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Senior Next.js Developer — AI SaaS Build & Long-Term Partnership

Build an AI-powered SaaS for men's performance and longevity

Develop a full-stack AI SaaS using Next.js, Supabase, and Anthropic Claude API, including subscription billing and responsive UI/UX. After launch, continue as a long-term partner for new features and optimization.

Why This Role?

Direct founder access, real impact from day one

Required Skills

Next.jsSupabaseAnthropic Claude APIUI/UXSaaSFull-stack DevelopmentUI/UX design

Keywords

Next.js developerSupabaseAI SaaSFull-stack developmentFreelance developerSubscription billingResponsive UI/UX
View Original Description from Contra

Original description from Contra

Building an AI-powered SaaS in the men's performance and longevity space. Looking for a senior Next.js developer to take ownership of the build and stay on as a long-term partner. Reference for quality and feel: The work covers full-stack development on Next.js + Supabase + Anthropic Claude API, subscription billing integration, clean responsive UI/UX, and shipping production-ready code. After launch, ongoing partnership for new features, performance optimization, and a second e-commerce project on the same stack. Looking for someone with strong Next.js and Supabase experience, shipped consumer SaaS projects in their portfolio, sharp design taste, and the ability to work async and own decisions independently. Send your portfolio with at least one production SaaS link. Share your rate and availability. Start your proposal with the word PROTOCOL so I know you read this.

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Company
VidZenith
Source
Contra
Salary
$XX,XXX
Job Type
freelance
Location
Worldwide Remote · Remote
Category
Engineering
Seniority
senior
Posted
May 21, 2026

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