Senior Data Engineer

Data Engineer – Payments Migration (Contract) We’re working with a leading consulting firm, who are delivery a key payments migration programme for a leading financial services firm, moving processing from a third-party provider into an in-house environment. The immediate focus is to stand up core processing and connectivity quickly, with minimal disruption — so this role needs someone who has done this before in live, high-volume systems. What you’ll be doing: • Supporting data migration activity within a payments environment • Building and executing ETL pipelines and migration runs • Troubleshooting data defects and issues • Supporting dress rehearsals and go-live • Designing safe data extraction approaches from live systems Experience required: • Proven experience delivering data migration in banking or payments systems • Strong hands-on expertise with IBM DB2 on mainframe, including: • Indexing, clustering, partitioning, archiving • Query optimisation in high-volume environments • Experience working in large-scale, high-throughput systems where: • Data extraction cannot impact live processing You’ll need to be confident with: • Data mapping and lineage • Extracting data from complex, congested tables • Reconciliation and validation of migrated datasets • Running ETL processes in controlled production environments Key considerations: • Delivering extraction with zero impact to BAU payments processing • Managing production risk carefully and pragmatically • Working in environments where systems are complex and not always well documented What matters: • Able to work independently in a fast-moving, ambiguous environment • Proactive in identifying issues early • Comfortable escalating risks clearly and quickly • Focused on delivery and getting things done safely If you’ve delivered data migration in live payments environments and understand the risks involved, this is worth a conversation.