Fredrick O.

Mobile Developer

Full-time available

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Bio

Fredrick Obarafor is a highly skilled Software Engineer and Mobile Developer with over 4 years of experience, proficient in Dart, Kotlin, Java, Swift, JavaScript, ASP.NET, Node.js, Express.js, and Python. He has extensive expertise in mobile development using Flutter, Android SDK, Jetpack Compose, MVVM, Android UI, and React Native, as well as web technologies including HTML, CSS, TypeScript, MVC, and RESTful APIs. Fredrick also brings strong knowledge of DevOps and tools such as Git, GitHub, Firebase, Heroku, and CI/CD

  • Projects completed12
  • Hourly rate
  • 3-4 years experience
  • Member since Sep 2025
Expertise
MongoDBNodeJSFlutterJavascriptSQLCSSHTMLPythonReactTypescriptReact NativeJavaSwiftC#Database:RelationalDatabase:CacheingDatabase:DocumentFlaskGitGraphQL
Video Intro
Assessments

General Video Assessment

Great score on Manage State in Flutter with Nested Components, Difficulty Medium · Great score on Design a Real-Time Financial Data Flutter Application, Difficulty Medium · Great score on Design an Efficient API Integration Strategy for E-Commerce, Difficulty Medium

Projects

Bosscab

Bosscab is a Next-Gen transportation app that provides safe, fast and comfortable rides. Get affordable rides and pay using your in-app wallet. Wallet payments are fast, safe and secure. Request a ride to your location and get to where you need to be just in time. Real time tracking enables you see the location of your driver and helps you track and share your rides,

Lawyerpp

A lifestyle app built around the ordinary person and his everyday need for security and peace of mind for self and family in an increasingly restive and polarised society

Credo

Credo enables you to get paid, increase profits and build trust through seamless payment experiences.

SmartRR

Smart Reporting and Referral (SMART RR) is a technology based mobile application that allows survivors, social workers and service providers to report and refer cases/incidents of GBV from their smart and basic phones. The tool was developed by Big Family 360 Foundation, a national non-governmental organisation in Nigeria

Pensioners App

An application for Government pensioner

GistHouse

GistHouse Is an Audio Conversation Social Media Platform that rewards you for having conversations with people all over the world. Users from all over the world can create, engage in, and drop-in into audio-based conversations on anything about everything

Trashit

Offers professional waste management & general cleaning solutions for residential, commercial, and industrial spaces

Plugbay

PlugBay, the leading global advertising and empowerment platform that revolutionizes the way businesses connect, hire, and advertise without the need for internet connectivity, smartphones, or call/SMS credits. Our innovative yearly membership subscriptions empower three key actors, enabling them to access our real-time services seamlessly

chain gas

Order Gas at your comfort home with ease

Mycrossriver

An App for Cross River State Citizens

Bosscab Mechanic

Earn extra income as a mechanic by evaluating vehicles on the Bosscab mechanic app

Bosscab Driver

As a driver, stick to your schedule and achieve your driving goals at your own pace, you are the boss. BossCab has also formed strategic partnerships geared towards providing vehicles for spirited and goal-oriented individuals who need that “so much needed” extra income to support their families, and pay tuition or rent. Register a driver account today and drive to earn some extra money

Experience
  1. Mobile Developer

    TrashitJan 2025Present
    • Published Apple Store app and resolved bugs efficiently
    • Improved user experience scores by 35% through creative interface design based on trends.
    • Collaborated with teams regarding technical issues, software system design and maintenance.
    • Supervise system infrastructure to ensure functionality and efficiency.
    • Ensure and understanding of the system and transfer the technology to the in-house team.
    KotlinSwiftApisReact nativeNodejs, ExpressjsFlutter Dart
  2. Mobile Developer

    EmplugDec 2024Mar 2025
    • Integrated APIs and optimized app performance
    • Published Apple Store app and resolved bugs efficiently
    • Create responsive front-end mobile application interfaces according to design guideline and information architecture.
    • The algorithm implemented handles the routing of requests and actions to the appropriate application.
    • Evaluate and implementing new functional Apis
    Flutter, DartApis
  3. CTO / Mobile Developer

    ChianFeb 2024Nov 2024
    • Led tech strategy and oversaw infrastructure upgrades
    • Managed cross-functional teams and ensured quality code delivery
    • Develop technical aspects of the company strategy to ensure alignment with its business goals
    • Discover and implements new technologies that yield competitive advantage
    • Build quality assurance and data protection processes
    Flutter, DartNodejsKotlinSwiftApis
  4. Mobile Developer

