Senior Software Test Engineer

JD-4: Senior Software Test Engineer (m/f/d)

Location:

Level:

Role Overview

Senior Software Test Engineer

Key Responsibilities

• Define and execute comprehensive test strategies (functional, integration, regression, system) for desktop, web, and embedded automation components.
• Design detailed test cases, test data sets, and regression suites for Windows applications, HTML5 web dashboards, and REST APIs.
• Develop and maintain automated test frameworks (UI/API/integration) using industry-standard tools integrated into Azure DevOps CI/CD.
• Execute end-to-end scenarios simulating real manufacturing and energy plant operations, including industrial protocol communication and real-time data validation.
• Analyze defects, reproduce customer-reported issues, document findings, and verify fixes in collaboration with developers.
• Improve testing processes and standards; mentor junior testers in mission-critical QA practices.
  

Required Qualifications

• 7+ years software testing/QA experience in industrial automation, SCADA, or mission-critical technical products.
• Expert-level knowledge of test design techniques, complete software testing lifecycle, and risk-based testing methodologies.
• Advanced hands-on experience with UI and API automation (Selenium, Playwright, or equivalent) with scripting in C#, Python, or Java.
• Proficiency with Git version control and CI/CD environments (Azure DevOps, Jenkins, or similar).
• Analytical mindset with excellent documentation, attention to detail, and strong communication skills.
• Proficient German and English (spoken and written).
  

Preferred Skills

• Experience testing PLC/soft-PLC logic, drive systems, OPC UA, or HMI/SCADA applications.
• Knowledge of industrial communication protocols, real-time systems, hardware-in-the-loop, or field simulation testing.
• ISTQB certification or equivalent QA qualification.
• Performance, load, and security testing experience in 24/7 industrial environments.