Test Engineer Mainframe

Unum • Portland, ME

4d

About The Position

Our Fortune 500 company is driving a digital transformation and looking for forward-thinking innovators to disrupt how our industry thinks about and uses technology. As one of the world's leading employee benefits providers, we help millions of people gain affordable access to benefits that help them protect their families, their finances and their futures. Are you an asker of questions, a solver of problems, and a challenger of the status quo? Our mission is to provide a differentiated customer experience and exceed the expectations people have of technology at any company — not just insurers. We are seeking individuals to join our team of talented IT professionals who share never-ending passion and an unwavering focus on our customer experience. Team members comfortable working in an agile, fast-paced, and delivery-focused environment thrive in our environment where we value an entrepreneurial spirit and those who challenge the status-quo. Unum is changing, and we’re excited about what’s next. Join us. General Summary: The Mainframe Test Engineer is responsible for performing hands-on, manual testing to ensure the quality, accuracy, and stability of enterprise mainframe applications that support core business operations. This role focuses exclusively on validating system functionality, data integrity, and processing outcomes across complex batch and online mainframe environments. The Test Engineer works closely with mainframe developers, business analysts, and production support teams to understand system changes, execute detailed test scenarios, analyze results, and confirm that solutions meet business and technical requirements before being released to production.

Requirements

• Bachelor’s degree preferred, or equivalent relevant experience
• 2+ years of experience in a Test Engineer, QA Analyst, or similar role supporting mainframe applications
• Hands-on experience testing mainframe systems (e.g., COBOL, JCL, DB2, IMS, VSAM)
• Experience validating batch jobs, online transactions, and downstream data impacts
• Strong understanding of mainframe development and release lifecycles
• Experience working in Agile delivery environments
• Ability to analyze complex data flows, job dependencies, and system integrations
• Strong attention to detail, problem-solving skills, and documentation practices

Responsibilities

• Design, execute, and document test cases for mainframe applications supporting both batch and online processing
• Validate functional requirements, data integrity, and system behavior across upstream and downstream integrations
• Perform testing for enhancements, defect fixes, regulatory changes, and production support initiatives
• Analyze batch job results, file outputs, database updates, and error conditions to confirm expected outcomes
• Partner closely with mainframe developers to understand technical changes and ensure appropriate test coverage
• Collaborate with business analysts and stakeholders to clarify requirements and expected results
• Identify, document, and track defects through resolution, validating fixes prior to production deployment
• Support release and deployment activities by executing regression testing and production validation as needed
• Contribute to continuous improvement of testing processes, standards, and documentation within the team
• Provide testing estimates and input during planning and prioritization discussions

Benefits

• onsite fitness facilities
• generous paid time off
• employee professional development programs
• healthcare benefits (health, vision, dental)
• insurance benefits (short & long-term disability)
• performance-based incentive plans
• paid time off
• 401(k) retirement plan with an employer match up to 5% and an additional 4.5% contribution whether you contribute to the plan or not

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Number of Employees: 5,001-10,000 employees