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 platformsRequirments: 

Strong Snowflake and AWS s...