Senior Data Engineer (Payments and FinTech)Location: Hybrid - 1-2 days a week in LondonSalary: 80-90k + 10% BonusJob Type: PermanentSponsorship: Not Available Role Summary:We are looking for a Senior Data Engineer to support a multi-system, multi-client, company-wide migration. In this role, you will work closely with owners of legacy platforms to understand their data, then design and build the queries and processes required to migrate it into a new environment. As migration work concludes, the role will transition into leveraging Airflow and other tooling to automate operational and financial processes. This position requires a highly collaborative individual, as you will work closely with engineers and stakeholders across multiple teams. Key Responsibilities:Collaborate with engineers across legacy systems to understand available data and its structure.Design queries and scripts to extract, transform, and migrate data into new platforms.Partner with senior data leadership to define cold-storage solutions for regulatory data retention.Work with solution architects to design migration-day data processes for partner onboarding.Build and maintain ETL pipelines and workflow automation using Snowflake and Apache Airflow.Document processes, learnings, and development work using version control best practices.Implement robust data quality checks and reconciliation processes throughout pipelines.Collaborate with platform and infrastructure teams on security, access control, and sec