A working logbook of systems I've designed and shipped — from offline-first retail software to relationship and support tooling. Each plate is a build, not a mockup.
Offline-first POS for corner-shop retail.
A progressive web app that keeps selling when the network drops. Inventory is an append-only stock-movement ledger with ULID keys, so counts reconcile deterministically once the device is back online. Barcode scanning runs off keyboard-wedge burst detection — no native app required.
the ledger never mutates — every sale is a new row
Pipeline + reminders for a professional-services firm.
Built to replace spreadsheet chaos: contacts move through a drag-and-drop pipeline, a reminder engine surfaces follow-ups before they slip, and a document vault ties every file to the right account. Role-based access keeps partner and associate views separate.
reminders fire before things slip, not after
SLA-aware support desk with live queues.
Tickets arrive from multiple channels, get routed by priority, and are held to per-tier SLA timers that escalate on breach. Assignment rules balance load across agents, and a full audit trail records every status change — built for teams that answer to an SLA, not a whim.
every state change is logged — nothing disappears
Marketing sites, portfolios & super-app surfaces.
Front-end work across SvelteKit and React — from this notebook itself to product landing pages and the web surfaces of a super-app serving millions of subscribers. Fast, accessible, and served behind Nginx / F5 with an eye on Core Web Vitals.
this very page is fig. 04
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