Senior Data Engineer - Contract
Senior Data Engineer (Financial Services), London Rate: up to £600 per day (Outside IR35)Length: 6 months inital, possibility of extension, starting June 2026. Working Pattern: 2 days on-site (Liverpool St.) per week. Opus are working with a leading financial services firm who're decommissioning their legacy on-prem data warehouse and migrating all critical workloads to Snowflake on AWS. They need a contract Senior Data Engineer to rebuild pipelines, refactor legacy ETL, and ensure a clean cutover for regulatory and analytics teams. You'll be joining an existing team of 3 Data Engineers and one Architect who're working on this project. Responsibilites:
- Snowflake migration - Rebuild models, schemas, and ELT pipelines
- AWS data engineering - Glue, Lambda, S3, Step Functions
- Legacy decommissioning - Analyse ETL, lineage, dependencies
- Data reconciliation - Validate parity between old and new platforms
- Strong Snowflake and AWS senior engineering experience
- Excellent Python and SQL
- Ideally, a background in financial services
- Experience migrating l egacy data warehouses