Salary: £104,000 - 117,600 per year Requirements: Experience working in ZOS connect EE and DB2 Rest with extensive knowledge in CICS webservices Development experience using FileAid, Xpeditor, IBM explorer for ZOS, Visual Studio Proficient with SOAP, WSDL, and JSON Comprehensive understanding of SOA and Restful APIs Experience working with code repositories, bug tracking tools, and wikis such as Gitlab, Endevor, JIRA, Confluence Knowledge of different security integration patterns like basic authentication, client authentication (MATLS), and Oauth(JWT) Experience in DevOps and Agile methodologies, including CICD practices and tools like Jenkins Strong foundation in Java including OOP and functional programming (Java 8) Familiarity with Spring Boots annotations and configuration Restful API development experience Hands-on experience using DataPower appliances Development experience using XSLT, Gateway Script, and XPath Responsibilities: Develop and maintain mainframe applications utilizing CICS webservices Collaborate with cross-functional teams to ensure seamless integration of web services Engage in Agile sprint planning and execution activities Utilize various tools for code management and issue tracking Ensure code quality through effective testing and documentation practices Implement security measures and best practices in application development Contribute to CI/CD pipeline setup and management Participate in team meetings to report on progress and challenges Technologies: API CI/CD Confluence DevOps GitLab IBM JIRA JSON JWT Java Jenkins OAuth OOP REST SOAP Security Spring Visual Studio WebServices Web Spring Boot More: We are seeking a skilled Mainframe Developer with expertise in CICS webservices to join our team in London on a hybrid working model. This is a contracting position for a duration of 6 months, requiring in-office attendance 2-3 days a week. We offer a collaborative work environment focused on innovative solutions and professional growth while utilizing modern methodologies and tools. Join us to leverage your expertise and contribute to impactful projects. last updated 14 week of 2026