Available to hire
Hi, I am Emmanuel Nnanna Ajah, a Flutter and mobile developer with 2+ years of remote experience building cross-platform apps for iOS and Android, with a strong focus on fintech and Web3. I thrive in remote Agile environments and enjoy turning complex designs into smooth, production-ready interfaces.
I have a track record of reducing app crashes by 95% and improving performance by 60% through code optimization and architectural improvements. I have deployed two apps to Google Play Store and contributed to 4+ production mobile applications.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
French
Intermediate
Spanish; Castilian
Intermediate
Work Experience
Mobile Developer Contract (Flutter/Dart) at Nanocodes Programming Limited
September 1, 2024 - January 31, 2025Developed a fast, fine-tuned, and secure peer-to-peer (P2P) web3 application by transforming Figma designs into pixel-perfect and functional screens. Implemented performance and memory-efficiency mechanisms including reusable widgets and const-optimized components. Integrated third-party backend APIs with auto-retries and token-session handling. Improved widget rendering by over 90% by optimizing build methods. Added pagination for large datasets, multi-threading via isolates, real-time bidirectional chat with websockets, and face authentication against government IDs. Successfully deployed the app to Google Play Store.
Mobile Developer Contract (Flutter/Dart) at MealTrips
June 1, 2024 - September 30, 2024Collaborated with developers and backend engineers to develop the vendor side of the MealTrips application. Converted Figma designs into responsive, adaptive, and optimized screens while mitigating performance bottlenecks and UI blockage. Integrated backend APIs and implemented network image-caching with CachedNetworkImage. Monitored crashes using Firebase Crashlytics, integrated One-Signal for notifications, and managed multi-threading with isolates. Actively participated in daily stand-ups to discuss progress and resolve issues. Contributed to the full development and deployment lifecycle.
Junior Mobile Developer (Flutter/Dart) at AgroMall Discovery and Extension Limited
April 1, 2024 - August 31, 2024Overhauled a bug-ridden application reducing frame drops by 45% and crashes by over 85%. Extracted and optimized over 100 widgets, replaced null assertions with null-aware operators, and reduced setState calls with state provider/consumer. Used locking and debouncing techniques for race conditions and event flooding, and moved expensive tasks to isolates to improve performance.
Mobile developer intern (Flutter/Dart) at CodSoft
February 1, 2024 - March 31, 2024Collaborated with cross-functional teams to engineer efficient mobile solutions by developing screens from Figma designs, handling asynchronous API calls, and participating in daily stand-ups. Contributed throughout the full app development lifecycle.
Mobile Developer Contract (Flutter/Dart) at Nanocodes Programming Limited
September 1, 2024 - January 31, 2025Developed a fast, fine-tuned, and secure peer-to-peer (P2P) web3 mobile application. Transformed Figma designs into pixel-perfect and functional screens with memory-efficiency optimizations. Integrated third-party APIs with auto-retries and token-session handling. Achieved over 90% widget rendering and performance optimization by eliminating computations within build methods. Implemented pagination, multi-threading using isolates, real-time bidirectional chat via websockets, and face authentication using third-party services. Successfully deployed the app to the Google Play Store.
Mobile Developer Contract (Flutter/Dart) at MealTrips
June 1, 2024 - September 30, 2024Collaborated with developers and backend engineers to develop the vendor side of the MealTrips application. Converted Figma designs to responsive and optimized screens with performance bottleneck mitigation. Integrated backend APIs with network image caching and crash monitoring via Firebase Crashlytics. Integrated real-time and local notification services using One-Signal and awesome_notification. Implemented multi-threading using isolates, participated in daily stand-ups, and contributed to full development and deployment lifecycle.
Junior Mobile Developer (Flutter/Dart) at AgroMall Discovery and Extension Limited
April 1, 2024 - August 31, 2024Overhauled a bug-ridden application with a senior developer and backend engineers, reducing frame drops by 45% and crashes from 20 to 3 per month. Extracted nested widgets and reusable components, replaced null assertions with null-aware operators, reduced unnecessary setState calls with state provider/consumer, handled race conditions using lock and debouncing, and moved expensive tasks to isolates to improve performance and stability.
Mobile developer intern (Flutter/Dart) at CodSoft
February 1, 2024 - March 31, 2024Collaborated with cross-functional teams to engineer mobile solutions. Developed screens from Figma designs, handled asynchronous API calls with FutureBuilder, participated in daily stand-ups, and contributed to the full app development lifecycle.
