First seen by Alion on Oct 9, 2026.
📆 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
Our offer
Relocation package (4500 PLN total value), paid in three installments (1500 PLN per month) in case your permanent presence in the office is mandatory and you need to relocate from another city
Benefits: Extended medical care (over 2000 medical facilities in Poland, 80 in Kraków) for you and your family; Multisport Benefit card; life insurance
Tech stack
- API
- Postman
- Newman
- REST Assured
- GitLab
- OpenAI

