Senior Backend QA Engineer - Test Automation & CI/CD

Nimber; Porto; Hybrid; EUR 45,000 - 65,000; Full time

Job summary

Nimber is hiring a QA professional to join the IT Payments Team (Paris and Porto/Lisbon). You will help design and execute test strategies for high-performance Java backend systems and batch processing.

With 6+ years in backend QA, you will implement automation using REST Assured, JUnit, TestNG and Cucumber, validate data via SQL, and integrate tests into CI/CD. The role is hybrid with two days in the office in Portugal.

Qualifications

• 6+ years in QA with backend testing and test automation.
• Experience with Java backends and Spring Boot.
• Strong REST API testing and SQL data validation.
• Familiarity with CI/CD and test management tools.

Responsibilities

• Design, build and maintain test automation frameworks for Java backends, microservices and APIs.
• Perform manual testing when needed, defining test strategies and cases for complex backend logic and batch processing.
• Turn payments business rules into automated, executable test scenarios, working with POs, Tech Leads and Developers.
• Validate data integrity and backend transactional behavior with SQL.
• Promote a Quality First and Shift-Left culture in the Agile team.
• Troubleshoot and document defects, with log and root-cause analysis.
• Integrate test suites into CI/CD pipelines as quality gates.

Skills

QA experience

Java

Spring Boot

Test automation

REST Assured

JUnit

TestNG

Cucumber

SQL

Kafka

RabbitMQ

Spring Batch

Jenkins

GitLab CI

English fluency

French helpful

Education

Degree in Technology

Equivalent experience

Tools

Xray

Zephyr

Jenkins

GitLab CI

Job description

Nimber is hiring a QA professional to join the IT Payments Team (Paris and Porto/Lisbon). You will help design and execute test strategies for high-performance Java backend systems and batch processing.

With 6+ years in backend QA, you will implement automation using REST Assured, JUnit, TestNG and Cucumber, validate data via SQL, and integrate tests into CI/CD. The role is hybrid with two days in the office in Portugal.