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Senior Machine Learning Engineer

trg.recruitment • Full-time • london, south east england, uk • 15h ago

Senior Machine Learning Engineer — Ranking & Recommendations

Tech Stack: Python, GCP, BigQuery, dbt, modern ML frameworks, LLMs, embeddings, RAG

Salary: £110,000 – £130,000 plus 8% bonus

Contract: Permanent, full-time

Location: London, 3 days per week

Sponsorship: Tier 2 sponsorship available

We're looking for a Senior Machine Learning Engineer to be the first dedicated ML hire. You'll work alongside the Data Engineering team to design, build, and own the recommendations infrastructure from the ground up, while helping define the long-term ML strategy - establishing best practices for model development, experimentation, evaluation, and monitoring.

As the first ML engineer, you'll have significant ownership and the opportunity to shape the discipline as we scale, collaborating closely with Product, Engineering, and Data teams to ensure ML capabilities are deeply embedded in the user experience.

We're looking for someone with deep experience in ranking and recommendation systems, who thrives on building from zero to one and wants real ownership in a fast-growing startup.

Must-haves

5+ years of experience in machine learning engineering
Strong track record building ranking, recommendation, or personalisation systems in production
Experience using generative AI across a product - LLMs for embedding generation, semantic understanding, conversational interfaces, feature generation, RAG, etc.
Experience working with large-scale user behavioural data; proficiency with Python and modern ML frameworks
Experience with cloud-based ML infrastructure (ideally GCP)
Familiarity with data warehousing tools such as BigQuery and dbt

Interested? Apply below or reach out directly at

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