Senior Migration Consultant

Project description This is a strategic data engineering engagement with our client to architect and plan the migration of their entire data processing and ETL estate from Matillion to AWS Glue — a foundational shift in how one of the world's largest financial market infrastructure companies handles its data pipelines. During this Mobilisation Phase, you'll work jointly with client's engineering teams to reverse-engineer the existing landscape, design the target-state architecture across every layer (infrastructure, data processing, workflows, dependencies, and operating model), and build the detailed delivery blueprint that will greenlight the full-scale migration. The work is technically rich and highly collaborative: you'll review and validate job inventories spanning hundreds of ETL workflows, define reusable migration patterns and templates, design a validation and reconciliation framework, run a proof-of-concept to stress-test the approach, and navigate client's rigorous internal governance — from Architectural Significance Assessments through Architectural Review Boards to a formal Gate 1 decision. This is the kind of engagement where your recommendations directly shape a multi-phase, multi-million-pound programme: the target-state framework you produce here becomes the blueprint that a larger delivery team will execute against. Perfect opportunity for combining deep data engineering knowledge with architecture leadership, stakeholder influence, and structured delivery planning inside a Tier 1 financial services environment Responsibilities

• -Wave planning — plan migration waves based on system dependencies and priorities -Complexity assessment — evaluate complexity of each workload/job prior to migration -Workload analysis — analyze existing batch processes, their dependencies, schedules, and SLAs -Orchestration migration strategy — design the strategy for migrating from Control-M to AWS Step Functions (job mapping, dependencies, triggers) -Cutover runbook — develop detailed cutover runbooks (steps, rollback points, success criteria) -Pod coordination — coordinate across multiple teams/pods involved in the migration -Release governance — manage release processes, ensuring quality and compliance with standards prior to deployment SKILLS Must have
• Large-scale migration experience — proven track record on enterprise-scale migration projects Wave planning — hands-on experience planning waves in multi-system migrations AWS Step Functions — hands-on experience designing and building workflows in Step Functions Risk assessment — experience identifying and mitigating risks in migration projects Data reconciliation — experience validating data/results post-migration (before/after comparison) Release management — experience managing releases in an enterprise environment Nice to have Experience with other orchestration tools (Airflow, AWS Glue Workflows) AWS certification (Solutions Architect / DevOps Engineer) Experience in financial domain Control-M — deep knowledge of Control-M (jobs, schedules, dependencies, calendars)