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# Junior Software Engineer (React/Java Script)

- **Company:** Sedulo
- **Location:** Leeds, UK
- **Experience:** Starter
- **Salary:** £30,000.0 - £35,000.0
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Microsoft Azure, Code Review, Databases, Continuous Integration, Cursor (Graphical User Interface Elements), Design of User Interfaces, PostgreSQL, Next.js, TypeScript, ReactJS, Backend, Information Technology, Front End Software Development, NestJS, Docker
- **Published:** September 14, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=d96f41a3a648d37c

## About the Role

* At least 6 months of paid, commercial experience building React (or Next.js) applications. Placement years and paid freelance work count; university, bootcamp and personal projects on their own don't.
 * Working knowledge of TypeScript. Node.js backend experience (NestJS, Express or similar) is a plus but not essential as we will help you pick this up.
 * A clear picture of how the parts of a modern web product fit together: frontend, API layer, backend, database and tests.
 * Experience using AI coding tools (Claude, Copilot, Cursor or similar).
 * Good UX instincts: you notice when something is clunky or confusing to use.
 * Able to reason clearly about trade-offs and explain your thinking.

Nice to have: a Computer Science or STEM degree, PostgreSQL, Docker, Azure, experience in fintech or another regulated sector.

## Description

* Build features across the full stack, with support from senior engineers where needed. We use TypeScript end-to-end: Next.js and React 19, NestJS, PostgreSQL, Docker and Azure.
 * Learn how we work with AI coding agents: breaking a problem down, writing a clear spec, reviewing what the agent produces and checking it actually works. We'll teach you to do this properly. You stay the engineer making the decisions, and the AI makes those decisions faster and better informed.
 * Work in a lightweight agile process: short sprints, standups and regular retros, shipping small, reviewable increments rather than big-bang releases.
 * Review code and have yours reviewed, including AI-generated code, with tests and verification as part of every change.
 * Take features from design to production: contribute to UI/UX decisions, build it, and see it deployed to Azure through the CI/CD pipeline.
 * Work directly with the people in the business who use what you build, and turn their problems into product.