Machine Learning Engineer

Ref: BBBH66812_1778494322

Machine Learning Engineer

Whitehall Resources are looking for a Machine Learning Engineer. This role is hybrid working with 3 days per week onsite in South Yorkshire, and the remainder remote working, for an initial 5-month contract.

***Inside IR35***

Job Description:
Build the knowledge, retrieval, and evaluation layer that allows the AI helpdesk to answer accurately and safely.

Key Responsibilities:
– Build and maintain data pipelines for IT knowledge articles, SOPs, ticket history, and troubleshooting content.
– Develop RAG pipelines, embeddings, indexing, and retrieval optimization.
– Improve answer quality using chunking, ranking, filtering, and grounding techniques.
– Create evaluation datasets and automated quality tests for accuracy, hallucination, and task completion.
– Support model selection, tuning, and performance benchmarking.
– Work with engineering teams to improve response quality and reduce failure rates.

Required skill:
– Strong Python and data engineering skills.
– Run data quality testing, verify LLM results etc
– Experience with vector databases, embeddings, and retrieval systems.
– Experience building ETL/data pipelines for structured and unstructured data.
– Understanding of LLM evaluation, experimentation, and model performance metrics.
– Familiarity with SQL, APIs, and cloud data platforms.
– AWS (preferred), GCP exposure.

Preferred:
– Experience with enterprise knowledge systems and ticket datasets.
– Experience with fine-tuning, reranking, or search relevance optimization.

All of our opportunities require that applicants are eligible to work in the specified country/location, unless otherwise stated in the job description.

Whitehall Resources are an equal opportunities employer who value a diverse and inclusive working environment. All qualified applicants will receive consideration for employment without regard to race, religion, gender identity or expression, sexual orientation, national origin, pregnancy, disability, age, veteran status, or other characteristics.

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