Claude Code AI-Assisted Developer

42 District; United States; Remote; USD 70,000 - 140,000; Full time

Job summary

42 District is seeking a Claude Code AI-assisted developer to build custom software, SaaS products and internal tools using Next.js, Supabase and AI-assisted engineering. Claude Code is our main build method: you will direct it, review everything it writes, and own the quality of what ships.

Responsibilities include building full-stack apps, planning features, database design, API integrations, tests, and deploying on Vercel and Supabase, while collaborating with clients and our team for demos

Qualifications

• Real project experience building with Claude Code or similar AI coding tools.
• Strong working knowledge of Next.js, React and Supabase (Postgres, auth, row-level security).
• Confidence reviewing code critically: security, performance and maintainability, not just whether it runs.

Responsibilities

• Build full-stack applications with Claude Code, from MVPs to production systems.
• Plan features, break work into clear tasks, and review, test and refine AI-generated code before it ships.
• Design data models, APIs and integrations (CRMs, payments, email, third-party APIs).
• Write and maintain project context files, tests and documentation so builds stay consistent.
• Deploy and maintain applications on Vercel and Supabase.
• Work directly with clients and the team on scope, demos and feedback.

Skills

Claude Code AI-assisted tools

Next.js

React

Supabase

Git & PRs

Tools

Claude API

OpenAI API

Job description

We are looking for a Claude Code AI-Assisted Developer to build custom software, SaaS products and internal tools with Next.js, Supabase and AI-assisted engineering.

USA/EU

Contract

We are looking for a Claude Code AI-Assisted Developer to build custom software, SaaS products and internal tools for our clients using AI-assisted engineering. Claude Code is our main build method: you will direct it, review everything it writes, and own the quality of what ships.

Responsibilities

• Build full-stack applications with Claude Code, from MVPs to production systems.
• Plan features, break work into clear tasks, and review, test and refine AI-generated code before it ships.
• Design data models, APIs and integrations (CRMs, payments, email, third-party APIs).
• Write and maintain project context files, tests and documentation so builds stay consistent.
• Deploy and maintain applications on Vercel and Supabase.
• Work directly with clients and the team on scope, demos and feedback.

Requirements

• Real project experience building with Claude Code or similar AI coding tools (OpenAI Codex, Cursor).
• Strong working knowledge of Next.js, React and Supabase (Postgres, auth, row-level security).
• Confidence reviewing code critically: security, performance and maintainability, not just whether it runs.
• Git, pull requests and branch-based deployments.

Nice to Have

• Experience building AI agents or LLM features (Claude API, OpenAI API, tool use, RAG).
• Stripe, Resend or other API integrations.
• Background migrating products off no-code platforms such as Bubble.
• Availability (hours per week + timezone)
• One project you built with Claude Code or a similar tool, and what you changed in the AI's output
• Walkthrough video (up to 5 minutes): applications with video get priority.

Build smarter systems. Automate what slows you down.