API Test Engineer

Job Title: API Test Engineer

Project Duration: 12 Months Contract

Work Location: Pittsburgh, PA 15258, Lake Mary, FL 32746 & New York, NY 10166

(Onsite at least 4 days per week in office work)

Job Description:

• We are seeking an experienced API Test Engineer to design, execute, and automate testing for REST‑based APIs supporting mission‑critical, bi‑directional system integrations. This role focuses on service‑level testing and plays a key part in ensuring API reliability, security, and readiness for production.
• The ideal candidate has a strong understanding of REST APIs, hands‑on experience with API testing tools, and the ability to translate technical requirements into robust test scenarios across functional, negative, and integration cases.

Scenarios include:

• Positive scenarios (valid inputs)
• Negative scenarios (invalid/missing data)
• Boundary conditions
• Error handling and edge cases

Commonly referenced tools in internal materials include:

• Postman
• SoapUI
• JMeter
• Ping API
• vREST

An API tester needs to understand:

• methods (GET, POST, PUT, DELETE)
• Status codes (200, 201, 400, 401, 403, 404, 500, 429)
• Request/response headers
• JSON request and response bodies

Required Skills/ Experience

• 5+ years of system testing, writing and executing test cases
• Application testing experience related to REST API
• Postman
• SoapUI
• JMeter
• Ping API
• vREST