API Test Engineer

Job Description

Job Title: API Test Engineer

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Project Duration: 12 Months Contract

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

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

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Job Description:

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• 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.

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• 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.

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Scenarios include:

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• Positive scenarios (valid inputs)

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• Negative scenarios (invalid/missing data)

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• Boundary conditions

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• Error handling and edge cases

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Commonly referenced tools in internal materials include:

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• Postman

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• SoapUI

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• JMeter

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• Ping API

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• vREST

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An API tester needs to understand:

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• HTTP methods (GET, POST, PUT, DELETE)

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• Status codes (200, 201, 400, 401, 403, 404, 500, 429)

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• Request/response headers

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• JSON request and response bodies

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Required Skills/ Experience

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• 5+ years of system testing, writing and executing test cases

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• Application testing experience related to REST API

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• Postman

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• SoapUI

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• JMeter

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• Ping API

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• vREST

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