Senior Data Scientist at Robert Walters, Chester, 6 to 12 Months, £550-£600 per day

Senior Data Scientist (Outside IR35)

• Duration: 6 months
• Location: Cheshire (onsite 2 days p/w)
• Rate: £550-600 p/d

We need a hands-on Contract Senior Data Scientist to design, build, and ML models that drive commercial performance. You will take ownership of the full life cycle: framing problems, building models, and deploying them reliably into production.

This assignment requires an expert Data Science practitioner who can take complex business problems through the full life cycle independently: framing the problem, exploring data structures, building/validating models, and ensuring reliable production deployment. You will collaborate closely with product, commercial, and engineering teams to deliver robust, outcomes-focused solutions.

Key Deliverables

• Ship ML Models: End-to-end delivery focusing on pricing, personalisation, forecasting, or user experience.
• Production & MLOps: Deploy models and set up monitoring, alerting, drift detection, and retraining cadences.
• Technical Quality: Set a high bar for code quality, testing, and model documentation while advising cross-functional teams.

Skills Required

• Tech Stack: Advanced Python, SQL, Pandas, Scikit-Learn, and XGBoost/LightGBM.
• ML Experience: Proven end-to-end delivery of live production models, including MLOps.
• Domains: Experience in 2+ areas: forecasting, segmentation, recommenders, ranking, or behavioural modelling.
• Soft Skills: Ability to translate complex technical metrics into clear business value for stakeholders.
• Desirable: Travel/marketplace sector experience; Azure ML/Microsoft Fabric; LLMs/GenAI in production.

If interested in this Senior Data Scientist Contract role please apply with latest CV for immediate review.

Applicants MUST live local to Cheshire and have RTW and be able to run through own Ltd co.

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates