Senior Data Engineer
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
Design, build, and maintain ETL/ELT pipelines on AWS
Migrate existing data pipelines and workloads from legacy/on\-prem systems to AWS
Develop and optimize data models for data warehouse/data lake (Redshift, S3\)
Build and orchestrate data workflows (Glue, Step Functions, Lambda, EMR)
Implement data quality checks, validation, and reconciliation processes
Optimize pipeline performance and manage compute/storage costs
Ensure data security and access control (IAM, KMS, encryption)
Monitor and troubleshoot pipeline failures (CloudWatch, logging)
Collaborate with data analysts, BI developers, and architects on data requirements
Document data pipelines, architecture, and operational runbooks
Skills
Must have
5\+ years of experience
Hands\-on experience building data pipelines on AWS (Glue, EMR, Lambda, Step Functions)
Strong SQL and experience with data warehousing (Redshift, dimensional modeling)
Proficiency in Python or Scala for data engineering
Experience with S3\-based data lake architecture (partitioning, cataloging, formats like Parquet)
Experience migrating data pipelines from on\-prem or other cloud platforms
Understanding of data governance, security, and access control on AWS
Experience with CI/CD for data pipelines
Nice to have
AWS certification (Data Analytics Specialty or Data Engineer Associate)
Experience with streaming data (Kinesis, MSK/Kafka)
Familiarity with Infrastructure as Code (Terraform/CloudFormation)
Experience with orchestration tools (Airflow, dbt)
Experience in financial domain
Other
Languages
English: C2 Proficient
Seniority
Senior
London, United Kingdom of Great Britain and Northern Ireland
Req. VR\-124691
Strategy \& Design Consulting (SI)
BCM Industry
07/09/2026
Req. VR\-124691
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