    GleeWorldOct 2023Apr 2024
    • Built pharmacy apps; improved UX by 50%
    • Integrated APIs and optimized app performance
    • Wrote clean, clear and well-tested code for the projects GleeWorld pharmacy
    • Optimized performance through troubleshooting and debugging.
    • Create responsive front-end mobile application interfaces according to design guideline and information architecture.
    Flutter, DartNodejsRetrofitApis
  5. Mobile Developer

    GamintApr 2023Nov 2023
    • Developed fingerprint SDK for pensioner app
    • Designed UI components using best practices
    • I developed an SDK than scans fingerprints (4 in number) saved in a format that can be verified by the SDK of the device
    • Developed quality assurance procedure such as and to minimize coding errors.
    • Built a long-term road map for pensioner applications.
    Android native, Retrofit, ApisJava
  6. Software Consultant

    GamintMar 2023Apr 2023
    • Guided dev team on software compliance and quality delivery
    • Designed and tested secure client systems
    • Completed projects on time and within budget by collaborating with contractors, architects and public authorities
    • Provide guidance and mentoring to ensure high-quality deliverable and efficient workflow
    Android Native, Java
  7. Senior Flutter Developer

    Big-family-360 FoundationJan 2023Apr 2023
    • Published Apple Store app and resolved bugs efficiently
    • Launched the tested project to the Apple store.
    • Produced clean, error-free code in line with internal quality standards.
    • Researched software requirements to overcome potential constraints and produce feasible designs.
    • Built simulation system to model designs, informing development decisions.
    Flutter, Dart, Retrofit, ApisSwiftKotlin
  8. Mobile Developer

    Mobisoft360 (GistHouse)May 2022Present
    • Built Flutter app for social audio platform
    • Produced clean, error-free code in line with internal quality standards.
    • Built simulation system to model designs, informing development decisions.
    • Collaborated with cross-functional development teams to raise technical standards for ongoing projects.
    • Oversaw programming and quality assurance functions for software team.
    • Reviewed, validated and automated testing to improve code quality.
    Flutter, Dart, ApisSwiftKotlin
  9. Software Developer

    NugitechJul 2021Nov 2022
    • Led API development and rebuilt software systems
    • Implemented system testing and validation guideline.
    • Trained team to develop skill using software application and hardware.
    • Modified existing software to upgrade interface and elevate performance.
    • Collaborated with teams regarding technical issues, software system design and maintenance.
    • Formulated report on programming projects specifications, activities and development.
    Java, Kotlin, Retrofit, Monify, PayStackAndroid native
  10. Technology Officer

    TrackHub HealthJan 2021Dec 2021
    • Developed admin dashboard, backend, and mobile logistics app
    • Managing a team of developers and designers during creation of the company software project development.
    • The project included the development of the following, an Admin frontend web interface application that served as the platform where the company staff handles partners management process orders, receive and provide support to clients, onboard new partners and monitor the performance metrics of stakeholders
    • Connects and ensure data persistence using the database.
    React, Apis, Nextjs
  11. IT System Administrator

    Excellent BridgeNov 2017Jan 2018
    • Maintained Windows servers, backups, and upgrades
    • Used support tools to manage and control remote devices.
    • Set up and managed Microsoft remote desktop server for remote access need.
    • Implemented and configured Microsoft Exchange 2010, facilitating efficient email communication.
    • Successfully execute migration tasks for Microsoft active directory, ensuring minimal disruption.
    Windows ServerData BaseNetworking
Education
  1. BSc - Information Technology & Business Information Systems

    Middlesex University, Mauritiusflic-en-flac, Mauritius2020 — 2021
  2. Advanced Certificate - Software Engineer

    National Institute of Information Technology (NIIT)Port Harcourt, Rivers, Nigeria2017 — 2017
  3. Honors Diploma - Software Engineer

    National Institute of Information Technology (NIIT)Port Harcourt, Rivers, Nigeria2017 — 2018
  4. Advanced Diploma - Software Engineer

    National Institute of Information Technology (NIIT)Port Harcourt, Rivers, Nigeria2018 — 2019
  5. Professional Diploma - Software Engineer

    National Institute of Information Technology (NIIT)Port Harcourt, Rivers, Nigeria2019 — 2019
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