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Jason McElvain
Full-stack & AI developer: websites, stores, AI tools
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MacPlusSupport Office: an invoicing app small businesses sign into with Microsoft (portfolio build). Sign-in uses Microsoft Entra ID (MSAL, PKCE, read-profile permission only), each business sees only its own data, and sign-in tokens are encrypted before they're stored. Invoice numbers can't duplicate or skip: 300 saved at the same instant gave 300 unique numbers, while the common "max + 1" shortcut failed the same test. Built with Next.js, TypeScript and Postgres on Neon, deployed on Vercel. Live at macplussupport-office.vercel.app · Code: github.com/MacSupportPlus/macplussupport-office
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AI intake assistant for a small tech services business
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Fantasy football draft assistant: a live, data-driven draft board web app I built and run. Built with Angular and deployed on GitHub Pages. Live at macsupportplus.github.io/fantasy-football-draft-assistant
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R.I.C.H. Fest: festival website with ticketing for three events. Moved the site off Wix and connected Eventbrite and Stripe for ticket sales. Live at richfest.org
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