Software Tester (m/f/d) – Test Design & Acceptance Testing, Mainframe IBM z/OS, ISTQB

Who We Are

Rockstardevelopers, founded in 2015 in Mannheim, with further offices in Stuttgart and Munich. We are a software and IT service provider with experience from hundreds of projects for enterprise and medium-sized clients.

Short communication channels, honest feedback, no political games. No hierarchy levels between you and the people who make decisions.

Your Tasks

You will work in the test team of a large corporation in transport and logistics. The team plans and is responsible for the overall integration and acceptance testing: New systems are integrated into a mature application landscape, which also includes mainframe applications on IBM z/OS.

• Analyze functional concepts, backlogs, and user stories in Jira and derive test scenarios and test cases from them

• Determine or generate test data based on the functional concept

• Perform functional and non-functional tests, including end-to-end across multiple systems

• Document bugs cleanly and write test reports

• Advise the business department and IT on test design and rework

Assignments are predominantly remote. On-site presence is required only a few days a year, mostly in Mainz.

Where You Will Land

Depending on the project, with large corporations, in the public sector, or with enterprise and medium-sized clients. Our clients fill these projects almost exclusively with permanent employees. Therefore, we are looking for you for permanent employment.

What You Bring

We Expect:

• More than three years of experience in test design and functional test execution

• Certification ISTQB Certified Tester Foundation Level

• Practical experience with mainframe applications (IBM z/OS, e.g., COBOL, CICS, DB2), tested in at least one project

• Several projects in which you have worked closely with business departments and IT

• Confident application of test methods, in both agile and classic projects

Advantageous (not a must):

• Experience in large, cross-application IT projects

• Experience in the railway or logistics sector

• Initial experience with AI support in writing test cases

Project Language is German

You will work in the client's team, in German, in meetings and in documentation.

What We Offer

• Predominantly remote, with an office option if you wish

• MacBook (unless the client provides their own hardware)

• Various clients, various projects

• The founders are your direct contacts

Application

Resume is sufficient. No cover letter needed. We will get in touch within a few days.

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