DuePress — invoicing you host yourself
What it is: a self-hosted WordPress invoicing plugin with Stripe and Square payments — “no SaaS fees, your data on your server.”
What we built: the invoicing plugin, the payment integrations, and a deliberately fast product site (single-file static homepage with zero external CSS/JS and full structured data) paired with a WordPress blog for content.
Notable engineering: a hybrid architecture — static where speed is everything (the homepage scores near-perfect Core Web Vitals), WordPress where content velocity matters.
Stack: WordPress, Stripe, Square, static front-end, custom theme.