Engineering bespoke web apps, Shopify storefronts, and mission-critical integrations.

Solo freelancers were tracking billable work across notes, chat threads, and spreadsheets, then rebuilding invoices from memory. We designed and engineered Billnox, our own SaaS product, to turn tracked sessions into shareable client progress reports and cleaner invoices—with per-client rates and native multi-currency billing built in from day one.

Deal Dunk runs a subscription membership storefront where a low-cost signup unlocks a free item that ships once the first recurring charge clears. A single unwritten database column meant that link never formed, silently stalling a growing backlog of paid orders. We traced the defect across the Shopify and subscription-billing webhook streams, shipped the fix behind a guarded backlog drain, and built Deal Dunk’s native Shopify Functions app for custom cart discounts and checkout validation.

Topspin Pickleball’s Cebu courts were booked by phone calls and a shared spreadsheet, with no way to stop two customers from claiming the same slot. We engineered a QR-code booking system: customers scan at the venue, pick an open court and time, and pay via GCash—verified by staff from an admin dashboard. A Postgres exclusion constraint and an advisory lock make double-booking structurally impossible, not just discouraged.