Senior full-stack developer with 10+ years building content platforms, headless CMS sites, and API integrations for agencies, Fortune 500 energy companies, and regional banks.
- First Bank: Lead developer for eight years on the regional bank's web platform (8 Texas locations), on Laravel and Contentful: performance, regulatory compliance, and content systems.
- First Bank Home Loans: Built the site for the bank's separate home-loans company.
- Marathon Oil (now part of ConocoPhillips): Lead developer for four years on a Fortune 500 marketing platform built with Gatsby and Sanity, including a secure contractor portal for multiple audiences.
- EG LNG: Sole and current developer on a trilingual (EN/ES/FR) Next.js site with a custom Sanity Studio, job postings, and a multi-step application system. First version delivered in 3 weeks.
I publish small, focused packages for content websites under SiteOnce.
- @siteonce/midnight: Fixed headers that change style as sections scroll beneath them. TypeScript, ~2 kB gzipped, with React, Vue, Svelte, and Solid adapters. Demo
React, Next.js, Astro, Svelte, Node.js, Laravel, TypeScript, SCSS · GraphQL, SQL, Stripe, Supabase · Sanity, Contentful, Shopify Plus · Vercel, Netlify, GitHub Actions
"An excellent engineer: super detail oriented and delivers clean, efficient code." Adam Rasmus, Partner & Creative Director, What.it.is
"Highly capable, thorough, and detail-oriented... always impressed with the cleanliness of his code." Benjamin Slade, Partner & Creative Director, What.it.is
"Marc is an amazing developer and great asset to our team. He works hard on his projects and takes his work seriously, always striving to improve the product and the process." JT Mudge, Chief Experience Innovator, LitmusBox
Reach me: marc@marcwiest.com

