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Quality Assurance Engineer (m/f/d)

AI Summary
ecosio is seeking a Quality Assurance Engineer to improve and maintain backend test infrastructure within a product team. The role combines automated and manual testing, API validation, regression testing, release monitoring, and defect lifecycle management. The engineer will work primarily with Java, JUnit 5, Spring, Kubernetes, GitLab, Maven, and Docker, including performance and chaos-testing activities. Close collaboration with developers is required to improve testability, implement test scenarios, and maintain reliable CI/CD quality controls.
Remote from
UK, Spain, Germany+5 more, Italy, Portugal, Hungary, Croatia, Austria
Salary
Undisclosed
Department
QA & Testing
Employment
Full Time
Experience
Open level
Published
Apply before
7 Dec 2026
Listing views
32
Application actions
1
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Opportunity details

About this role.

ecosio is a fast-growing, innovative service company and a leading provider of B2B integration, specialising in electronic data interchange (EDI), Web EDI and e-invoicing. ecosio is part of Vertex, Inc., a leading global provider of indirect tax solutions listed on Nasdaq (VERX).

Our brand slogan is Connections That Work as we believe strong connections are central to successful business relationships – both external and internal. At ecosio, we hire individuals from all backgrounds and are committed to creating an inclusive work environment. We are technology lovers, set the highest standards for our solutions, and put innovative ideas first.

Job Description

You’ll connect with the role if you enjoy…

  • being responsible for continuously evolving and improving our test infrastructure
  • working directly in the product team
  • developing and maintaining our quality assurance infrastructure for back end (JUnit 5, Spring, Kubernetes)
  • taking part in chaos testing and performance testing
  • actively collaborating with the developers to build requirements from a testability perspective
  • identifying defects, reporting them to the development team and accompanying them to prepare production deployments
  • taking over and monitoring software releases and regression testing during development
  • developing and executing requirements for test cases, test scripts and test scenarios and implementing these together with the team
  • monitoring test suites and coordinating actions to update tests and fix regressions
  • supporting the team with CI / CD (GitLab, Maven, Docker)

Qualifications

To connect with ecosio it is important to have…

  • profound Java knowledge
  • professional experience in the Quality Assurance field
  • a solid knowledge of automated and manual testing using JUnit 5
  • API testing framework experience
  • a good command of written and spoken technical English

And nice to have…

  • a running or completed IT education (HTL, FH or university)
  • experience with Kubernetes or GitLab

Additional information

By connecting with us you will experience…

  • flexible remote working
  • open corporate culture
  • personal and professional development
  • employee events and trips
  • passionate team that will win your heart

Sounds like a connection that works? Then apply now and we will get in touch soon!

As part of our hiring process at ecosio, we conduct standard background checks. You can find more information about them by clicking HERE.

Our mission is to build Connections That Work by fostering a diverse and inclusive team. We are committed to making everyone feel valued and empowered to contribute their unique skills, experiences and perspectives. And now we want to connect with you.

Apply now >

This job listing has been manually reviewed by the Jobicy Trust & Safety Team for compliance with our posting guidelines, including verification of the company's legitimacy, accuracy of job details, clarity of remote work policy, and absence of misleading or fraudulent content.

Role DNA

A quick view of the complexity, pace, ownership and collaboration implied by the job description.

Job Complexity

4/5
EasyHard

Pace & Pressure

4/5
RelaxedFast-paced

Autonomy Level

4/5
GuidedFull ownership

Communication Load

4/5
IndependentCollaborative
AI insightThis is a technically demanding QA role because it requires strong Java-based test automation and infrastructure knowledge alongside performance, chaos, API, and release testing. The engineer must independently identify quality risks while coordinating closely with developers and product stakeholders.

Salary analysis

Estimated compensation compared with the broader US market for similar roles.

Estimated job median (per year)Highly competitive
$105,000
US market range (per year)$85k–$125k
AI insightThe yearly pay period is inferred from the job context; it was not explicitly stated by the employer. No employer salary was disclosed. The annual compensation estimate is inferred for an experienced QA automation engineer with Java, backend testing, CI/CD, and Kubernetes exposure in the US market.

Core skills

Skills and capabilities most closely associated with this opportunity.

Sample interview questions
How have you designed and maintained automated tests in a Java-based backend environment?

I structure tests around clear business behavior and stable API or service contracts, using JUnit 5 for execution and reusable helpers for setup, assertions, and test data. I keep tests deterministic, run them in CI, and regularly remove duplication or brittle dependencies.

What is your approach to investigating a regression found during a release cycle?

I first reproduce the issue and collect concise evidence such as logs, request payloads, environment details, and expected versus actual results. I then assess impact, create a clear defect report, work with developers on root cause analysis, and add or improve automated coverage to prevent recurrence.

How would you assess whether a service is ready for performance or chaos testing?

I would confirm that key workflows, observability, baseline performance metrics, and test environments are in place. I would define measurable success criteria, identify realistic failure scenarios, execute tests incrementally, and use the findings to prioritize resilience improvements.

How do you incorporate testability into requirements refinement with developers?

I ask for observable acceptance criteria, clarify edge cases and error handling, and identify required test data and interfaces early. This helps the team agree on how behavior will be validated before implementation begins.

What practices help keep a CI test suite useful rather than slow or unreliable?

I separate fast feedback tests from longer integration and end-to-end suites, quarantine and fix flaky tests promptly, and make failures easy to diagnose through meaningful reporting. I also monitor execution time and coverage trends so the suite remains dependable as the product evolves.

This analysis is generated from the job description. Salary estimates, role characteristics and sample answers are guidance, not employer-provided facts.
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