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Engineering work

Products I’ve built across web, mobile, backend, and data.

The homepage highlights three projects that best demonstrate breadth. This page keeps the complete public set of engineering case studies available for deeper review and discovery.

JournPad: Voice Journal App Store listing screenshot
SaaSCase study

JournPad: Voice Journal

Voice-first journaling app that preserves the original recording, transcribes spoken entries, and uses AI to generate useful titles, summaries, and categories. Entries can be searched and revisited by date, linked to goals, supported by reminders and prompts, and protected with account, deletion, and optional biometric controls.

ExpoReact NativeTypeScriptGoogle CloudPython
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CliviQue HMIS web app screenshot
EnterpriseCase study

CliviQue HMIS

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.

Next.jsTypeScriptReactTanStack QueryTailwind CSS
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RentPayor Play Store listing screenshot
EnterpriseCase study

RentPayor

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.

ExpoReact NativeTypeScriptPythonFastAPI
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Macsim Cargo Play Store listing screenshot
EnterpriseCase study

Macsim Cargo

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.

ExpoReact NativeTypeScriptPythonFastAPI
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AI Stylist Play Store listing screenshot
SaaSCase study

AI Stylist

Mobile wardrobe-management and outfit-recommendation product. Users create wardrobes, upload clothing photos for AI-assisted category, tag, and description analysis, and generate one-time, daily, or weekly outfit suggestions that can use precise local weather; recommendation history is stored locally in SQLite and designed to sync with the cloud.

ExpoReact NativeTypeScriptPythonFastAPI
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Let's work together

Looking for an engineer who can own the product beyond a single layer?

I'm interested in senior product engineering work across web, mobile, backend, and integrations—especially teams shipping real products end-to-end.