Senior Test Engineer - QA (UI & API)

Diebold Nixdorf, Incorporated; Katowice; Hybrid; PLN 111,000 - 133,000; Full time

Benefits offered by this job

Private Medical Care

Cafeteria Program

Multisport Card

Life Insurance

Hybrid Work Model

26 Days Annual Leave

Learning & Development

Job summary

Diebold Nixdorf, Incorporated is seeking an experienced performance automation engineer in Katowice. You will shape performance strategies, build scalable automation, and work across UI and API layers to ensure fast, resilient software at scale.

You’ll collaborate with developers, integrate testing into CI/CD, and help teams improve through data-driven insights. The role supports a hybrid model with on-site presence in Katowice.

Qualifications

• 3+ years of software engineering or test automation experience.
• Strong C# coding skills.
• Design performance strategies and analysis of bottlenecks.
• Develop automation frameworks and test scripts.

Responsibilities

• Drive performance quality: Design and execute performance strategies covering UI and API layers.
• Build scalable automation: Create 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 into CI/CD pipelines.
• Enable great environments: Shape test data strategies and ensure systems are observable and scalable.
• Elevate quality standards: Track KPIs and continuously improve engineering practices.
• Coach and collaborate: Review code and share best practices across teams.
• Own problems end-to-end: Triage issues and implement long-term fixes.
• Keep knowledge flowing: Maintain clear, living documentation and playbooks.
• Innovate with AI: Explore AI-driven test generation and anomaly detection.

Skills

C# development

Automation mindset

Performance testing

UI automation

CI/CD tooling

Windows & Linux

Agile delivery

Troubleshooting

Tools

JMeter

Playwright

Selenium

Selenoid

Docker

Jenkins

Git

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).

• 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

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)
• Working across Windows & Linux environments
• 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:

• Contract of Employment
• Private Medical Care
• Cafeteria Program
• Multisport Card
• Life Insurance
• Hybrid Work Model (if applicable)
• 26 Days Annual Leave Regardless of Seniority
• Learning & Development (8,000+ Trainings)
• Career Growth Opportunities
• International & Multicultural Environment
• Foreign Language Use
• Employee Assistance Program
• Employee Referral Program
• Supportive & Inclusive Culture

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.

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