Data Architect – Mainframe Migration & Modernisation (Contract)

We’re recruiting an experienced Data Architect to lead a critical mainframe data migration and modernisation programme for a large enterprise environment. This is a hands-on, delivery-focused role working on complex Db2 on z/OS systems and migrating data to modern cloud-based relational platforms.

You’ll be responsible for designing and delivering Change Data Capture (CDC) pipelines, ensuring accurate, low-risk data movement with zero-surprise cutovers. The role involves deep involvement across data modelling, integration architecture, validation, reconciliation, and event-driven design.

Key Responsibilities

* Design and operate CDC pipelines (IBM CDC, Precisely or equivalent)

* Migrate data from Db2 / mainframe (z/OS) to PostgreSQL / Aurora

* Build Kafka-based integration pipelines and event-driven architectures

* Deliver dual-run migrations, cutover planning, rollback and reconciliation

* Perform logical and physical data modelling (OLTP and analytics trade-offs)

* Ensure strong data quality, validation and governance controls

Essential Skills

* Proven experience as a Data Architect or Data Migration Architect

* Strong Db2 and mainframe (z/OS) knowledge

* Hands-on CDC design and delivery

* Kafka and event-driven integration experience

* PostgreSQL / Aurora data modelling

* Strong SQL and data validation mindset

Nice to Have

* IBM CDC / Precisely

* COBOL copybooks or VSAM exposure

* Financial services or large-scale enterprise environments

This role suits a senior, hands-on architect who enjoys owning complex data migrations end to end