Senior Test Engineer - QA (UI & API)

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Senior Test Engineer - QA (UI & API)

Katowice, Slaskie, Poland

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Job Description

Expect more. Connect more. Be more at Diebold Nixdorf. Our teams automate, digitize, and transform the way more than 75 million people around the globe bank and shop in this hyper-connected, consumer-centric world. Join us in connecting people to commerce in this vital, rewarding role.

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)

• 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
• Cafeteria Program
• Over 8000 industry recognized trainings
• Various options of development
• Being part of a multicultural team
• Possibility to use foreign languages on a daily basis
• Teamworking and supportive atmosphere in our teams
• Life insurance,
• Private medical care,
• Sport card,
• 26 days of holiday regardless seniority,
• Employee referral programme.

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.

\\ To all recruitment agencies: Diebold Nixdorf does not accept agency resumes. Please do not forward resumes to our jobs alias, Diebold Nixdorf employees or any other organization location. Diebold Nixdorf is not responsible for any fees related to unsolicited resumes**

We are a global Company operating in multiple Locations and Entities. As we are keen to find the best solution for our candidates several legal entities might be applicable for a Job offer. A List of our operating entities can be found here - https://www.dieboldnixdorf.com/en-us/about-us/global-locations

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Job Info

• Job Identification18449
• Job CategoryTechnology Solutions
• Posting Date03/30/2026, 03:52 AM
• LocationsKatowice, Slaskie, Poland
• Job ScheduleFull time
• Job ShiftNo

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