QA Automation Engineer

Nuvei

Sofia, Bulgaria

Your Mission

We are looking for an experienced and detail-oriented QA Automation Engineer to join our Rest API QA Automation team. This is a maternity cover.

In this role, you will be responsible for designing, developing, and maintaining reliable integration and end-to-end automation for a complex, distributed system built around REST APIs, messaging, and database interactions. You will work closely with developers from early feature design through delivery, ensuring quality is built into the system from the start. The position requires strong automation of ownership, deep understanding of backend and integration testing, and the ability to reason complex flows, edge cases, and failure scenarios.

Key Responsibilities

Design, develop, and maintain automation tests for REST services, covering both integration and end-to-end (E2E) scenarios
Build and evolve scalable automation frameworks using Java and TestNG
Develop integration tests in close collaboration with developers
Validate complex system behavior involving:
REST APIs
Message queues (e.g. RabbitMQ)
Database state transitions
Perform API testing using RestAssured, including positive, negative, and edge case scenarios
Use WireMock or similar tools to mock external dependencies where isolation is required
Validate data consistency and system behavior via direct database queries
Integrate automation tests into CI/CD pipelines (Azure DevOps) and ensure stable execution
Analyze test failures and distinguish between:
Product defects
Test issues
Environment or infrastructure problems
Participate actively in code reviews, ensuring test quality, readability, and maintainability
Maintain clear test documentation and contribute to improving testing standards and practices
Take ownership of test stability, reliability, and continuous improvement of the automation process

Requirements

3+ years of experience in QA Automation, with a strong focus on backend and integration testing
Strong Java programming skills and experience writing production quality test code
Hands on experience with TestNG (or similar frameworks)
Solid experience in REST API testing (request/response validation, error handling, edge cases)
Experience with RestAssured for API automation
Practical knowledge of integration testing concepts in distributed systems
Experience validating database state using SQL queries
Familiarity with message-based architectures and asynchronous flows
Experience working with CI/CD pipelines (Azure DevOps or similar)
Familiarity with build tools such as Gradle or Maven
Experience with Git and collaborative development workflows (PRs, reviews)
Strong understanding of software testing principles and Agile/Scrum methodologies
Excellent analytical skills and attention to detail
Ability to work independently and take ownership of quality