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

Control\-M — deep knowledge of Control\-M (jobs, schedules, dependencies, calendars)

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)

Knowledge of AWS Lambda, EventBridge (commonly used

alongside Step Functions)

Experience in financial domain

Other

Languages

English: C2 Proficient

Seniority

Senior

London, United Kingdom of Great Britain and Northern Ireland

Req. VR\-124689

Strategy \& Design Consulting (SI)

BCM Industry

04/09/2026

Req. VR\-124689

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