💼 Full-Time Position

Mainframe Tester

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Ascendion
📍 Chester, Cheshire, United Kingdom
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Location
Chester, United Kingdom
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Posted
May 23, 2026
Type
Full-Time
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Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

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.