[FBO] Test Engineer – Regression Testing and Test Automation - Freelance

Mission context

The Test Engineer – Regression Testing and Test Automation - has the mission to ensure faster, quality releases, adopting effective regression testing in Agile and DevOps practices ensuring timely delivery of high-quality products to the market as all features are tested end-to-end.

Function description

Your mission will be to manage tests from creating test plans, test cases in Octane, developing automated tests, conduct integration tests, support business acceptance tests. You will collaborate closely with developers, your product owner, and DevOps Teams to enhance test coverage, reduce manual testing efforts, and accelerate delivery while maintaining high standards of software quality.

• Plan, execute and support the different instances of Testing (Integration, Regression, Business Acceptance)

• Develop automates tests using Java, Rest-Assured, and Cucumber (BDD approach) to validate backend services for mortgage loan processing.

• Develop comprehensive test suites covering functional, regression, and contract testing for RESTful APIs, ensuring alignment with business requirements and technical specifications.

• Integrate the framework with CI/CD pipelines (e.g., Jenkins, GitHub Actions) to enable automated test execution in Agile sprints.

• Define and maintain test data strategies, including mocking external dependencies (e.g., mainframe APIs) to ensure isolated and reliable test execution.

• Analyze API responses for correctness, performance, and security, including validation of status codes, response payloads, headers, and error handling.

• Collaborate with developers to identify and troubleshoot defects, providing clear reproduction steps and logs for efficient resolution.

• Act as a quality advocate within the squad, promoting shift-left testing and test-driven development (TDD/BDD) practices.

• Participate in Agile ceremonies (refinement, planning, retrospectives) to contribute to testability improvements and risk mitigation strategies.

• Work with Product Owners to refine acceptance criteria and translate business rules into executable test scenarios (Gherkin).

• Monitor and report on test coverage metrics, defect trends, and automation efficiency to drive continuous improvement.

• Mentor junior team members on API testing best practices, tooling (e.g., Insomnia, Swagger), and automation techniques.

• Stay updated on emerging testing tools and methodologies and propose innovations to the squad.

Education

• Master or equivalent by experience

Certification

• Certifications in testing (e.g., ISTQB, Agile Testing) or API technologies (e.g., Rest-Assured, Insomnia) are a plus.

Languages

Requirement

• French: not required but nice-to-have

• Dutch: not required but nice-to-have

• English: Fluent

Travel

• N/A

Telework

• Expectation: 50% on site & 50% homeworking

Required knowledge / Experience

Experience

• 5+ years of experience / seniority in IT Testing

Technical Experience

Mandatory

• 5+ years of experience in API test automation using Java, Rest-Assured, and Cucumber.

• Strong background in functional, regression, and integration testing for APIs.

• Ability to design test cases covering positive/negative scenarios, edge cases, and data-driven testing.

• Experience with mocking frameworks (e.g., Mockito, WireMock) to simulate dependencies.

• Hands-on expertise with RESTful APIs, including request/response validation, authentication (e.g., OAuth2, Basic Auth), and error handling.

• Proficiency in Java 8+ and Spring Boot for backend testing and mocking.

• Experience with version control (Git) and CI/CD tools (Jenkins, GitHub Actions).

Preferable

• Knowledge of Swagger/OpenAPI for API documentation and contract testing.

• Familiarity with databases (Oracle) and mainframe integrations (advantageous).

• Basic understanding of performance testing and security testing (OWASP principles).