Senior Test Engineer - QA (UI & API)

Diebold Inc.; Katowice; Hybrid; PLN 111,000 - 133,000; Full time

Benefits offered by this job

Cafeteria Program

Sportcard

Employee referral programme

Job summary

Diebold Nixdorf is seeking an impact-driven software performance engineer who thrives on optimization, automation, and scalable testing. You will design performance strategies, create automation, and collaborate with developers to ensure fast, resilient applications at scale.

You will work in a hybrid setup (minimum 3 days in Katowice) and contribute across UI and API layers, building tools to empower engineering teams and improve system observability, quality, and reliability.

Qualifications

• Experience (3+ years) in software engineering or test automation.
• Solid automation mindset and ability to design solutions.
• Strong knowledge of performance testing across UI and API layers.

Responsibilities

• Drive performance quality by designing and executing performance strategies for UI and API layers.
• Build scalable, reusable test frameworks and scripts simulating real-world usage.
• Analyze performance metrics, identify bottlenecks, and guide data-driven decisions.
• Embed performance testing into CI/CD pipelines as part of the engineering flow.
• Shape test data strategies and ensure systems are observable and scalable.
• Track KPIs like critical path coverage and defect escape; improve practices.
• Review code, share best practices, and help teams build high-quality systems.
• Triage issues, perform root-cause analysis, and implement long-term fixes.
• Maintain clear, living documentation and playbooks.

Skills

C#

Performance testing

UI automation

CI/CD tooling

Playwright

Selenium

Selenoid

Docker

Jenkins

Git

Jira/XRay

Tools

Docker

Jenkins

Git

Playwright

Selenium

Selenoid

Jira/XRay

Job description

Expect more. Connect more. Be more at Diebold Nixdorf. Our teams automate, digitize, and transform the way more than 75 million peoplearound the globebank and shop in thishyper-connected, consumer-centric world. Join us inconnecting people to commerce in this vital, rewardingrole.

Position Overview:

We’re looking for a curious, impact-driven engineer who is passionate about performance, scalability, and engineering quality.

In this role, you won’t just “test” systems—you’ll shape how they perform in the real world. You’ll design intelligent performance strategies, build automation, and partner closely with developers to ensure our applications are fast, resilient, and delightful to use at any scale.

If you enjoy digging into bottlenecks, working across UI and APIs, and building tools that make engineering teams stronger, this role is for you.

Location:Hybrid model is possible (minimum 3 days in Katowice office per week).

Responsibilities

• Drive performance quality
  Design and execute performance strategies covering UI and API layers (load, stress, and beyond)
• Build smart automation
  Create scalable, reusable test frameworks and scripts that simulate real-world usage
• Turn data into insight
  Analyze performance metrics, identify bottlenecks, and help teams make data-driven decisions
• Be part of the engineering flow
  Embed performance testing seamlessly into CI/CD pipelines
• Enable great environments
  Shape test data strategies and ensure systems are observable, stable, and ready to scale
• Elevate quality standards
  Track meaningful KPIs (e.g., critical path coverage, defect escape) and continuously improve engineering practices
• Coach and collaborate
  Review code, share best practices, and help teams build testable, high-quality systems
• Own problems end-to-end
  Triage issues, perform root cause analysis, and implement long-term solutions—not just fixes
• Keep knowledge flowing
  Maintain clear, living documentation and playbooks

Innovate with AI
Explore and implement AI-driven approaches for test generation, anomaly detection, and smarter regression strategies

Qualifications

Must have:

Experience (3+ years) in software engineering or test automation, with a strong automation mindset

Solid coding skills in C# (or similar modern language)

A proactive approach—you enjoy designing solutions, not just executing tasks

• Performance testing tools (e.g., JMeter or similar)
• UI automation frameworks (e.g., Playwright, Selenium, Selenoid)
• CI/CD and engineering tools (Docker, Jenkins, Git, Jira/XRay)

Understand modern software testing and Agile delivery

Can clearly communicate ideas and document your work

Nice to have:

Experience with AI in testing (e.g., GitHub Copilot, MCP concepts)

Familiarity with Elastic Stack or messaging systems (RabbitMQ)

Exposure to hardware simulation or end-to-end system testing

We offer:

• Contractofemployment
• Cafeteria Program
• Variousoptionsofdevelopment
• Sportcard,
• Employeereferralprogramme.

Pay Transparency Statement
The monthly base salary range for this position starts from 10,900.00 PLN gross
Actual compensation will depend on factors such as qualifications, skills, competencies, geographic location, and relevant experience. Certain roles may include additional components beyond base salary, such as incentive opportunities or other forms of variable compensation. Details of any such components will be discussed during the interview process and will be governed by the applicable plan documents.

#LI-PM1 #LI-Hybrid

About Us

Why should you join Diebold Nixdorf?

Brightest minds + technology and innovation + business transformation The people of Diebold Nixdorf are 23,000+ teammates of diverse talents and expertise in more than 130 countries, harnessing future technologies to deliver personalized, secure consumer experiences that connect people to commerce. Our culture is fueled by our values of collaboration, decisiveness, urgency, willingness to change, and accountability.

–Diebold Nixdorf is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran status, or disability status.