> Markdown version of [/jobs/ext/4532947-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/4532947-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Full stack Engineer

- **Company:** Hays plc
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** LangGraph Framework, Automation of Tests, Databases, Python (Programming Language), Oracle (Applications), Redis, SQL Databases, ReactJS, Backend, Agentic-AI, Data Management, Celery
- **Published:** November 3, 2026
- **Apply:** https://www.hays.co.uk/job-detail/full-stack-engineer--london_4841803

## About the Role

* Strong hands-on Python development experience,
 * Strong experience with Celery and Redis
 * Hands-on experience building MCP servers and tools
 * Experience with LangChain and/or LangGraph
 * Strong React development experience,
 * Strong automated testing experience
 * Experience within financial services, commodities, trading or market data would be advantageous

## Description

A leading financial markets organisation is looking for an experienced Senior Full Stack Python Engineer to build intelligent applications and data platforms supporting complex, data-intensive workflows. You will develop Python backend services, asynchronous processing solutions using Celery and Redis, and MCP tools integrating APIs, databases and internal systems. You will also work with LangChain and LangGraph to build agentic AI workflows. This is a hands-on full stack role, combining Python engineering with React, AG Grid, SQL and Oracle. Experience within financial services, commodities, trading or market data would be advantageous.

Hybrid: 3 days in London-based office
Rate: Up to £750pd inside ir35 via umbrella
Duration: 6 months

What you'll need to succeed

 * Strong hands-on Python development experience,
 * Strong experience with Celery and Redis
 * Hands-on experience building MCP servers and tools
 * Experience with LangChain and/or LangGraph
 * Strong React development experience,
 * Strong automated testing experience
 * Experience within financial services, commodities, trading or market data would be advantageous

What you need to do now

If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

#4841803 - Cameron