QuoteRoutine: UK quote follow-up SaaS (founder and lead developer)

QuoteRoutine (https://www.twine.net/signin is my own UK SaaS that takes a quote from sent, through follow-up, to the customer’s decision. I designed and built the whole product.

What I built

• React/TypeScript interface with plan-specific dashboards
• Follow-up engine that sends from the customer’s own mailbox (Microsoft 365 and Gmail integrations) and stops when the customer replies
• Cloudflare Workers back end with D1 and R2, scheduled jobs and backups
• Stripe subscriptions with signed webhooks; Resend transactional email
• Security hardening: tenant isolation, TOTP, rate limits, audit trails
• Playwright tests and GitHub Actions CI; full product documentation

Why it matters to your project: the same stack and working method (clear scope, tested changes, written handover) apply to websites, landing pages, Stripe and email integrations, and automations.