Senior Software Engineer - Software Test Developer

The Senior Software Engineer - Software Test Developer (f/m/d) is responsible for ensuring the quality, reliability, and robustness of software developed by engineering teams. This position reports to the Manager Software Engineering and is part of the R&D Software team located in Munich and will be an on-site role., * Apply strong C# software engineering skills with quality as a first-class outcome-contributing to design, implementation, refactoring, and code reviews, and validating behavior with effective unit and integration tests.

• Treat tests as real software : build and maintain production-grade test infrastructure (frameworks, utilities, libraries) using SOLID principles and clean architecture, with meaningful coverage and long-term maintainability.
• Collaborate closely with peers during implementation-participating in design/architecture discussions, improving testability and robustness, and driving pragmatic changes in product code and interfaces where needed.
• Leverage and evolve the automation framework by owning its architecture, extensibility, and performance, and by strengthening CI/CD quality gates (fast feedback, reliable signals, flaky-test reduction) using simulations, stubs, and mocks where appropriate.
• Bring a strong quality perspective to code and test reviews, identifying design risks and edge cases across correctness, reliability, maintainability, and observability, and raising the overall quality bar through clear, practical feedback.
• Engage deeply in technical problem solving while acting as a quality mentor , driving root cause analysis and defect prevention, and promoting engineering best practices such as TDD/BDD, effective test design, and continuous improvement of tooling and processes.

• Masters/Bachelor’s degree in Computer Science or Software Engineering with a minimum of 5 years of experience; ISTQB certification is an advantage.
• Strong C# development experience using Visual Studio and unit testing frameworks such as MSTest and/or NUnit; familiarity with GitHub Copilot is an advantage.
• Proven ability to create test plans and test cases, automate tests, and design automation frameworks for non-UI applications and services.
• Experience working in agile environments and using Azure DevOps to manage and track work.
• Hands-on experience with API and UI testing, and familiarity with tools such as SpecFlow, Postman, FIT, load-testing tools, TestComplete, Selenium, or similar.
• Solid understanding of FDD, TDD, and BDD principles, with experience building and maintaining CI/CD pipelines in Azure DevOps.
• Excellent communication skills, with the ability to influence technical decisions, collaborate effectively with development teams, and drive open issues to resolution.

It would be a plus if you also possess previous experience in:

• Experience in the field of laboratory automation/robotics and control theory.
• Familiarity with software development processes for a regulated environment (ISO13845 and ISO62304).

Germering, Bayern Full Time Posted by: Beckman Coulter - Diagnostics Posted: Monday, 1 June 2026

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