Senior QA Engineer - IBM z/OS & Mainframe Automation

Cloud Software Group, LLC; Colorado; On-site; USD 143,000 - 215,000; Full time

Job summary

Cloud Software Group is seeking an experienced QA Engineer to join our team focusing on IBM z/OS and IBM CICS applications. You will design and execute test plans, develop automation suites, and drive quality across Linux/Windows platforms, with emphasis on mainframe transactions and multi‑platform messaging.

Responsibilities include collaborating with product management, translating requirements into test cases, and maintaining documentation.

Qualifications

• A minimum of 8 years of QA testing on IBM z/OS, IBM CICS and Linux/Windows.
• BE/ME/MTech in Computer Science or relevant experience.
• Good understanding of IBM CICS, CICS applications and basic transactional implementations.
• Working knowledge of IBM z/OS, JCL, IBM Procedures, ISPF and mainframe operational executions and commands.
• Experience in QA testing with transactional products such as Substation ES, IBM MQ or IBM XCF.
• Extensive experience in multiplatform messaging such as TIBCO EMS/JMS, Apache Pulsar/Kafka.
• Very good understanding of UI frameworks, visual design testing and front end automation tools. Selenium or Cypress experience required.

Responsibilities

• Understand software quality best practices, test strategy and planning, test case development, test case deployment and execution, test data, defect tracking, and test automation, identify product defects, debug issues and report them to defect tracking system
• Experience working with Agile methodologies
• Work with product management and development teams to understand the requirements and features, and to translate them into functional unit and pipeline QA tests
• Work independently with minimum supervision
• Debug test failures and help identify the root cause of failures
• Develop and maintain automation Test Suites, Test Plans and Test Specifications
• Create and run manual tests for scenarios that are too complex to automate
• Review, update and ensure user acceptance for product documentation
• Work with remote teams, communicate status, schedule effectively and clearly
• Escalate issues in time and able to follow up for their status

Job description

Cloud Software Group is seeking an experienced QA Engineer to join our team focusing on IBM z/OS and IBM CICS applications. You will design and execute test plans, develop automation suites, and drive quality across Linux/Windows platforms, with emphasis on mainframe transactions and multi‑platform messaging.

Responsibilities include collaborating with product management, translating requirements into test cases, and maintaining documentation.