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Marlabs · 20 hours ago

Cobol Test Engineer

Washington, DC

Full-time

Onsite

New Grad, Entry Level

Marlabs is seeking a COBOL/JCL Test Engineer with hands-on mainframe testing experience. The role focuses on assessing and validating the effectiveness of AI-assisted testing and development outputs, comparing traditional testing approaches with AI-enabled outcomes to measure quality, accuracy, and productivity improvements.

Management Consulting

No H1B

Security Clearance Required

U.S. Citizen Only

Hiring Manager

Harjeet Singh

Responsibilities

Execute functional, regression, and batch testing for COBOL programs and JCL jobs on mainframe environments

Validate AI-generated test cases, test data, and defect identification against manual and baseline results

Establish JCL and batch test scenarios to evaluate AI effectiveness in test coverage and defect detection

Analyse discrepancies between AI-assisted outputs and expected mainframe behaviour

Document test results, variances, and insights to support AI benchmarking and reporting

Collaborate with QA, mainframe SMEs, and AI enablement teams to refine validation approaches

Qualification

COBOLJCLMainframe testingAI-assisted testingCollaboration

Required

Hands-on mainframe testing experience

Experience with COBOL programs and JCL jobs

Ability to execute functional, regression, and batch testing

Experience validating AI-generated test cases and test data

Ability to establish JCL and batch test scenarios

Experience analyzing discrepancies between AI-assisted outputs and expected mainframe behavior

Ability to document test results, variances, and insights

Collaboration skills with QA, mainframe SMEs, and AI enablement teams

Preferred

Public trust clearance

Company

Marlabs

Glassdoor3.6

Marlabs is your trusted AI transformation partner with 30 years of experience solving modern challenges, with a proven track record of delivering complex technology solutions to Fortune 500 clients across financial services, life sciences, healthcare, manufacturing, telecom, media, technology, and other industries.

Founded in 1996

New York, New York, US

1001-5000 employees

https://www.marlabs.com/

Funding

Current Stage

Late Stage

Leadership Team

Todd Keller

Chief Operating Officer

Gaurav Gupta

Head- Channels & Strategic Partnerships

Recent News

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