Mobile Developer Contract (Flutter/Dart) at Nanoqodes Programming Limited
January 31, 2025 - September 18, 2025Developed a secure peer-to-peer Web3 mobile application; converted Figma designs into functional UIs; integrated third-party APIs with auto-retry and token session management; improved widget rendering by reducing build-time computations; implemented real-time bidirectional chat with WebSocket; biometric verification (NIN/BVN) for government ID; reduced jank with Dart isolates; deployed to Google Play.
Mobile Developer Contract (Flutter/Dart) at Meal Trips
September 30, 2024 - September 18, 2025Collaborated in a 4-person team to build a vendor-side mobile app; translated Figma designs into performant screens; robust token-based session handling for API calls; reduced API calls by 20% with local caching; sped up image loading with caching; integrated Firebase Crashlytics and Analytics, OneSignal push notifications, and local notifications; applied multi-threading with Dart isolates for background processing.
Junior Mobile Developer (Flutter/Dart) at Agro Mall Discovery and Extension Limited
August 31, 2024 - September 18, 2025Refactored a legacy app under a senior developer; moved heavy computations to Dart isolates to reduce frame drops by 45%; reduced crashes from 40 to 2 using null-aware operators and default values; modularized 200+ nested widgets for readability and maintainability; minimized unnecessary rebuilds with targeted state management and debouncing to improve UX by 40%.
Mobile Developer Intern (Flutter/Dart) at CodSoft
March 1, 2024 - September 18, 2025Built responsive mobile UIs from Figma using Flutter layout best practices; integrated REST APIs with FutureBuilder for real-time content rendering; collaborated in Agile sprints and delivered features within weekly milestones; participated in peer code reviews and maintained clean, scalable code.
Mobile Developer (Flutter/Dart) at Nanocodes Programming Limited
January 1, 2025 - September 18, 2025Developed a secure peer-to-peer Web3 mobile application using Flutter and Dart; translated Figma designs into functional mobile UIs; integrated third-party APIs with auto-retrieval mechanisms and token/session management; implemented real-time bidirectional chat via WebSocket; added biometric authentication for government ID verification (NIN/BVN); reduced jank and improved performance via Dart isolates; deployed the app to Google Play.
Mobile Developer (Flutter/Dart) at MealTrips Vendor
September 1, 2024 - September 18, 2025Collaborated in a 4-person team to build a vendor-side mobile app; converted Figma designs into optimized screens with performance considerations; integrated backend APIs with robust token-based session handling; reduced API calls by 20% and improved UX through local caching of vendor data; reduced image loading time by 30% via image caching; implemented Firebase Crashlytics, Firebase Analytics, and push/local notifications; introduced Dart isolates for background processing and ensured thorough pre-release testing.
Junior Mobile Developer (Flutter/Dart) at Agro Mall Discovery and Extension Limited
August 1, 2024 - September 18, 2025Worked under a senior developer to refactor a legacy app with performance issues; moved heavy computations away from build methods into a view model and Dart isolates, reducing frame drops and UI janks by 45%; decreased monthly crashes from 40 to 2 by replacing null assertions with null-aware operators and default values; modularized 200+ nested widgets into reusable components; improved UI responsiveness with debouncing and targeted rebuilds.
Mobile Developer (Contract) - Flutter/Dart at Nano Codes Programming Limited
January 1, 2025 - September 22, 2025Developed secure peer-to-peer Web3 mobile application using Flutter and Dart; converted Figma designs into functional mobile interfaces; integrated third-party APIs with auto-retry mechanisms and token session management; achieved 90% widget rendering improvement by eliminating computations in build methods; improved scroll performance and device memory efficiency by implementing pagination for large datasets; implemented real-time bidirectional chat via WebSocket; integrated biometric face authentication for government ID verification (NIN/BVN); reduced jank by 45% through multi-threading with Dart isolates and compute; deployed application to Google Play Store.
Mobile Developer Contractor - Flutter/Dart at MealTrips
September 1, 2024 - September 22, 2025Worked in a four-person development team to build a vendor-side mobile application; converted Figma designs into functional screens with performance optimization; implemented robust token session handling and API integration; reduced API calls by 20% and improved UX via local caching of essential vendor data; reduced image loading time by 30% using image caching; implemented Firebase Crashlytics for crash monitoring, analytics, and push/local notifications; implemented multi-threading for background processing; participated in pre-release testing and bug fixes.
Junior Mobile Developer (Flutter/Dart) at Agro Mall Discovery and Extension Limited
August 1, 2024 - September 22, 2025Refactored a legacy application to reduce frame drops and UI janks by moving heavy computations away from the build method to a view model and Dart isolates; decreased crashes by enabling null-safety and proper state management; modularized 200+ nested widgets into reusable components; minimized unnecessary widget rebuilds by 90% and improved performance; enhanced user experience by 40% through debouncing and locking to handle race conditions.
