> Markdown version of [/jobs/ext/2669237-senior-ai-engineer](https://www.wearedevelopers.com/jobs/ext/2669237-senior-ai-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).

---

# Senior AI Engineer

- **Company:** Harnham
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £80,000.0 - £115,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Python (Programming Language), Performance Tuning, Large Language Models, Prompt Engineering, Speech Synthesis
- **Published:** September 2, 2026
- **Apply:** https://www.reed.co.uk/jobs/senior-ai-engineer/57301015

## About the Role

* Strong commercial experience building AI, NLP, or LLM-based products
 * Hands-on experience with modern foundation models and AI frameworks
 * Experience with fine-tuning, prompt engineering, or instruction tuning
 * Strong Python engineering skills
 * Experience evaluating and improving model performance
 * Excellent communication skills and ability to work with non-technical stakeholders
 * Experimental mindset and a passion for building high-quality AI products

Desirable experience includes speech technologies, generative audio, multimodal AI, or content-focused AI applications.

Skills

 * LLMs
 * Text-to-speech

## Description

You will:

 * Build and fine-tune LLM-powered applications and services
 * Develop and optimise RAG pipelines
 * Deliver style and tone modelling solutions to improve LLM outputs
 * Support personalisation, summarisation, and real-time generation initiatives
 * Work closely with product, engineering, and business stakeholders
 * Contribute to multimodal and audio-focused AI projects
 * Help define evaluation frameworks and model quality standards


## Related Videos

- [Coffee with Developers - Maria Apazoglou](https://www.wearedevelopers.com/videos/1209-coffee-with-developers-maria-apazoglou)
- [Practical performance tuning for Serverless Java on AWS](https://www.wearedevelopers.com/videos/2075-practical-performance-tuning-for-serverless-java-on-aws)
- [Building a Browser-Based Karaoke Game with Web Speech API](https://www.wearedevelopers.com/videos/1274-building-a-browser-based-karaoke-game-with-web-speech-api)
- [Same Words, Different Worlds: Who's in Control?](https://www.wearedevelopers.com/videos/2071-same-words-different-worlds-who-s-in-control)
- [Bringing the power of AI to your application.](https://www.wearedevelopers.com/videos/1010-bringing-the-power-of-ai-to-your-application)
- [Using LLMs in your Product](https://www.wearedevelopers.com/videos/1186-using-llms-in-your-product)

## Related Articles

- [What Are Large Language Models?](https://www.wearedevelopers.com/magazine/304-what-are-large-language-models)
- [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer)
- [MLOps And AI Driven Development](https://www.wearedevelopers.com/magazine/82-mlops-and-ai-driven-development)
- [Prompt Engineering is a Job of the Past](https://www.wearedevelopers.com/magazine/342-prompt-engineering-is-a-job-of-the-past)
- [The Prompt Engineer ✍️](https://www.wearedevelopers.com/magazine/216-the-prompt-engineer)
- [Got AI ideas but no money? Here are 10 free ways to level up your AI skills with Google Cloud](https://www.wearedevelopers.com/magazine/600-got-ai-ideas-but-no-money-here-are-10-free-ways-to-level-up-your-ai-skills-with-google-cloud)