Job Vacancy

Mainframe Integration Engineer

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Mainframe Integration Engineer

We’re supporting a major digital banking programme and looking for an experienced Mainframe Integration Engineer to help modernise mission-critical payment systems. This role sits across legacy and modern stacks - linking CICS/Db2 on z/OS with Java/Spring APIs on AWS.

This will be Hybrid London (two days a week, but flexible), Inside Ir35 and a long term contract.

What you’ll work on :-

Core Mainframe Engineering

  • Engineering CICS transactions, Db2 stored procedures and batch flows (JCL/REXX)
  • Working with MQ, VSAM, GDGs, copybooks and mainframe data structures

IBM DataPower & API Mediation

  • Configuring MPGW & WSP services
  • Implementing AAA, OAuth2/JWT, MTLS, WS-Security policies
  • Building transformations (XSLT/GatewayScript)

Mainframe and Cloud Integration

  • Integrating with AWS API Gateway / TYK
  • Building Java/Spring Boot microservices aligned to payment services

Essential experience:

  • 12+ years with z/OS, CICS and Db2
  • Strong JCL, REXX, VSAM, GDG, MQ
  • Knowledge of COBOL/Assembler (reading/debugging)
  • Experience with CICS channels, containers, pipelines and web services
  • Db2 performance tuning (BIND, EXPLAIN, RUNSTATS)

Nice to have:

  • Java 17+, Spring Boot
  • AWS (Aurora PostgreSQL, API Gateway)
  • ISO 20022, Faster Payments, BACS, CHAPS
Company
Norton Blake
Location
City of London, Greater London, UK
Posted
Apply Now
Apply Now
Company
Norton Blake
Location
City of London, Greater London, UK
Posted