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Full Stack Developer - GenAI

Full Stack Developer - GenAI

Hybrid

London, United kingdom

£ 800 /day

Freelance

09-10-2025

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Skills

Python TypeScript GitHub Research git react Agile Git/GitHub GCP

Job Specifications

Full Stack Developer - GenAI

6-month contract | Inside IR35 | Up to PS800 per day | 2-3 days per week in London

A global pharmaceutical client is growing their Responsible AI function and looking for a Full Stack Developer to help build and visualise GenAI applications that evaluate LLM safety, performance, and output explainability.

This role suits someone who enjoys working across both frontend and backend systems, connecting AI models to real-world user interfaces and data pipelines.

What you'll be doing:

Develop and deploy full stack features (Python backend, React frontend)

Integrate LLM and GenAI components into the product ecosystem

Conduct user research to understand risk and usability in AI systems

Contribute to agile development cycles and code reviews

Key Skills:
Python, React, TypeScript, Git/GitHub, cloud infrastructure (GCP), agile development, automated testing

Nice to Have:
Experience with AI safety evaluations, LangGraph, PydanticAI, or AutoGen frameworks

Ideal for:
Full stack engineers interested in building user-facing AI tools and safety-focused GenAI systems.

Desired Skills and Experience

Python, React, TypeScript, Git/GitHub, cloud infrastructure (GCP), agile development, automated testing

About the Company

Harnham provides specialist Data and AI recruitment and staffing services, along with bespoke training solutions, across multiple industry verticals, operating in the UK, the USA and EU - contact us today to discuss your requirements: info@harnham.com Our recruitment and talent teams cover all aspects of the data and AI pipeline, from collection to consumption, across multiple data roles and functions. Whether you need full-time staff, contract talent, specialized training, Data-qualified graduates, or C-suite executives... Know more