Mainframe Tester

Company: Ascendion
Apply for the Mainframe Tester
Location: Chester
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.

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Posted: June 2nd, 2026