[Hiring] UK part-time application engineer — React, TypeScript, Postgres, Supabase and agentic coding £25-35/hour

[Hiring] UK part-time application engineer — React, TypeScript, Postgres, Supabase and agentic coding £25-35/hour

I run a growing portfolio of business web apps and I am genuinely looking to hire someone part-time to help me look after and improve them. This is an active vacancy, not a speculative post or a way of collecting CVs.

The work is a mixture of full-stack development and application operations. I need someone who can help turn bugs and ideas into a realistic priority list, write useful GitHub issues, improve branch/review/release workflows, establish a proper staging environment, diagnose and fix problems, add sensible tests and keep the documentation good enough that we are not rediscovering everything each time.

The main application is a substantial workforce-management PWA built with React, TypeScript, Postgres and Supabase. It handles operational and personal data and integrates with several external services, so judgement around access, migrations, secrets, testing and production releases matters. There are also other broadly similar applications in the portfolio.

Agentic coding tools are part of the normal workflow. You should be comfortable using Claude Code, OpenAI Codex or equivalent tools to investigate and implement work. You must also be able to review the diff, test the behaviour, protect sensitive data and explain the resulting code yourself. I am looking for effective AI-assisted engineering, not unverified “vibe coding”.

I care more about proof of work, problem-solving, judgement and reliability than degrees or certifications. Capable university students and early-career developers are welcome to apply, as are experienced people who want consistent part-time work.

The arrangement is:

• remote, but you must be based in the UK;
• part-time and on a contractor basis;
• paid at a fixed day rate agreed before starting;
• flexible around study or other clients, with a dependable working cadence;

and

• able to grow into more regular work and potentially a full-time position.

There is also potential for a separate 24/7 on-call arrangement for major live incidents. Every on-call activation would earn a fixed call fee simply for responding, even if no fault is ultimately found or no repair is needed. Any time spent investigating, containing or fixing the issue would also be paid at an agreed additional hourly rate. The rota, availability and response expectations would be agreed in advance rather than assumed.

Useful experience includes GitHub, JavaScript/TypeScript, React, SQL/Postgres, Supabase, testing, CI/CD, API integrations and separating staging safely from production. I do not expect one person to know every tool on day one.

If you are genuinely interested, message me directly with:

1. a short introduction and your UK location;
2. two or three examples of work and what you personally contributed;
3. a real example of using an agentic coding tool and checking its output; and
4. your usual availability.

No long cover letter is required. Shortlisted applicants will have an informal conversation followed by a small, paid practical exercise using a security-sanitised task.