QA Automation Engineer

📆 Duration: Until 16.04.2027

Project

Join a project focused on API migration and validation, ensuring functional and performance parity between existing MuleSoft APIs and their new implementations in Quickwork. The role involves designing and executing automated API tests, validating end-to-end business flows, conducting performance tests, and supporting User Acceptance Testing (UAT).

The main objective is to ensure that migrated APIs behave consistently, meet performance requirements, and do not negatively impact existing integrations.

You will

• Design and execute automated API tests using Postman and Newman
• Compare API responses between MuleSoft and Quickwork to verify functional parity
• Develop automated tests using RestAssured, pytest-requests, or equivalent tools
• Perform performance testing using JMeter, k6, or Gatling
• Design regression and end-to-end tests for business flows
• Integrate automated tests into GitLab CI/CD pipelines
• Execute UAT tests and document results
• Analyse API performance and investigate defects

Must have

• At least 5 years of experience in API integration testing
• Practical experience with API migration or parity testing
• Strong knowledge of Postman and Newman
• Experience with RestAssured, pytest-requests, or equivalent tools
• Hands-on experience with JMeter, k6, or Gatling
• Experience with GitLab CI/CD and test automation
• Knowledge of OpenAPI 3.0 and API test design
• Experience with regression testing and end-to-end scenarios
• Ability to analyse test results and prepare test reports
• Fluent in English and Polish

Nice to have

• Experience with MuleSoft and QuickWork
• Knowledge of Pact or other contract testing tools
• Experience with TM Forum Open APIs or MEF Sonata APIs
• German language skills

Tech stack

Web API, API migration, Postman, Newman, GitLab CI, OpenAPI, Rest Assured