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# React Developer

- **Company:** 339 Limited
- **Location:** UK (Remote available)
- **Salary:** £55,000.0 - £65,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, JIRA, PostgreSQL, Node.Js, TypeScript, ReactJS, Git, Serverless Computing
- **Published:** June 29, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=22b8597ce5389c50

## About the Role

Do you have experience in React?, * Solid working knowledge of TypeScript and React 18 (SPA, hooks, component composition).

 * Familiar with Node or Deno serverless edge functions.
 * Real PostgreSQL: schema design, RPCs, migrations, row-level security as a working tool.
 * REST and third-party API integration.
 * Testing as a first-class discipline (unit and integration, high coverage).
 * Git workflow, PR review.
 * AI-first development: Already fluent with coding agents (Claude Code, Copilot, or equivalent) as part of your daily workflow. You know when to lean on them, when to override them, and how to keep the diff clean.

## Description

You'll be the second developer on a small, fast-moving team building a recurring-payments product from the ground up. The workflow is: tickets in, code out, with senior mentoring and modern AI tooling doing the heavy lifting so you can focus on the judgment elements.

We need someone who can settle in fast and start shipping inside the first month. There's no scope to carry anyone, and equally no junior tier to hide behind. If you're a strong mid-level developer who wants to grow under senior oversight, this is the role. If you're looking to set architectural direction in year one, it isn't.

What you'll deliver

 * Ship tickets reliably: You're turning Jira tickets into shipped code on a predictable cadence.
 * Direct AI tooling well: You use Claude Code as a productivity multiplier, not a crutch. The diffs you submit for review are clean and you can defend every line.
 * Protect the payments path: Zero high-severity production incidents in the recurring-payments path caused by code you shipped.
 * Get through review without drama: Review cycles shorten over time. The patterns of the codebase become second nature.
 * Grow visibly: The mistakes you're making in month 6 are different from the ones in month 1: harder, more interesting, further from the basics.
 * Stay honest about what you don't know: You flag uncertainty before code ships, not after.


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