Mainframe and API Testing Job Holmdel New Jersey USA,IT/Tech

Location: Holmdel

Mainframe and API Testing

Lead end-to-end testing efforts for Claims E2E Transformation project implementations, enhancements, and upgrades across all applications and teams contributing to the delivered solution.
Define and manage test strategy, test plans, test cases, and test data aligned with business requirements
Responsible for preparation of detailed test cases and test scenarios based on business and functional requirements
Perform test execution across multiple phases (Functional, System, Integration, and UAT) ensuring coverage and traceability
Participate in defect triage meetings, defect analysis, prioritize based on severity/impact, and coordinate with development teams for timely resolution
Ensure test repository (test cases, test data, scripts, and artifacts) is maintained, version-controlled, and updated regularly for reusability and audit readiness
Execute batch jobs (JCL), DB validation (DB2/VSAM), CICS screen testing
Validate API request/response (status codes, headers, payloads). Handle XML/JSON validations and schema checks
Perform REST/SOAP testing using tools like Postman
Explore potential automation opportunities leveraging existing tools
Validate data integrity across systems (DB-API-downstream)
Execute regression testing cycles for each release/sprint to validate existing functionalities and prevent defect leakage
Maintain test evidence and documentation to support quality metrics, reporting, and governance requirements
Collaborate with cross-functional teams (BA, Dev, Dev Ops) for test planning, execution alignment, and release readiness

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.