring developers on core programming concepts and software design principles; created online tutorials and learning materials; mentored students on final year and personal projects; built a global online community for software development learners; assisted in curriculum development and monitoring progress.