Senior Quality Assurance Engineer

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

Hey there, think you stumbled upon this job posting by chance?

We don't believe in chance at Nimber.

Caught your eye? Great. Keep going...

We are Nimber, and we are not just filling positions, we are building a team that is ready to shake things up. If you are ready to rewrite the rules and make a real impact, this is your moment. Join us and let's put the future where it belongs. In the hands of passionate people.

But what does Nimber mean?

In mathematics and game theory, they are numbers with special properties of addition and multiplication. And what we really want is to add value to customers' projects.

Location:

Porto or Lisbon, Portugal

Work model:

Hybrid - 2 days per week in the office.

Join the IT Payments Team (Paris and Porto/Lisbon), working on high-performance Java backend systems and batch processing.

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.

Requirements

• 6+ years in QA, focused on backend testing and test automation;
• Java 17/21 and Spring Boot (able to read code and debug logs);
• Test automation with REST Assured, JUnit, TestNG, Cucumber;
• SQL (Oracle or PostgreSQL);
• Xray or Zephyr;
• Jenkins, GitLab CI or similar;
• Kafka, RabbitMQ or Spring Batch testing (highly valued);
• Degree in Technology, Computer Engineering or similar (equivalent experience considered);
• Analytical, detail-oriented, proactive team player with good communication skills in a multicultural environment;
• Fluency in English;
• French is a plus.

Ready to join us and succeed?