IBM DataPower Engineer – Mainframe Modernisation (Contract) We’re recruiting for an experienced IBM DataPower Engineer to support a large-scale mainframe modernisation programme within a complex enterprise environment. This is a contract role, ideal for specialists in secure API integration and legacy-to-digital transformation. The Role You’ll design, build and support high-performance integration solutions using IBM DataPower Gateway, exposing core mainframe services as modern APIs. Working across hybrid environments, you’ll bridge z/OS applications with API platforms and cloud-native services, ensuring security, resilience and scalability. Key Responsibilities \* Design and configure IBM DataPower services (MPGW, XML Firewall, WS-Proxy) \* Expose CICS, IMS, DB2 and MQ services via REST/JSON and SOAP APIs \* Implement API security including OAuth2, JWT, TLS/mTLS and AAA policies \* Deliver XSLT and GatewayScript transformations and schema validation \* Integrate with backend platforms including MQ, Kafka and relational databases \* Support CI/CD automation using SOMA/REST APIs, Jenkins or Ansible \* Ensure high availability, performance tuning and regulatory compliance (e.g. PCI, GDPR) Required Skills \* Strong hands-on experience with IBM DataPower Gateway \* Proven mainframe integration experience (CICS, IMS Connect, MQ, CTG) \* Deep knowledge of API security, XSLT and GatewayScript \* Experience with API management platforms and DevOps automation \* Background in mainframe or legacy system modernisation projects Contract Details \* Contract role \* Hybrid working \* Competitive day rate \* Initial 6-month engagement Apply now if you’re a DataPower specialist looking to deliver impactful mainframe modernisation work within a high-profile programme