SC-Cleared Data Scientist: Entity Resolution Expert

SR2; City Of London; Hybrid; GBP 104,000 - 136,000; Part time

Job summary

SR2 is seeking a Senior Data Scientist to join a major government programme in London. You will work on a large-scale data matching engine, analysing how personal data is matched across systems and refining rules to reduce false positives and improve efficiency.

This role requires active SC clearance and offers a 3–6 month contract with hybrid onsite requirements (London). You will optimise entity resolution, improve precision/recall, and collaborate with engineering to push updates into

Qualifications

• Experience with entity resolution, record linkage or fuzzy matching.
• Strong Python experience with pandas, NumPy and scikit-learn.
• Solid SQL skills and large dataset experience.
• Experience with Elasticsearch, Kubernetes and Docker.
• Understanding of precision/recall and false positives.
• Active SC clearance required.
• Government/ defence or identity matching experience advantageous.

Responsibilities

• Analyse and optimise entity resolution and data matching performance.
• Refine, test and implement matching rules using data-driven insights.
• Improve matching accuracy, precision and recall.
• Work closely with engineering teams to deliver improvements into production.
• Support performance testing and ongoing optimisation.

Skills

Entity resolution

Python (pandas NumPy scikit-learn)

SQL

SC clearance

Data matching

AWS

Kafka

PostgreSQL

Bash

Jenkins

Ansible

Tools

Elasticsearch

Kubernetes

Docker

Job description

SR2 is seeking a Senior Data Scientist to join a major government programme in London. You will work on a large-scale data matching engine, analysing how personal data is matched across systems and refining rules to reduce false positives and improve efficiency.

This role requires active SC clearance and offers a 3–6 month contract with hybrid onsite requirements (London). You will optimise entity resolution, improve precision/recall, and collaborate with engineering to push updates into