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Hi, I'm OKOROACHUKWU UGOCHUKWU MARTINS, a Mobile Application Developer with 3+ years of Flutter experience in fintech, HR, and e-commerce. I shipped 6+ production releases for Android and iOS, reaching 100k+ cumulative users with an average rating around 4.6 and a crash rate below 0.8%. At Sterling Bank, I streamlined KYC onboarding and wallet-to-account migrations for 50k+ users, and built PCI DSS–compliant card lifecycle features. I introduced CI/CD via GitHub Actions and Fastlane to speed up releases by 40%, and instrument analytics with Firebase Analytics/Crashlytics to drive improvements. I enjoy collaborating across teams to deliver secure, scalable fintech apps.…Hi, I'm OKOROACHUKWU UGOCHUKWU MARTINS, a Mobile Application Developer with 3+ years of Flutter experience in fintech, HR, and e-commerce. I shipped 6+ production releases for Android and iOS, reaching 100k+ cumulative users with an average rating around 4.6 and a crash rate below 0.8%. At Sterling Bank, I streamlined KYC onboarding and wallet-to-account migrations for 50k+ users, and built PCI DSS–compliant card lifecycle features. I introduced CI/CD via GitHub Actions and Fastlane to speed up releases by 40%, and instrument analytics with Firebase Analytics/Crashlytics to drive improvements. I enjoy collaborating across teams to deliver secure, scalable fintech apps.

OKOROACHUKWU UGOCHUKWU MARTINS

Developer, Programmer, App Developer, +4

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Hi, I'm OKOROACHUKWU UGOCHUKWU MARTINS, a Mobile Application Developer with 3+ years of Flutter experience in fintech, HR, and e-commerce. I shipped 6+ production releases for Android and iOS, reaching 100k+ cumulative users with an average rating around 4.6 and a crash rate below 0.8%. At Sterling Bank, I streamlined KYC onboarding and wallet-to-account migrations for 50k+ users, and built PCI DSS–compliant card lifecycle features. I introduced CI/CD via GitHub Actions and Fastlane to speed up releases by 40%, and instrument analytics with Firebase Analytics/Crashlytics to drive improvements. I enjoy collaborating across teams to deliver secure, scalable fintech apps.…Hi, I'm OKOROACHUKWU UGOCHUKWU MARTINS, a Mobile Application Developer with 3+ years of Flutter experience in fintech, HR, and e-commerce. I shipped 6+ production releases for Android and iOS, reaching 100k+ cumulative users with an average rating around 4.6 and a crash rate below 0.8%. At Sterling Bank, I streamlined KYC onboarding and wallet-to-account migrations for 50k+ users, and built PCI DSS–compliant card lifecycle features. I introduced CI/CD via GitHub Actions and Fastlane to speed up releases by 40%, and instrument analytics with Firebase Analytics/Crashlytics to drive improvements. I enjoy collaborating across teams to deliver secure, scalable fintech apps.

Available to hire

Hi, I’m OKOROACHUKWU UGOCHUKWU MARTINS, a Mobile Application Developer with 3+ years of Flutter experience in fintech, HR, and e-commerce. I shipped 6+ production releases for Android and iOS, reaching 100k+ cumulative users with an average rating around 4.6 and a crash rate below 0.8%.

At Sterling Bank, I streamlined KYC onboarding and wallet-to-account migrations for 50k+ users, and built PCI DSS–compliant card lifecycle features. I introduced CI/CD via GitHub Actions and Fastlane to speed up releases by 40%, and instrument analytics with Firebase Analytics/Crashlytics to drive improvements. I enjoy collaborating across teams to deliver secure, scalable fintech apps.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Mobile Application Developer at Sterling Bank Nigeria Plc

February 1, 2022 - Present

Developed and maintained Active-8, a fintech application for utility bill payments, wallet funding, and virtual card creation. Implemented card management features, including card creation, blocking, and transaction history tracking. Contributed to the development of Alt-Bank v3, enabling interbank transactions, bill payments, and virtual card management. Enhanced user onboarding and investment management features in Alt-Invest, facilitating seamless fund migration from wallets to bank accounts.

Mobile Application Developer at ICIT Solutions

February 1, 2022 - Present

Developed Quanto, a search engine application enabling users to search for products using image recognition, filter results, and make payments. Contributed to Eko One, a comprehensive business tool, by enhancing its web and mobile interfaces. Built a C# console application for batch conversion of TFF files to PDF and automated uploads to SharePoint. Developed APIs for Work Market, a web application connecting technicians with clients in the USA, including ticket creation, assignment, and status tracking.

Mobile Application Developer at Glassgate Ltd Nigeria

August 1, 2021 - October 18, 2025

Designed and developed the Federal Polytechnic Alumni Association webpage using HTML, CSS, JavaScript, and .NET Core 5. Ensured responsive design and seamless user experience across devices.

Mobile Application Developer at Xceed365 Nigeria Ltd

January 1, 2021 - October 18, 2025

Developed Xceed365 HR Management App using .NET and Xamarin Forms, featuring clock-in/out, loan applications, and leave management. Implemented best practices such as MVC architecture and Agile methodologies to ensure scalable and maintainable code.