Web engineering
My web work covers public product websites and authenticated operational systems. I focus on workflows, information architecture, data loading, permissions, responsive UI, search visibility, and the backend contracts that make the interface reliable.
What this looks like in practice
Core technologies
Project evidence
Each project below links to a deeper case study covering product scope, engineering ownership, supporting systems, and production evidence.
Enterprise · Case study
Hospital management information system connecting patient registration, OPD, emergency, inpatient care, orders, referrals, theatre, billing, ambulance, mortuary, duty coverage, patient movement, documents, and facility operations. Its latest public draft also adds facility-bound M-Pesa patient invoice collection with encrypted merchant credentials, callback verification, idempotent receipt handling, and invoice reconciliation.
Read case studyEnterprise · Case study
Rent collection and reconciliation software for landlords and property managers. RentPayor creates rent invoices, lets tenants pay KES rent through an invoice-linked M-Pesa flow, automatically reconciles confirmed payments, and keeps partial balances, carried-forward credits, receipts, leases, units, tenants, and manual payment records in one rent ledger.
Read case studyEnterprise · Case study
Cargo and logistics operations platform spanning mobile field workflows and back-office administration. Macsim handles loads, reservations, driver assignments, trip tracking, documents, notifications, fleet operations and finance, with a guarded M-Pesa/Daraja flow for funding a collection-account ledger and paying drivers in full or partial load installments.
Read case study