Demo

API Tester

Highbrow LLC
Whippany, NJ Full Time
POSTED ON 1/28/2026 CLOSED ON 2/26/2026

What are the responsibilities and job description for the API Tester position at Highbrow LLC?

Job Summary

We are looking for a skilled API Tester with 4–5 years of experience in testing RESTful and/or SOAP APIs. The ideal candidate should have strong hands-on experience in API automation, backend validation, and integration testing, along with a good understanding of microservices architecture.

Key Responsibilities

  • Design, develop, and execute API test cases for functional, regression, and integration testing
  • Perform manual and automated API testing using tools like Postman, REST Assured, or similar
  • Validate API responses, status codes, headers, payloads, and schema
  • Perform backend testing using SQL queries to validate data integrity
  • Collaborate with developers and product teams to understand API requirements and business logic
  • Automate API test suites and integrate them into CI/CD pipelines
  • Conduct negative, boundary, and performance-related API testing
  • Identify, log, and track defects using tools like JIRA
  • Ensure APIs meet security, reliability, and performance standards

Required Skills & Qualifications

  • 4–5 years of experience in API testing / backend testing
  • Strong knowledge of REST APIs (SOAP knowledge is a plus)
  • Hands-on experience with Postman, REST Assured, or similar tools
  • Experience in API automation using Java/Python or equivalent
  • Solid understanding of HTTP methods, status codes, authentication mechanisms (OAuth, JWT, Basic Auth)
  • Good experience with SQL for database validation
  • Familiarity with JSON/XML payloads and schema validation
  • Experience working in Agile/Scrum environments

Salary.com Estimation for API Tester in Whippany, NJ
$58,366 to $74,672
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