QA Engineer

6 days ago

Budapest, Budapest, Hungary greehill Full time 900,000 - 1,200,000 per year

About the Role

We're looking for a
QA Engineer
with a strong focus on
manual testing of complex backend systems
, who also has the skills and curiosity to
build and evolve test frameworks
. You'll play a critical role in ensuring our systems are reliable, testable, and production-ready.

You'll work closely with developers, product managers, and data engineers to understand how our systems work – then help break them in the right ways. While manual testing will be your day-to-day focus, you'll also lay the foundation for automated tests (e.g.,
pytest
,
end-to-end pipelines
,
approval tests
) to reduce regression risk and support future scalability.

Responsibilities

  • Design and execute
    manual test cases
    for backend APIs, services, and data pipelines.
  • Build and maintain a
    Python-based test framework
    (e.g., pytest, approval tests) for system-level and end-to-end validation.
  • Collaborate closely with developers to understand architecture, identify risks, and develop effective test strategies.
  • Own the
    quality gates
    in our development and release process.
  • Participate in planning and refinement sessions to proactively catch unclear requirements or edge cases.
  • Investigate and report bugs with clarity and precision.
  • Drive the adoption of
    lightweight automation
    where it adds long-term value.
  • Help define and refine
    QA best practices
    tailored to a fast-paced backend/data environment.

Requirements

  • 3+ years of experience in
    manual testing of backend systems
    , APIs, or distributed architectures.
  • Solid Python skills, ideally with experience using
    pytest
    or similar testing libraries.
  • Comfortable reading logs, querying databases, and working with REST/GraphQL APIs.
  • Experience with
    approval testing
    ,
    end-to-end test orchestration
    , or data integrity checks is a plus.
  • Clear communication skills – both in writing test cases and in reporting bugs.
  • Familiarity with CI/CD tools and version control (e.g., Git, GitHub Actions, Azure DevOps) is a bonus.
  • Passion for clean, testable systems – and a pragmatic approach to when and how to automate.

Nice to Have

  • Experience with mocking/stubbing tools, contract testing, or test containers.
  • Exposure to infrastructure or Kubernetes-based environments.
  • Previous experience introducing or improving test frameworks from scratch.

What We Offer:

  • An exciting and diverse role in an
    innovative and future-oriented company
    .
  • The opportunity to manage and shape your own projects.
  • Flat hierarchies
    , a dynamic team, and an open company culture.
  • Opportunities for professional growth and development.

Please note, our office attendance is high, with employees
working on-site four days a week.

We appreciate the interest of all job seekers in our organization. However, please note that at this time, we are unable to consider applications from outside of Hungary, who require a work permit for this position. We thank you for your understanding and encourage you to explore other opportunities with greehill in the future.

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