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Payments Solution Migration Architect

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Randstad

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Location:
United Kingdom , City of London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

Payments Solution Migration Architect London | 2 Days per Week in Office £600 to £800 a day Inside IR35 5 Months Contract A top tier global consultancy firm is seeking a Payments Solution / Migration Architect to spearhead a high-stakes transition of their core transaction engine. You will essentially be the primary architect bridging the gap between legacy mainframe foundations and modern target platforms. This ideal candidate for this role will be someone who understands the granular detail of how a message moves from a gateway to clearing and settlement. You will own the end-to-end data architecture, defining the extraction strategies and migration controls required to move massive datasets without ever disrupting live payment processing. Acting as the technical authority, you will navigate complex legacy environments, reconciling undocumented system behaviours with pragmatic, executable design solutions.

Job Responsibility:

  • Spearhead a high-stakes transition of their core transaction engine
  • Be the primary architect bridging the gap between legacy mainframe foundations and modern target platforms
  • Own the end-to-end data architecture, defining the extraction strategies and migration controls required to move massive datasets without ever disrupting live payment processing
  • Navigate complex legacy environments, reconciling undocumented system behaviours with pragmatic, executable design solutions

Requirements:

  • UK Payment Rails: Expert-level BACS & Faster Payments (FPS)
  • Global Messaging: SWIFT & SEPA mastery, including ISO 20022 (MT/MX)
  • Mainframe Core: IBM DB2 specialist (Query Optimisation, Partitioning, Archiving)
  • Data Migration: Hands-on Extraction, Mapping, and Lineage for high-throughput systems
  • Risk & Governance: CASS or CISA-aligned assurance and control frameworks
  • Legacy Modernisation: Bridging MQ/Mainframe layers to modern target platforms

Additional Information:

Job Posted:
May 03, 2026

Expiration:
May 12, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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