API Testing | API Functional

Job Title: API Functional Tester

Job Summary

Key Responsibilities

• Understand product requirements, business workflows, and user stories to design effective API test scenarios.
• Perform end-to-end API Functional Testing using tools such as Postman, Swagger, or similar.
• Design, execute, and maintain API test cases covering positive, negative, boundary, and error-handling scenarios.
• Validate API request/response payloads, status codes, headers, authentication, and business rules.
• Perform response schema validation and verify backend data using SQL queries where applicable.
• Identify, log, track, and retest defects through their lifecycle using defect management tools.
• Participate actively in Agile ceremonies including sprint planning, daily stand-ups, sprint reviews, and retrospectives.
• Collaborate with developers, business analysts, product owners, and other stakeholders to ensure high-quality deliverables.
• Work independently while effectively coordinating with global teams and client stakeholders.
• Provide regular test execution updates, risks, and quality metrics to project stakeholders.

Required Skills

• 5+ years of experience in API Functional Testing.
• Strong understanding of REST APIs, HTTP methods, status codes, request/response validation, and authentication mechanisms (Bearer Token, OAuth, JWT, API Keys).
• Hands-on experience with API testing tools such asPostman,Swagger, orSOAP UI.
• Experience in designing API test scenarios from business requirements and user stories.
• Good knowledge of JSON, XML, and API response validation.
• Strong SQL skills for backend data validation.
• Good understanding of Software Testing Life Cycle (STLC) and defect lifecycle.
• Experience working in Agile/Scrum methodology.
• Excellent analytical, troubleshooting, and problem-solving skills.
• Strong verbal and written communication skills.
• Ability to work independently and directly with client stakeholders.
• Experience working in a global delivery environment.

Preferred Skills

• Knowledge of API automation tools such as REST Assured or similar frameworks.
• Experience with JIRA, Confluence, Git, or Jenkins.
• Basic understanding of CI/CD pipelines.

Interview Process

• Round 1: Virtual Interview
• Subsequent Rounds: Candidates will be required to attend at least oneface-to-face interview