Mainframe Tester

Ascendion
📍 Chester, Cheshire, United Kingdom 💼 Full-time 🕒 Posted June 06, 2026

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.

Ready to Apply?

Submit your application today and join our talented team at Ascendion.

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Job Details

  • Location Chester, Cheshire
  • Job Type Full-time
  • Category computer-and-mathematical
  • Posted Date June 06, 2026
  • Application Deadline July 16, 2026