Senior SDET Engineer - Mainframe Automation Testing

Senior SDET Engineer (Mainframe Automation Testing)

Location: 100% Remote

Duration: 6+ Month Contract

USC and GC

Visa: H1B Transfers Acceptable | No H4, OPT, CPT

We are seeking a highly skilled Senior SDET Engineer to join a technology team supporting critical retirement and institutional custody platforms. This role is ideal for a quality-focused engineer with strong Mainframe testing expertise who is passionate about automation, validation, and delivering high-quality software solutions within complex enterprise environments.

As a member of a collaborative Agile team, you will be responsible for designing and executing testing strategies, building automation frameworks, validating large-scale data processing, and ensuring the quality and reliability of mission-critical applications.

Responsibilities

• Design, develop, and execute comprehensive test strategies for Mainframe applications.

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• Build and maintain automated testing solutions for enterprise systems.
• Perform functional, integration, regression, and end-to-end testing.
• Validate data accuracy across large datasets and complex batch processes.
• Analyze requirements and translate them into detailed test scenarios and test cases.
• Collaborate closely with developers, product owners, and business stakeholders to ensure quality throughout the SDLC.
• Identify, document, track, and drive resolution of software defects.
• Participate in Agile ceremonies including sprint planning, backlog refinement, and retrospectives.
• Contribute to continuous improvement initiatives around testing processes, automation, and quality engineering standards.
• Mentor junior QA and SDET team members.

Required Qualifications

• 8+ years of Software Testing, QA Engineering, or SDET experience.
• Bachelor's Degree in Computer Science, Engineering, Information Technology, or related discipline.
• Strong Mainframe testing experience including:
• COBOL
• DB2
• JCL
• VSAM
• SQL
• SPUFI
• IBM Utilities

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• Experience validating Mainframe batch processing and data integrity.
• Strong understanding of test planning, test execution, defect management, and quality assurance methodologies.
• Experience with:
• File-Aid
• CICS
• Control-M
• Endevor
• Eztrieve
• Experience working in Agile/Scrum environments.
• Strong troubleshooting, root cause analysis, and problem-solving skills.
• Excellent written and verbal communication skills.

Preferred Qualifications