IBM DataPower Engineer - Mainframe Modernization

CompanyGazelle Global

LocationLondon Area, United Kingdom

Posted At1/23/2026

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Occupation Type

Electrical engineers

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£58,700 (£30.10 per hour)

Occupation rate applies

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Description

As a – IBM DataPower engineer with mainframe Modernization experience, you will be responsible for designing and implementing secure, high-performance integration solutions using IBM DataPower Gateway to expose mainframe services (CICS, IMS, DB2, MQ) as modern APIs (REST/JSON, SOAP). Enable legacy-to-digital transformation by bridging z/OS applications with API platforms and cloud.

Your responsibilities:

Develop and configure DataPower services (MPGW, XML Firewall, WS-Proxy) for protocol mediation and security.
Implement OAuth2, JWT, TLS/mTLS, and AAA policies for secure API access.
Integrate with CICS, IBM MQ, and DB2 for backend connectivity.
Connect to database like PostgreSQL via REST/HTTP Services Via JDBC through Integration Layer, MQ or Kafka Bridge.
Perform XSLT/GatewayScript transformations and schema validations.
Automate deployments via SOMA/REST APIs, CI/CD tools (Jenkins, Ansible).
Ensure high availability, performance tuning, and compliance (PCI DSS, GDPR).

Essential skills/knowledge/experience:

Strong experience in IBM DataPower Gateway configuration and troubleshooting.

Knowledge of Mainframe integration patterns (CTG, IMS Connect, MQ).

Expertise in API security, XSLT, and GatewayScript.

Familiarity with API Connect, DevOps automation, and observability tools.

Desirable skills/knowledge/experience:

Mainframe modernization experience