Architected and shipped reactive microservices in Spring Boot WebFlux + Kafka for SHA assisted web, powering client and agent
registration as well as teenage mother registrations; cut feature rollout time by 30% and lifted user engagement by 25%.
• Built secure identity backends for the SHA Ambulancia onboarding platform, integrating Keycloak for SSO/user federation and an ML
facial-recognition model for KYC — improved verification accuracy by 40% and reduced fraud incidents by 20%.
• Spearheading a national emergency response platform for the Ministry of Health, built on Java/Spring Boot Reactive and Kafka
streaming, registering thousands of hospital facilities and ambulances — projected to cut emergency response time by 35% at
launch.
• Contributed to the Partner Automation squad delivering the Partner Portal, developing key modules including airtime serial refunds,
picklist generation, and the device report engine using DXL Starter and Java/Spring Boot.
• Owned cloud-native deployments on AWS, OpenShift, and Kubernetes with Jenkins CI/CD pipelines; raised deployment frequency
by 25% and reduced production downtime by 30%.
• Defined SLOs, load-tested services with Apache JMeter, and instrumented Spring Actuator + Log4j dashboards — achieved 20%
scalability gains and cut mean troubleshooting time by 15%.

Designed a central configurable integration backend for United Bank for Africa (UBA) Agency Banking, bridging in-house core
banking with Airtel Money and Telkom; processed 1M+ daily transactions at 99.9% uptime using Java EE, Spring Boot, and Kafka
streaming.
• Key contributor to the Central Bank of Zambia (CBZ) Shared Agency Platform serving Standard Chartered, Zanaco, and other
member banks over the National Switch; enabled 25% faster multi-bank settlements and scaled to 500K+ agents.
• Refactored business-rule engines and workflows into modular Spring Boot services — lifted throughput by 30% and reduced defect
density by 20%.
• Orchestrated SOAP integrations (WSDL/XML/XSD) with SoapUI regression harnesses, speeding bug detection by 20% and
improving partner integration reliability by 25%.
• Owned Git branching strategy, code reviews, and release engineering — reduced merge conflicts by 30%; enforced JUnit coverage
standards to boost reliability by 25%

Built Spring MVC web applications with Hibernate/JPA against SQL Server — reduced development time by 25% and data-access
complexity by 25%.
• Implemented JMS Message-Driven Beans and tuned JDBC stored-procedure calls against Oracle, lifting database performance by
20% and overall system scalability by 20%.
• Drove requirements gathering and systems documentation across business and technical stakeholders, cutting project
miscommunication by 20%.

• Owned the full SDLC — from requirements to production deployment — on government digital-service projects; boosted delivery
efficiency by 20%.
• Engineered Spring Boot microservices with Apache Kafka and Docker, improving system flexibility, scalability, and reliability under
load by 25–30%.
• Applied Java 8 (lambdas, streams, CompletableFuture) and multithreading patterns for asynchronous data pipelines — improved
response times ~20% and code maintainability by 30%.
• Automated builds and cross-platform deployments with Jenkins CI/CD, improving release velocity by 25%.