Lead II - Software Testing (Mainframe testing and API testing)

UST; Hyderabad; On-site; INR 800,000 - 1,400,000; Full time

Job summary

UST in Hyderabad is seeking a QA Engineer with 4+ years of experience in Mainframe Testing and API Testing to ensure high-quality software delivery.

You will test mainframe apps (CICS, DB2, IMS, VSAM, JCL), design API tests for REST and SOAP, and participate in Agile ceremonies to coordinate across teams.

Qualifications

• 4+ years of experience in Mainframe Testing and API Testing.
• Hands-on testing of mainframe applications and validating APIs.
• Experience executing end-to-end test scenarios and defect management.

Responsibilities

• Perform testing of Mainframe applications involving CICS, DB2, IMS, VSAM, and JCL.
• Validate batch processing and online transaction systems.
• Design and execute API test cases for REST and SOAP services.
• Validate request/response payloads using JSON and XML formats.
• Create and maintain test plans, test cases, and test execution reports.
• Log, track, and manage defects through closure.
• Participate in requirement reviews and Agile ceremonies.

Skills

Mainframe Testing

API Testing

Functional Testing

Job description

Role Description

We are seeking a highly skilled QA Engineer with 4+ years of experience in Mainframe Testing and API Testing. The ideal candidate should have hands‑on experience in testing mainframe applications, validating APIs, executing end-to-end test scenarios, and ensuring high-quality software delivery. The role requires strong analytical skills, defect management experience, and the ability to work in an Agile environment.

Key Responsibilities

Mainframe Testing

• Perform testing of Mainframe applications involving CICS, DB2, IMS, VSAM, and JCL.
• Validate batch processing and online transaction systems.
• Analyze requirements and prepare detailed test scenarios and test cases.
• Execute functional, integration, system, and regression testing.
• Validate file processing, data integrity, and database updates.
• Perform defect analysis and collaborate with development teams for resolution.
• Support release validation and production implementation activities.

API Testing

• Design and execute API test cases for REST and SOAP services.
• Validate request/response payloads using JSON and XML formats.
• Perform integration and end-to-end testing across applications.
• Verify API authentication, authorization, and error handling.
• Execute API regression testing and defect tracking.Review API specifications and documentation (Swagger/OpenAPI).

General QA Activities

• Create and maintain test plans, test cases, and test execution reports.
• Log, track, and manage defects through closure.
• Participate in requirement reviews and Agile ceremonies.
• Ensure adherence to quality standards and testing best practices.
• Coordinate with cross-functional teams to ensure timely delivery.

Skills

Mainframe Testing, API Testing, Functional Testing