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Work Background
INGSenior Software Development Engineer
Sep. 2018Amsterdam Area, NetherlandsI lead the design, development, and deployment of payment solutions within the ING Payment Tribe, focusing on enhancing the customer experience for credit card services.
Responsible for architecting and migrating legacy applications to modern microservice-based systems.
Contributor in the implementation of 3D Secure solutions and the migration of credit card applications from mainframe to microservices.
Act as a tech lead in projects, overseeing solution design, requirement engineering, and project delivery, while mentoring junior engineers and guiding proof-of-concept (POC) developments. Technologies: Java (Spring Framework), Oracle, Cassandra, Docker, OpenShift, Prometheus, Kibana, Grafana. Accomplishments:
Migrating entire credit card suite of mainframe applications to cloud native applications built using microservice architecture.
Successfully migrated legacy Spring MVC applications to Spring Boot 3.0, enhancing performance , security and scalability.
Currently leading the integration of ING's credit card payment solutions with Worldline, contributing to the architecture and solution design of credit card processes.
Tangazoletu LimitedSoftware Engineering Manager
Mar. 2017 - Sep. 2018NairobiManaged a team of engineers, balancing 60% management responsibilities with 40% hands-on development.
Led the hiring process, technical assessments, code reviews, and performance appraisals, fostering a high-performance engineering culture.
Championed lean software development practices, emphasizing algorithm complexity analysis, test-driven development, and peer code reviews.
Directed major design sessions for mission-critical applications, ensuring optimal use of design patterns and best practices.
Tangazoletu LimitedSenior Software Engineer
Jan. 2016 - Sep. 2018KenyaKey Projects in Mobile Payments and Financial Services: Lipa na M-PESA: Contributed to the development of this mobile money service by Safaricom, enabling customers to pay for goods and services via their phones. The service supports over 49,000 merchants and processes KES 13 billion (US$123M) in annual transactions, serving nearly 1 million users daily. MTN Uganda Digital Merchant Enrollment Platform: Developed a high-availability data collection and aggregation pipeline supporting 200 TPS. Technologies used include Java 8 with Spring Boot, RabbitMQ, MongoDB, Oracle Database, and Redis, with secure integration of subscriber data via SOAP and Mutual-TLS. 1 Tap M-PESA: Worked on this NFC-based payment service that integrates with Lipa na M-PESA APIs, enhancing payments for ticketing and parking fees. Developed the concept using Lua as the primary embedded language. NIC Bank Mobile Lending Platform: Developed a microservices-driven solution for mobile lending, including credit scoring, loan disbursement, repayment management, and reconciliation. Built with Java 8, Spring Boot, Oracle DB, and Tibco APIs.
Roamtech solutionsSoftware Development Lead
Oct. 2013 - Dec. 2015Nairobi, KenyaSpearheaded the hiring, mentoring, and development of top engineering talent, fostering a culture of innovation and technical excellence. I led from the front, driving the design and implementation of high-impact software products, including a powerful, high-throughput SMS gateway capable of processing up to 200,000 messages daily with unmatched reliability. Technologies: Java, PHP, AMQP (RabbitMQ), Oracle, Redis, JavaScript. Key Achievement: Engineered a robust, scalable SMS gateway that became a cornerstone for major banking and insurance clients, delivering messages with a blazing speed of 200 transactions per second (TPS) and setting new standards for reliability and performance in the industry.
TracetrackerSoftware Engineer
Sep. 2011 - Oct. 2013Oslo Area, NorwayDeveloped web-based global traceability solutions, providing industry-leading transparency and data capture for various industries, including coffee, chemicals, and food products.
Collaborated in agile teams to build J2EE-based backend services and integrated APIs for data storage and exchange.
Key projects included a coffee trading solution for Bosnia & Herzegovina and a chemical tracing platform for BASF Germany.
Mobile Pay LimitedProgrammer
Apr. 2011 - Sep. 2011NairobiDeveloped biometric authentication solutions for mobile money applications, enabling secure transactions via fingerprint authentication.
Built Windows phone applications with integrated biometric readers, pioneering the first biometric based secure mobile transactions in East Africa.
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