API Test Engineer

Job Title

API Test Engineer

Duration

12+ Months (Possible extension)

Location

Pittsburgh, PA 15258

Onsite Role (4 days a week)

Responsibilities

• 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.
• 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

An API tester needs to understand

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

Education/Experience

• Bachelor's degree
• 3-5+ years of system testing, writing and executing test cases
• Application testing experience related to REST API
• Software/Tools: Postman, SoapUI, JMeter, Ping API, vREST