Senior Test Automation Engineer validating payment applications and backend services at Expleo. Contributing to API and business flow testing in Agile environments.
Responsibilities
Design, implement, and maintain automated tests for APIs, backend services, and integrated systems
Validate REST and SOAP services, payloads, contracts, and business flows
Build and improve reusable automation frameworks and testing assets
Work closely with developers, analysts, and DevOps engineers in Agile teams
Support and strengthen quality gates in CI/CD pipelines
Investigate defects, coach teams on quality practices, and improve test coverage across critical business flows
Contribute to functional, integration, and non-functional validation activities
Help improve release confidence in transaction-oriented systems
Requirements
More than 5 years of experience in test automation or software quality engineering
Strong knowledge of a JVM language such as Java or Kotlin
Strong understanding of REST APIs, XML, and JSON
Experience with API testing tools such as Postman, Bruno, RestAssured, or similar
Good understanding of SQL and databases
Familiarity with Linux and shell scripting
Experience with GitLab
Exposure to Docker
Experience working in Agile delivery teams
Previous experience in payments, banking, fintech, or other integration-heavy transaction platforms
Strong English communication skills
JavaScript / TypeScript exposure is desired
Understanding of asynchronous flows and integration-heavy architectures
Familiarity with validation practices in regulated systems
Knowledge of payment transaction flows, merchant APIs, or financial service integrations
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