Job Description- This role is based in St. Louis, MO

About the job you?re considering

We are seeking a highly skilled and hands-on Senior API Tester with deep expertise in Telecom BSS/OSS systems and experience working with major telcos such as AT&T, T-Mobile, Verizon, etc. The ideal candidate will be designing, executing, and maintaining API test strategies and automation frameworks, ensuring seamless integration and performance of telecom services.

Your role

• Design and implement comprehensive API test plans, test cases, and automation scripts.
• Perform functional, regression, performance, and security testing of RESTful and SOAP APIs.
• Conduct Telecom (Mobile Postpaid/Prepaid Service) testing with strong domain knowledge.
• Execute test design, test execution, and defect management processes.
• Assess test results, identify root causes of issues, and provide detailed reports and recommendations.
• Collaborate with cross-functional teams to ensure quality and timely delivery.
• Communicate effectively with stakeholders and provide clear status updates.

Your skills and experience

• 6+ years of experience in API testing, with at least 3+ years in the Telecom domain.
• Strong hands-on experience with REST/SOAP API testing tools and automation frameworks (e.g., Postman, SoapUI, JMeter, ReadyAPI).
• Excellent analytical, communication, and problem-solving skills.
• Solid understanding of test design techniques, defect lifecycle, and CI/CD integration.
• Preferred Qualifications
  • ISTQB or equivalent testing certification is a plus.
  • Familiarity with Telecom BSS/OSS systems and integration testing.
  • Experience with performance testing tools and security validation.