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Experis

API Tester (Postman Expert)

Experis, Ashburn

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Job Title: API Tester (Postman Expert)
Location: Hybrid - Vienna, VA (Onsite 3 days/week)
Client & Project: Navy Federal Credit Union - Core Banking Modernization
Team: Data & AI
About the Client & Project
Join the Data & AI team supporting the Core Banking Modernization initiative for Navy Federal Credit Union , a premier financial institution dedicated to serving members of the military and their families. This program focuses on transitioning from legacy banking systems to a modern, cloud-native platform.
Role Overview
We are looking for an experienced API Tester to ensure high-quality delivery of API solutions. The ideal candidate will play a hands-on role in test planning, execution, and automation within a CI/CD environment, collaborating across API and mainframe teams to facilitate seamless modernization.
Key Responsibilities
  • Design and execute test plans, test cases, and automated API tests using Azure DevOps
  • Perform API testing using Postman and SoapUI (build test collections, manage tokens, write scripts)
  • Interpret and test API schemas (YAML files), ensuring all dependencies are covered
  • Support CI/CD pipeline integration for automated testing
  • Collaborate with cross-functional teams to align requirements, conduct user story validation, and support customer acceptance testing
  • Work with tools such as SwaggerHub , GitHub , and Azure DevOps
  • Coordinate migration efforts from legacy APIs to the new modernized platform
Must-Have Skills
  • Strong hands-on experience with Postman (writing test scripts, managing tokens, etc.)
  • Proficiency in API schema interpretation (YAML)
  • Experience with SoapUI , SwaggerHub , and GitHub
  • Familiarity with CI/CD pipelines and Azure DevOps
  • Experience with automated API testing strategies
Work Arrangement
  • Hybrid - Must be onsite in Vienna, VA 3 days per week