Test Automation Engineer (C#)

We're looking for a Mid / Mid+ Automation Engineer to join the team building a checkout platform for merchants across Europe. Every release touches real money, so test automation isn't an add-on — it's how the team decides whether we ship.

• Shape how we test a .NET product that lives entirely in Azure — from unit tests through API, end-to-end and performance
• Write and maintain test suites in C# / .NET that run reliably in our Azure pipelines
• Look after our BDD layer (Cucumber + Groovy) — keep scenarios readable for product and reliable in CI
• Own performance and load testing in K6: realistic traffic models, regression runs, feedback to devs and architects
• Cover the typical failure modes of a payment system — timeouts, retries, idempotency, partial failures
• Support junior testers, raise the quality bar on test code, and lead grown-up conversations about risk — in payments a "low priority bug" can still mean lost revenue or a compliance problem

• Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more.
• Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones!
• Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development.
• Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions.

• Computer Science degree or equivalent experience and at least 3 years in QA automation with a production track record
• Hands-on with the .NET test ecosystem (xUnit / NUnit, SpecFlow or Reqnroll, Playwright or Selenium, RestSharp / WireMock.Net)
• Good C# 
• Experience with Cucumber and comfort with Groovy step definitions (or honest willingness to ramp up — we have an existing BDD suite)
• API testing (REST, async / event-driven) and performance testing with K6 (or strong JMeter / Gatling / Locust and willingness to move to K6)
• Azure as a daily environment: Azure DevOps or GitHub Actions, App Service / AKS / Functions, Application Insights as a real source of insight when things break
• CI/CD, Git, Docker, Agile + Jira / Azure Boards; English at a comfortable working level
• Fluency in Polish and very good communication in English
• Availability to work in a remote/hybrid mode. Remote workers, we invite to the office once every month

Nice to have:

• Prior exposure to payments / fintech (PCI-DSS, 3-D Secure, PSD2/SCA, tokenization)
• Security testing basics (OWASP Top 10, API Top 10)
• Chaos / resilience testing or contract testing (Pact)
• IaC (Bicep / Terraform)