StackMoth/Work
Selected work
Systems in production
Six systems that are running right now, described by what they guarantee rather than by the technology they are built from. Client names and links appear with permission.
Booking & payments
Reservation platform
Multi-tenant court booking and payments for a Colombo facility operator, live since 2024. Three-layer double-booking defence in PostgreSQL, multi-merchant payment routing, and an incident subsystem built after real money went missing.
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IoT & automation
CourtRes
Scheduled floodlight control on a Raspberry Pi and Zigbee, unattended at two venues. Built around a positive confirmation protocol after the logs revealed the system was reporting successes it had not verified.
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Financial software
Invitrack
Receivables and invoicing, delivered in about five weeks. Row-level security on all 14 tables, invoice numbers that can never be recycled, and the only one of these systems with CI.
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Design engineering
SILK
Site hoardings and exhibition banners authored entirely in HTML and CSS, exported at print resolution by a headless browser in verified tiles. Installed on the tower in Rajagiriya.
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Personal infrastructure
Ledgerline
A private finance and network dashboard on Cloudflare Workers and D1, with Cloudflare Access as the only authentication boundary. The application implements no passwords, cookies or sessions at all.
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Public tool
Rainfall tracker
A public tracker pairing modelled rainfall with measured river levels for Sri Lanka's monitored rivers. Vanilla JavaScript and Leaflet, with a data pipeline that validates its own output.
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Contact
Have a system that needs building?
Tell me about the operation you want to support or the manual work you want to remove. I reply personally, usually within a day or two.