Customer Loyalty/ Transaction Lead Data Scientist

NES Fircroft; United Kingdom; Remote; GBP 70,000 - 110,000; Full time

Job summary

NES Fircroft is seeking a Lead Data Scientist for Customer Loyalty, Incrementality and Value Measurement on a 12-month contract. The role is remote in the UK, with Inside IR35 via umbrella. Start ASAP, 40 hrs per week.

You will own analytics spanning customer and transaction data, CLV/RFM segmentation, and value estimates, delivering production-ready insights and dashboards. The ideal candidate has strong SQL/Python, experience with Databricks/PySpark, data governance, and familiarity with Delta

Qualifications

• Advanced SQL for high-volume customer, payment, loyalty and transaction analysis.
• Python-based statistical analysis for cohort and uplift modelling.
• Hands-on Databricks/Spark or PySpark notebooks and Delta tables workflows.
• Git/Azure DevOps with PRs and controlled production changes.
• Strong data-validation, reconciliation and audit-trail practices.

Responsibilities

• Lead Data Scientist role focusing on SCI/customer analytics, incrementality and CLV/RFM.
• Bridge between SCI customer and transaction data with governance.
• Develop reproducible data products and productionised analytics.

Skills

Advanced SQL

Python (statistics)

Databricks/PySpark

Git/Azure DevOps

Data validation

Loyalty/CRM domain

Power BI

Delta MERGE

Experimentation

Customer decisioning

Tools

Delta tables

PySpark notebooks

Azure DevOps pipelines

Job description

Customer Loyalty/ Transaction Lead Data Scientist– 12 Months Contract – Remote

Inside IR35 via umbrella

Remote

Must be eligible to work in the UK

Start ASAP

40 hrs week

Must Have: Advanced SQL for high-volume customer, payment, loyalty and transaction analysis. Strong Python for statistical analysis, matching, weighting, cohort analysis and reproducible data products. Hands-on Databricks/Spark or PySpark experience for notebooks, Delta tables, workflows and scheduled analytical pipelines. Working proficiency with Git/Azure DevOps, pull requests and controlled production changes. Strong data-validation, reconciliation and audit-trail practices. Nice to have: Loyalty economics, retail fuel/convenience or CRM-domain experience. Power BI or certified reporting-layer experience. Production pipeline design beyond analytical notebooks, including Delta MERGE, idempotency and incremental processing. Experimentation or uplift-model validation experience. BNA or customer-decisioning exposure.

MUST HAVE high-volume customer, payment, loyalty and transaction analysis

Data Scientist Role Overview:

Lead Data Scientist - Customer Intelligence, Incrementality & Value Measurement Primary focus: SCI/customer analytics, incrementality, CLV/RFM, customer and margin reconciliation, dampening methodology, scenario planning and multi-market value measurement. The role owns the analytical bridge between SCI customer and transaction data, CLV/RFM segmentation, incrementality methodology, Finance margin assumptions and leadership-facing value estimates. It must be able to determine not only the result, but why sources differ, whether the estimate is methodologically defensible, and how it can be reproduced and operationalised.

With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining andManufacturingsectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.