Working applications, APIs and machine-learning projects demonstrating how we design, build, test and deploy software.
Production-structured M-Pesa payment service covering STK Push initiation, asynchronous callbacks, transaction states, retries, refunds, analytics and transaction event tracking.
https://github.com/kimtour/mpesa-payment-gatewayFull-stack Kenyan payroll application calculating PAYE, NSSF, SHIF, Affordable Housing Levy, net salary and employer cost through a web application and REST API.
https://github.com/kimtour/kenyan-payroll-systemReact and FastAPI payment interface demonstrating payment initiation, transaction state management, webhook verification and frontend-to-backend API integration.
https://github.com/kimtour/mpesa-payment-gateway-demoMachine-learning project covering graph analysis, Graph Neural Networks, link prediction, edge classification, community detection, graph-level learning and model explainability.
https://github.com/kimtour/ML-on-Graphs