SQL Data Analyst

Data Analyst (SQL / Data Quality) – Contract – London / Hybrid

Robert Half is supporting a global consulting firm in the search for a hands-on Senior Data Analyst to join a major transformation programme. This role is focused on deep data analysis, SQL investigation, and resolving data quality issues, working closely with stakeholders but primarily operating within the data itself day-to-day.

Assignment Details

• Initial 6-month contract (strong likelihood of extension)
• Start Date: 2–3 weeks (fast-track onboarding)
• Location: Hybrid (1–2 days per week in London)
• Rate: £450 p/day via FCSA-accredited umbrella

The Role

This is a heavily SQL-driven role suited to someone comfortable interrogating datasets, identifying issues, and resolving data problems across complex environments.

Key Responsibilities

• Hands-on SQL analysis of datasets to identify data quality issues, inconsistencies, and root causes
• Investigating and resolving data issues across multiple systems and data sources
• Performing data validation, reconciliation, and transformation checks
• Working on source-to-target mapping and ensuring accuracy of data flows
• Analysing complex and overlapping datasets (deduplication, cleansing, anomaly detection)
• Supporting migration and transformation workstreams with a strong focus on data accuracy
• Producing data artefacts such as data dictionaries, validation rules, and mapping documentation
• Working with BI/reporting teams to ensure data is fit-for-purpose
• Supporting data governance activities including PII, GDPR, and data controls

Required Experience

• Strong hands-on experience as a Data Analyst in data-heavy environments
• Strong SQL skills – must be confident querying and analysing data independently
• Proven experience investigating and resolving data quality issues
• Experience with data validation, reconciliation, and data cleansing
• Strong experience with data migration, mapping, and transformations
• Comfortable working with large, messy datasets across multiple sources
• Strong Excel skills
• Understanding of data structures and relationships (data models, entities)
• Practical understanding of data governance concepts (GDPR, PII, data controls)

Nice to Have

• Experience with Snowflake, Databricks or similar modern data platforms
• Exposure to MDM tools (e.g. Profisee, Ataccama)
• Financial services data experience
• Visio or process mapping tools

Additional Information: All candidates must complete standard screening (Right to Work, DBS, credit/sanctions, employment verification)