Machine Learning Engineer
JOB_53923034794863Job type
ContractLocation
SheffieldWorking Pattern
Full-timeSpecialism
ConsultancyIndustry
Technology & Internet ServicesPay
500-550
Machine Learning Engineer | Inside IR35 | £500-£550 | Manchester/Sheffield
Machine Learning Engineer
Location: Sheffield (3 days on-site per week)
Rate: £500 per day
About the Role
We’re looking for a skilled Machine Learning Engineer to help build and optimise the intelligence layer behind an AI-powered helpdesk. In this role, you’ll focus on enabling accurate, safe, and high-quality responses by developing robust knowledge retrieval and evaluation systems.
You’ll play a key part in designing data pipelines, improving retrieval performance, and ensuring AI outputs meet high standards for accuracy and reliability.
Key Responsibilities
- Build and maintain data pipelines for IT knowledge articles, SOPs, ticket history, and troubleshooting content
- Develop and optimise RAG (Retrieval-Augmented Generation) pipelines, including embeddings, indexing, and retrieval strategies.
- Improve AI response quality through chunking, ranking, filtering, and grounding techniques
- Create evaluation datasets and implement automated testing for:
- Accuracy
- Hallucination detection
- Task completion
- Support model selection, tuning, and performance benchmarking
- Collaborate with engineering teams to enhance response quality and reduce failure rates
Required Skills & Experience
- Strong Python and data engineering expertise
- Experience building ETL/data pipelines for structured and unstructured data
- Solid understanding of:
- Vector databases, embeddings, and retrieval systems
- LLM evaluation and experimentation frameworks
- Model performance metrics and validation techniques
- Experience running data quality testing and validating LLM outputs
- Proficiency with SQL, APIs, and cloud data platforms
- Hands-on experience with AWS (preferred) and exposure to GCP
Desirable Experience
- Experience working with enterprise knowledge systems and ticket datasets
- Familiarity with:
- Fine-tuning models
- Re-ranking techniques
- Search relevance optimisation
Why Join?
- Work on cutting-edge AI and LLM-driven systems
- Opportunity to shape the intelligence layer of a real-world AI product
- Collaborative, forward-thinking engineering environment
- Competitive day rate and flexible hybrid working model
Machine Learning EngineerJOB_539230347948632026-05-072026-08-06
Talk to Ashley Sharp, the specialist consultant managing this position
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JOB_53923034794863