Flutter · Dart · Java · .NET · Developer Advocate · Technical Writer
Seasoned Software Engineering Lead with 7+ years building enterprise-grade, cross-platform mobile solutions. I architect systems, lead teams, ship to production, and write about what I learn along the way.
From mobile engineer to engineering lead — a journey through fintech, telecom, logistics, and healthcare.
Led design, development and deployment of the MTN FibreX Connect Workforce Management System from day 1 to production. Architected the mobile solution, enforced TDD across the team, set up automated deployment pipelines, and mentored engineers. Also built the MTN Canvasser Agent mobile app from scratch and contributed significantly to the My Lagos App.
Contributing technical articles to freeCodeCamp — one of the world's largest developer learning platforms. Writing in-depth Flutter engineering guides covering design patterns, architecture, and best practices for a global developer audience.
Singlehandedly built the FSDH Asset Management Mobile Application from zero to production. Defined coding standards for the entire mobile team, set up automated deployment via CodeMagic, Azure, GitHub Actions and Shorebird, handled all App Store & Play Console deployments, and created internal plugins for group-wide reuse.
Worked as a fullstack engineer on GTBank's migration from BASIS to FINNACLE Core Banking. Handled GTWORLD and GAPSLITE mobile migrations, created .NET C# APIs to support the migration, collaborated with the cybersecurity team, and maintained deployment pipelines across all environments.
Grew from Mobile Software Engineer to Lead Developer. Handled end-to-end delivery of the Dangote Distributor Management System, led the mobile team, managed all frontend security implementation, and developed the AHA My Medicines healthcare application.
Built the GUO Logistics mobile application to 90% completion. Handled security implementation, codebase management, major demos with GUO executives, and began work on the E Tuition mobile application.
Built the IBOLO Microfinance Bank mobile banking application and the Denukan business solutions app. Handled NIBSS and Interswitch integrations for all interbank transactions and implemented financial security features.
Built the CLIQ Mobile Teller Application from scratch to production for ZARA Microfinance Bank. Implemented all teller collection modules, handled NIBSS and Interswitch integrations for interbank transactions, and managed full deployments from test to production.
First engineering role — started developing the SALEO MINI mobile application, applying Flutter to build responsive fintech-grade interfaces. Laid the foundation in mobile engineering best practices and keeping up with evolving concepts in the fintech sector.
A cross-platform engineer comfortable in mobile, backend, architecture, and testing disciplines.
Enterprise apps, banking systems, logistics platforms, and open-source Flutter plugins — all shipped.
End-to-end workforce management system for MTN's FibreX fibre internet rollout. Architected and led development from inception to production deployment on both app stores.
Built the Canvasser Agent mobile app from scratch to production — enabling field agents to manage customer acquisition and service provisioning on the go.
Contributed to this Lagos State super-app: code refactoring, SDK development, dependency upgrades, and setting team-wide code quality standards.
Sole developer of this investment/asset management mobile platform for FSDH Merchant Bank — from architecture to App Store & Play Store release.
Fullstack engineer on GTBank's core banking migration from BASIS to FINNACLE. Built .NET APIs, migrated GTWORLD and GAPSLITE apps, and hardened security across environments.
Led mobile delivery of Dangote's Distributor Management System — handling architecture, team coordination, security, and high-stakes client demos.
Healthcare mobile application with financial and security features — enabling users to manage medications and health transactions on a single platform.
Full mobile banking application for IBOLO Microfinance Bank — NIBSS and Interswitch integrations, financial security features, and CLIQ core banking alignment.
Built GUO Logistics' mobile platform to 90% completion on contract, managing the full development lifecycle from architecture through demos and deployment.
Detects user interaction in Flutter apps to trigger automatic logout on inactivity — a security-focused plugin for fintech and enterprise apps.
pub.dev/packages/user_interaction_detector ↗A utility plugin for building fully responsive Flutter apps using intuitive Dart extensions — makes cross-device layout simple and consistent.
pub.dev/packages/responsiveness_handler ↗Technical writing, industry commentary, and engineering guides — sharing what I've learned building real-world systems.
Open to senior engineering roles, consulting, speaking engagements, and interesting collaborations.
✉ foluwaseyi.dev@gmail.com