Rayan S.

I've built and published 11 add-ons to the Google Workspace Marketplace — all of them through Google's OAuth security review. If you need Sheets, Docs, Forms, Slides, Gmail, or Calendar to do something they don't do out of the box, that's the work I do every day. Shoot me an invitation or message and I'll send you a personalised audit on exactly how I'd solve your problem. What I build: • Custom Google Sheets add-ons and menu-driven tools • Form → Sheet → Doc/Calendar/email automation pipelines • Approval routing, notification systems, and scheduled reports • Bulk document and certificate generation from spreadsheet data • Third-party API integrations (Stripe, QuickBooks, webhooks, REST) • Private add-ons for a single Workspace domain, or public Marketplace listings Why this matters for your project: most Apps Script goes wrong in production, not in development. The 6-minute execution limit. Daily quota ceilings. Triggers that can't fire faster than hourly on a published add-on. PropertiesService blowing up in AuthMode.NONE. OAuth scopes that fail Google's review after you've already shipped. I've hit every one of these in front of real users and engineered around them, and I build with those limits in mind from the first line. I also handle the full publishing path if you want your tool on the Marketplace: OAuth verification, scope justification, privacy policy, store listing, and Google's review process. Recent work includes a full SaaS product outside the Workspace ecosystem — a duplicate transaction detector for QuickBooks Online built on Next.js and Postgres with Intuit OAuth, encrypted token storage, and Stripe billing. Fixed-price on well-defined scopes. Clear timelines. I tell you before I start if I think there's a simpler way to solve it. Expertise: Google Apps Script | Google Workspace Automation | Google Sheets Automation | Google Docs Automation | Google Calendar Automation | Google oAuth verification | Mail merge | Google Apps Script API | Google Sheets API | Google Docs API | Google Calendar API Portfolio: brightdesk.dev