● Lead the development of mobile banking platforms and merchant ecosystem applications serving retail and business customers. ● Successfully developed, deployed, and maintained two end-to-end mobile banking applications for the third largest bank in Tanzania, supporting both retail customers and merchant businesses. ● Designed and implemented secure authentication systems, including OTP verification, biometric authentication, and device-based security validation. ● Developed and integrated financial transaction modules, including bank transfers, mobile network transfers, digital wallets, and bill payments. ● Built the TANQR Merchant Payment System, enabling merchants to accept digital payments through QR codes and merchant till numbers. ● Architected scalable APIs and backend services supporting merchant and retail banking applications. ● Implemented advanced security features, including SSL pinning, encrypted transactions, and secure payment validation mechanisms. ● Optimized application performance using asynchronous processing, Flutter isolates, and UI performance improvements. ● Led code reviews, bug resolution, and release management across staging and production environments. ● Key project NBC KIGANJANI Digital Banking Platform: developed a complete mobile banking application for retail financial services, supported system training and onboarding before release, achieved 97% successful migration of legacy customers to the new digital platform, managed deployment and release cycles across App Store and Google Play Store, and monitored and optimized application performance for large user traffic.

● Developed and maintained healthcare data management systems using React, TypeScript, Flutter, and DHIS2 APIs. ● Designed and implemented mobile and web applications integrated with DHIS2 platforms and SQLite databases to support national health data reporting. ● Built reusable UI components and modular front-end architectures to improve development efficiency across applications. ● Improved system performance through architecture enhancements, optimized database queries, and efficient data synchronization strategies. ● Developed Node.js automation scripts for data migration, transformation, and messaging workflows. ● Conducted testing, debugging, and performance analysis to ensure application reliability and stability. ● Participated in Agile development cycles, including sprint planning, version control with Git, and collaborative development workflows.