Mobile Developer Contract (Flutter/Dart) at Nano Codes Programming Limited
January 31, 2025 - September 25, 2025Developed secure peer-to-peer Web3 mobile applications using Flutter and Dart; converted Figma designs into functional mobile interfaces; integrated third-party APIs with auto-retry mechanisms and token session management; improved widget rendering by 90% by moving heavy computations out of build methods; achieved 30% scroll performance and 50% device memory efficiency through a pagination system; implemented real-time bidirectional chat via WebSocket; added biometric authentication for government ID verification; deployed to Google Play Store.
Mobile Developer Contract (Flutter/Dart) at MealTrips
September 30, 2024 - September 25, 2025Collaborated in a 4-person team to build a vendor-side mobile application; converted Figma designs into performant screens with optimization; reduced API calls by 20% via local caching of essential vendor data; reduced image loading times by 30% through image caching; implemented Firebase Crashlytics for crash monitoring, Firebase Analytics for usage analytics, and push/local notifications with OneSignal and awesome_notifications; introduced multi‑threading with Dart isolates for background processing; participated in pre-release testing and bug fixes.
Junior Mobile Developer (Flutter/Dart) at Agro Mall Discovery and Extension Limited
August 31, 2024 - September 25, 2025Refactored a legacy Flutter application to reduce frame drops and UI jank by moving expensive computations to Dart isolates; eliminated null assertions with null-aware operators; extracted 200+ nested widgets into modular reusable components; minimized unnecessary rebuilds via targeted state management; improved overall UX by ~40% with debouncing and race-condition handling.
Mobile Developer Intern at CodSoft
March 31, 2024 - September 25, 2025Built responsive mobile UIs from Figma designs using Flutter layout best practices; integrated REST APIs using FutureBuilder for real-time content rendering; collaborated in Agile sprints and delivered features to weekly milestones; participated in peer code reviews and bug fixes to improve readability and performance.
Mobile Developer Intern at CodSoft
December 31, 2018 - September 25, 2025Earlier internship experience focusing on mobile UI construction, API integration, and feature delivery in an Agile environment with emphasis on UI responsiveness and reliability.
Mobile Developer Contract (Flutter/Dart) at Nano Codes Programming Limited
January 31, 2025 - September 25, 2025Developed secure peer-to-peer Web3 mobile application using Flutter and Dart; converted Figma designs into functional mobile interfaces; integrated third-party APIs with auto-retry mechanisms and token session management; achieved 90% widget rendering improvement by moving heavy computations out of build methods; improved scroll performance by 30% and device memory efficiency by 50% via a pagination system for large datasets; implemented real-time bidirectional chat using WebSocket; biometric face authentication for government ID verification; reduced janks with multi-threading using Dart isolates and compute functions; deployed to Google Play Store.
Mobile Developer Contract (Flutter/Dart) at Meal Trips
September 30, 2024 - September 25, 2025Collaborated in a 4-person team to build a vendor-side mobile application; refactored designs into performant UIs; reduced API calls by 20% and improved UX through local caching of vendor data using Hive; reduced image loading time by 30% via image caching with CachedNetworkImage; integrated Firebase Crashlytics for crash monitoring and Firebase Analytics for user activity tracking; implemented multi-threading for background processing and ensured smooth user interactions.
Junior Mobile Developer (Flutter/Dart) at Agro Mall Discovery and Extension Limited
August 31, 2024 - September 25, 2025Refactored legacy application to reduce frame drops and UI janks by 45% by moving heavy computations to Dart isolates; replaced null assertions with null-aware operators, reducing crashes; modularized 200+ nested widgets into reusable components; minimized unnecessary widget rebuilds by 90% and improved UX with debouncing and targeted rebuilds to handle race conditions.
Mobile Developer Intern (Flutter/Dart) at CodSoft
January 1, 2018 - PresentBuilt responsive mobile UIs from Figma designs using Flutter layout best practices; integrated REST APIs using FutureBuilder for real-time content rendering; collaborated in Agile sprints and delivered features weekly; participated in peer code reviews and maintained clean, scalable code; contributed to pre-release testing and bug fixing.
