Dan Agaba

A multi-tenant platform for guard companies and property managers. Guards work from an Android app — logging visitors at the gate, scanning QR checkpoints on patrol, raising panic alarms and filing incident reports. Supervisors watch a live control room across every site. Residents get visitor passes and a door buzzer that reaches them on WhatsApp or SMS.

The hard part was patrol verification: proving a guard physically walked the route. QR checkpoints are placed on uploaded floor plans and drawn back floor by floor with a coverage summary. 41 database tables, 207 automated tests, two Android apps, and a 14-phase deployment runbook.

Lets any merchant run their own gift-card programme. They design the voucher in a drag-and-drop canvas editor — layout presets, snap guides, shapes, gradients, QR placement, undo/redo — then sell through a public storefront and redeem by scanner.

Each merchant connects their own payment gateway, so funds settle directly to them and no float sits with the platform. Merchant and company approval workflows, profile-change approval as an anti-fraud control, subscription billing, multi-currency. 48 tables, 95 automated tests.

Built for a market that pays by mobile money rather than card. Organisers were matching MTN and Airtel payment messages against ticket orders by hand, one at a time. This verifies them automatically and issues the ticket with nobody touching it.

Multi-organiser tenancy, custom registration fields, discount coupons, subscription and per-event billing, and a companion Android scanner app working against a token-authenticated API at the gate.

Six strangers who share an interest sit at one table for sixty minutes. Interest-matched seating, a verification step before a seat is confirmed, conversation deleted at table close, and a double-blind “sit together again” vote neither side sees unless both agree.

Real-time messaging over WebSockets with Laravel Reverb, timezone-aware scheduling across East African and European hours, a companion Android app, and a dark theme designed from scratch. 238 automated tests.

Sold to interior design studios. A client photographs a real room; the platform repaints walls, swaps flooring or furniture for products from a real catalogue, or restyles the whole space from a sentence of description — then turns the result into a costed, shoppable bill of materials. Panoramas and short AI video walkthroughs included.

The AI layer sits behind a driver abstraction, so providers and models are configured in the application rather than written into it. One codebase serves two front ends: an admin panel for the studio and a client portal for their customers. 45 tables, 161 automated tests, three languages, four payment rails.

A codebase rescue rather than a build from scratch, and worth saying so. I inherited a commercial Laravel / Inertia / Vue application, rebranded it end to end and extended it into a working product.

Added campaign planning with content types, a pluggable AI engine layer so OpenAI, Anthropic and Gemini are swapped by configuration, scheduled auto-publishing to Facebook, Instagram, X, TikTok and LinkedIn, an API health monitor, credit and subscription billing, and team accounts with granular permissions. A good part of the work was repair: the backend referenced database columns the migrations had never created.