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Posted:
June 08, 2026
Location:
Chester, Cheshire, United Kingdom
Job Description
We are looking for a Mainframe Tester with experience in testing and automating mainframe applications.
Responsibilities
* Develop and maintain automated test scripts using COBOL, JCL, and DB2.
* Design, execute, and automate test cases for functionality, performance, and security validation.
* Collaborate with developers and business analysts to understand requirements and identify test scenarios.
* Perform functional, regression, and integration testing.
* Track and report defects and support issue resolution.
Required Skills
* Experience in Mainframe Testing.
* Strong knowledge of COBOL, JCL, and DB2.
* Understanding of SDLC/STLC and testing methodologies.
* Good analytical and communication skills.
Responsibilities
* Develop and maintain automated test scripts using COBOL, JCL, and DB2.
* Design, execute, and automate test cases for functionality, performance, and security validation.
* Collaborate with developers and business analysts to understand requirements and identify test scenarios.
* Perform functional, regression, and integration testing.
* Track and report defects and support issue resolution.
Required Skills
* Experience in Mainframe Testing.
* Strong knowledge of COBOL, JCL, and DB2.
* Understanding of SDLC/STLC and testing methodologies.
* Good analytical and communication skills.
Apply for this Job
Submit your application for the Mainframe Tester position at Ascendion.
Apply Now Save for LaterJob Overview
Job Type:
Full-time
Location:
Chester, United Kingdom
Posted:
June 08, 2026
Deadline:
July 18, 2026