Mobile Developer Intern (Flutter/Dart) at CodSoft
March 1, 2024 - September 25, 2025Built responsive mobile UIs from Figma designs using Flutter layout best practices; Integrated REST APIs with FutureBuilder for real-time content rendering; Collaborated in Agile sprints and delivered features to weekly milestones; Participated in peer code reviews and daily stand-ups, applying team feedback to improve readability and performance; Implemented and tested new features ensuring UI responsiveness and reliability.
Mobile Developer (Flutter/Dart) - Contract at Nano Codes Programming Limited
January 1, 2025 - September 26, 2025Developed a secure peer-to-peer Web3 mobile application using Flutter and Dart; converted Figma designs into functional mobile interfaces; integrated third-party APIs with auto-retry mechanisms and token session management; improved widget rendering by reducing computations in build methods; enhanced scroll performance and device memory efficiency via pagination for large datasets; implemented real-time bidirectional chat using WebSocket; added biometric face authentication for government ID verification (NIN/BVN); reduced jank through multi-threading with Dart isolates and compute functions; deployed the app to Google Play Store.
Mobile Developer Contract (Flutter/Dart) at MealTrips
September 1, 2024 - September 26, 2025Collaborated in a 4-person team to build a vendor-side mobile application; translated Figma designs into performant screens; implemented robust token session handling and back-end API integration; reduced API calls by 20% through local caching of vendor profile data; improved image loading times via image caching; integrated Firebase Crashlytics for crash monitoring, Firebase Analytics, OneSignal push notifications, and local notifications; implemented multi-threading for background processing; ensured quality via pre-release testing and bug fixes.
Junior Mobile Developer (Flutter/Dart) at Ago Mall Discovery and Extension Limited
August 1, 2024 - September 26, 2025Refactored a legacy application under the guidance of a senior developer; reduced frame drops and UI janks by 45% by moving expensive computations out of build methods into a view model and Dart isolates; decreased crashes from 40 to 2 by adopting null-safety and replacing null assertions; modularized 200+ nested widgets into reusable components; minimized unnecessary widget rebuilds by 90% via localized rebuilds and selective state management; improved user experience by 40% through debouncing and locking to handle race conditions.
Mobile Developer Intern (Flutter/Dart) at CodSoft
March 1, 2024 - September 26, 2025Built responsive mobile UIs from Figma designs using Flutter; integrated REST APIs using FutureBuilder for real-time content rendering; collaborated in Agile sprints and delivered features to weekly milestones; participated in peer code reviews to improve readability and performance; implemented and tested new features, ensuring UI responsiveness and reliability.
Education
Senior Secondary Certificate at Model Anglican High School, Amechi Awkunanaw
January 1, 2018 - December 31, 2018B.Engr at University of Nigeria Nsukka
January 1, 2018 - December 31, 2023Senior Secondary Certificate at Model Anglican High School, Amechi Awkunanaw
January 1, 2018 - December 31, 2018Electronic and Computer Engineering (B.Engr) at University of Nigeria Nsukka
January 1, 2018 - December 31, 2023B.Engr in Electronic and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - September 18, 2025Senior Secondary Certificate at Anglican High School, Amechi Awkunanaw
January 11, 2030 - September 18, 2025B.Engr in Electronic and Computer Engineering at University of Nigeria Nsukka
January 11, 2030 - September 18, 2025Senior Secondary Certificate at Model Anglican High School, Amechi Awkunanaw
January 11, 2030 - September 18, 2025Bachelor of Engineering (B.Engr) in Electrical and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - September 22, 2025Senior Secondary Certificate at Model Anglican High School, Awkunanaw
January 11, 2030 - September 22, 2025Bachelor of Engineering (B.Eng) in Electronic and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - September 25, 2025B.Engr at University of Nigeria Nsukka
January 11, 2030 - September 25, 2025Bachelor of Engineering in Electronic and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - September 25, 2025Senior Secondary Certificate at Anglican High School, Amaechi Awkunanaw
January 11, 2030 - September 25, 2025B.Eng in Electronic and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - September 26, 2025Senior Secondary Certificate at Anglican High School, Amechi Awkunanaw
January 11, 2030 - September 26, 2025B.Eng in Electrical and Computer Engineering at University of Nigeria, Nsukka
January 11, 2030 - December 4, 2025Senior Secondary Certificate at Model Anglican High School, Amechi Awkunanaw
January 11, 2030 - December 4, 2025Qualifications
Senior Secondary Certificate
January 11, 2030 - September 25, 2025Industry Experience
Software & Internet, Transportation & Logistics, Retail, Agriculture & Mining, Financial Services, Media & Entertainment, Professional Services, Computers & Electronics, Gaming, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Hire a App Developer
We have the best app developer experts on Twine. Hire a app developer in Nsukka today.