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# Machine Learning Engineer | Competitive Compensation | LLMs

- **Company:** Understanding Recruitment
- **Location:** Greater London, UK
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Python (Programming Language), Machine Learning, Software Engineering, Pytorch, Large Language Models, SC Clearance, Machine Learning Operations
- **Published:** September 9, 2026
- **Apply:** https://www.understandingrecruitment.com/job/machine-learning-engineer--competitive-compensation--llms/

## About the Role

* Excellent Python and software engineering skills
 * Strong experience with PyTorch and modern ML tooling
 * Hands-on experience building applications with LLMs
 * A strong understanding of transformers, embeddings and modern NLP
 * Experience with LLM evaluation, fine-tuning, RAG and/or agentic systems
 * Experience taking ML models from experimentation through to production
 * Strong judgement around model quality, data, performance and trade-offs

## Description

Machine Learning Engineer - LLMs

Want to build LLM-powered systems that have to work reliably in the real world?

We're looking for an exceptional Machine Learning Engineer to help build and deploy production-grade AI systems, with a particular focus on LLMs and modern generative AI.

This isn't a research-only role. You'll work across models, data, evaluation and production systems - turning the latest advances in AI into reliable, high-impact products.

What you'll do

 * Build and ship LLM-powered features and systems into production
 * Design robust evaluation frameworks to measure and improve model performance
 * Experiment with prompting, fine-tuning, retrieval and agentic approaches
 * Build data and ML pipelines that support rapid experimentation at scale
 * Optimise models and inference for latency, reliability and cost
 * Work closely with software, product and domain experts to solve difficult real-world problems
 * Help shape the company's ML architecture, tooling and technical direction

You'll ideally bring:

 * Excellent Python and software engineering skills
 * Strong experience with PyTorch and modern ML tooling
 * Hands-on experience building applications with LLMs
 * A strong understanding of transformers, embeddings and modern NLP
 * Experience with LLM evaluation, fine-tuning, RAG and/or agentic systems
 * Experience taking ML models from experimentation through to production
 * Strong judgement around model quality, data, performance and trade-offs

What's on offer

 * Competitive salary + equity
 * 7% pension
 * Private healthcare
 * Free daily meals
 * Significant technical ownership from day one
 * The opportunity to build cutting-edge AI that gets deployed in the real world

You'll need the right to work in the UK and be eligible for UK SC clearance. This is an office-first role, with flexibility when needed.


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