Mainframe Developer (6-Month Contract) - London (Hybrid)

We are seeking an experienced Mainframe Developer to join a prestigious financial institution on a 6-month contract. The role will focus on developing and supporting CICS web services, ZOS Connect EE, and DB2 REST interfaces within a dynamic hybrid working environment.

The ideal candidate will have strong experience with CICS web services, SOAP, WSDL, JSON, and RESTful APIs, and be comfortable working in an Agile/DevOps environment using modern toolsets.

Key Responsibilities

• Design, develop, and maintain CICS web services and ZOS Connect EE/DB2 REST services.
• Work with Mainframe development tools such as FileAid, Xpediter, IBM Explorer for ZOS, and Visual Studio.
• Develop and maintain APIs using SOAP, WSDL, and JSON, ensuring robust SOA and RESTful service integration.
• Collaborate using code repositories, bug tracking tools, and wikis (GitLab, Endevor, JIRA, Confluence).
• Implement security integration patterns including Basic Authentication, Client Authentication (mTLS), and OAuth (JWT).

What You Will Ideally Bring

• Proven experience with ZOS Connect EE and DB2 REST.
• Extensive knowledge of CICS web services.
• Java development experience, including OOP and functional programming (Java 8+).
• Familiarity with Spring Boot, annotations, and configuration for simplified deployment.
• RESTful API development experience.
• Hands-on experience with DataPower appliances.
• Development experience with XSLT, Gateway Script, and XPath.

Contract Details

• Duration: 6 months (with potential extension)
• Day Rate: Up to £430 per day (Inside IR35)
• Location: London- Hybrid Based
• Start Date: ASAP