-Solved a critical technical challenge of reducing network costs by minimising duplicate requests, utilising Retrofit interceptors to cancel redundant requests, implementing built-in caching for efficient data retrieval, creating a custom container to track active requests, and optimising cache expiration times, resulting in improved app performance and efficient use of network resources.- Collaborated with hardware and firmware engineers to build and ship an IoT project, codename Nimbus, which introduced Bluetooth chips into d.light's PAYGO units, enabling customers to connect to their solar products via both d.light and non-d.light smartphones, expanding functionality and user possibilities.- Integrated Paystack and M-Pesa to facilitate seamless payments, enhancing the app's payment functionality and expanding options for users.- Led the development and launch of the customer app (v3.0), significantly improving user engagement and customer satisfaction.- Utilised SQLite for device-side caching, enabling robust offline functionality and smooth user experiences in low-connectivity environments. This allowed users to access essential features and manage accounts seamlessly even without an internet connection.-Implemented advanced features including real-time data synchronisation, push notifications using Firebase, and in-app messaging, boosting user retention by delivering timely and relevant notifications.-Designed and integrated an in-house ticketing system, saving significant costs compared to using Jira by streamlining issue tracking and project management.-Developed an analytics client for Android to collect events from the app, utilising schedulers to batch and push the events, optimising network usage and data transmission.

- Led the design and development of a mobile banking app, implementing robust features such as account management, fund transfers, bill payments, and transaction history, while ensuring compliance with security standards like PCI-DSS. This enhanced user experience and accessibility, empowering customers to manage their finances conveniently and securely from their mobile devices.-Developed and implemented key agency banking features to deliver financial inclusion for unbanked and underbanked customers in rural Africa. Enabled agents to provide essential banking services like cash deposits, withdrawals, fund transfers, and bill payments via POS devices and USSD-enabled mobile phones. This solution extended financial access and convenience to remote areas, reducing transaction costs while enhancing the bank’s reach and customer service.- Played a key role in developing a secure and user-friendly mobile banking application, ensuring compliance with industry standards and regulations such as PCI-DSS and data encryption.-Acted as a mentor to junior Android engineers, conducting regular knowledge-sharing sessions and providing guidance on best practices.- Integrating core banking , agency banking and payment solutions on Android devices and POS terminals.- Working with EMV Integrated Circuit Card Specifications for Payment Systems.Integrating NFC payment on both Mobile and POS devices.- Using Authentication and Cryptographic and Hashing technologies(RSA/PKI/CRT, 3DES/AES, etc.) to encrypt data in transit.

Wakandi is a Norway-based fintech company dedicated to accelerating transformation in the informal economy.In my role, I facilitated the collection of onboarding data and submitted comprehensive weekly reports to track progress and insights. I led a team of data entry interns in the data collection process, ensuring accuracy and efficiency. Additionally, I created and delivered engaging presentations and demonstrations of their Credit Management System (CAMS), which operates on top of Distributed Ledger Technology (DLT), to potential customers, showcasing its innovative features and benefits.

In this role, I work on the Android team to build a robust ERP system that helps field engineers manage their operations. The features include building a team, conducting toolbox meetings, performing job hazard analyses, capturing field pictures, and closing tickets.Tech Stack:Android (Kotlin/Java)Dagger-HiltRoom DatabaseKotlin Coroutines & LiveDataMVVM ArchitectureClean ArchitectureMaterial DesignMicrosoft GraphMicrosoft Azure StorageAzure DevOpsAuthentication with Azure AD