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CHEN MARK
@chen_mark1
FULL STACK WEBSITE EXPERT
United States
English, German, Spanish, French
About me
Expert AI & Full-Stack Developer for Web, SaaS, and Mobile Apps
I’m Joost Groot, a full-stack developer with 5+ years of experience building scalable, modern applications. I work with React, Next.js, Node.js, TypeScript, JavaScript, Tailwind CSS, MongoDB, MySQL, Angular, Vue, Python, Flask, Supabase, Lovable, and API integrations. I help clients with bug fixes, responsive websites, MVPs, full-stack apps, and secure backends—focused on clean code, clear communication, and on-time delivery.
Skills
CHEN MARK
Offline •
Average response time: 14 hours
See my services
Programming & Tech
I will create whop app, whop mini app, custom app for your business
