Data Architect – Mainframe Migration & ModernizationDCV Technologies • London, England, United Kingdom

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Data Architect – Mainframe Migration & Modernization

DCV Technologies

London, England, United Kingdom

London, England, United Kingdom

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London – Bishopsgate (Hybrid – 2 days onsite) 📄 B2B Contract | ⏳ 6 Months+ 💰 Rate: Market Rates - Inside IR35 Our client, a global leader in IT services, consulting, and business solutions is urgently seeking an experienced Mainframe Data Architect with strong data migration expertise to lead a critical modernization initiative focused on migrating data from legacy mainframe systems to modern cloud-based platforms. This role is pivotal in ensuring a seamless, low-risk transition with robust Change Data Capture (CDC), accurate data transformation, and zero-disruption cutover execution. You will work at the intersection of architecture, engineering, and governance to design scalable data migration strategies and ensure enterprise-grade reliability. Key Responsibilities * Design and implement Change Data Capture (CDC) pipelines using IBM CDC tools (or equivalents), including subscription management, bookmark handling, and replay strategies * Lead complex data transformations including EBCDIC to UTF-8 encoding and packed decimal conversions with validation frameworks * Architect and implement schema conversion and migration tooling for downstream analytics platforms (Glue, Athena, Redshift) * Develop infrastructure-as-code solutions using Terraform and implement CI/CD pipelines via GitLab * Plan and execute production cutovers with dual-run validation, reconciliation frameworks, rollback strategies, and governance controls * Establish data governance standards including masking, encryption, IAM policies, and compliance controls * Build observability dashboards (lag, throughput, error rates, cost) using CloudWatch, Grafana, and operational alerting frameworks * Implement pre-migration validation tests and post-migration reconciliation against golden source systems * Apply Domain-Driven Design (DDD) principles to design optimized data models and bounded contexts * Produce architectural documentation covering end-to-end migration strategy and data lifecycle Required Skills & Experience * Proven experience migrating data from mainframe environments to cloud platforms * Strong hands-on expertise with IBM CDC (or similar replication tools) * Deep understanding of mainframe data formats (EBCDIC, packed decimals, COBOL copybooks) * Experience with AWS data services (Glue, Athena, Redshift) * Strong Infrastructure-as-Code experience using Terraform * CI/CD implementation experience (GitLab preferred) * Experience with observability and monitoring (CloudWatch, Grafana) * Expertise in data reconciliation, validation frameworks, and data quality assurance * Strong understanding of data governance, security, and compliance * Solid knowledge of Domain-Driven Design and modern data modelling practices If you are a seasoned Data Architect with deep mainframe migration experience and a passion for modernization, we would like to hear from you

London, England, United Kingdom

Sprachkenntnisse

English

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