Kashier

Maintained WooCommerce payment plugins serving thousands of active merchants — a lot of careful bug-fixing to keep things working across the block editor and HPOS without breaking existing integrations

Built a URL shortener service that ended up saving ~25% on SMS costs platform-wide. Sounds like a small project, but when SMS volume is high the savings are real

Improved API and plugin documentation to the point where merchant integration support requests dropped noticeably — good docs are underrated

Fixed critical production bugs and kept system stability high across a payment platform where downtime directly costs merchants money

WooCommerce plugin compatibility with Gutenberg block editor and HPOS was fragile — each WordPress update was a potential regression for thousands of merchants

SMS-based payment notifications were expensive at scale. No one had looked at the actual cost per message until the bill landed

API documentation was incomplete and inconsistent, creating support overhead every time a new merchant tried to integrate

Refactored WooCommerce plugins to be block-editor-compatible and HPOS-ready, with a test suite covering the most common regression paths so updates stopped being scary

Built a URL shortener with redirect tracking — short enough for SMS, with analytics attached. The 25% cost reduction was a side effect of doing it properly

Rewrote the integration documentation from scratch, covering auth flows, webhook contracts, and error handling with real examples instead of vague descriptions