Sr. Test Automation Engineer - Python (f/m/d) at an established IT-Security Company (Testingenieur/in)

Germany | Aug. 13, 2026

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Company: Zertificon Solutions GmbH

Country: Germany

Type: Onsite

Employment: Contract

Description: Zertificon Solutions – Software Manufacturer since 2004.
We are IT security specialists: our products encrypt business communications. More than 25% of the 100 highest-revenue companies in Germany, as well as hundreds of medium-sized enterprises across all industries, already use our Z1 encryption solutions. We have big plans and continue to grow steadily. Nearly 130 employees are already working with us in Neukölln. Join our professional, highly qualified team: take on challenges, share your knowledge, learn new things, and discover your potential!

Sr. Python Test Automation Engineer (f/m/d) at an established IT-Security Company

Join us as a Senior Test Automation Engineer and be the driving force behind a flawless software. Rapidly develop cutting-edge automation tests to elevate our test coverage, ensuring no regression slips through with every new feature release. Measure and enhance our software's performance regularly, and be the guardian of quality and excellence our customers deserve. Your expertise will be crucial in delivering robust, reliable solutions.

Responsibilities

- Design, develop, and execute cutting-edge automated software tests, complete with error analysis, assessments, and detailed documentation
- Ensure comprehensive test coverage by testing existing features incrementally and new features in parallel with implementation
- Step in with precise manual tests when automated testing isn't enough
- Collaborate closely with developers and fellow test engineers to devise and implement effective testing strategies
- Identify, report, and track defects, working hand-in-hand with development teams for swift resolution
- Generate clear and insightful test reports, metrics, and documentation to keep stakeholders informed and up-to-date
- Stay ahead of the curve with the latest trends, tools, and technologies in test automation and quality assurance

Qualifications

- Proven experience (min 5 years) as a Software Test Engineer in an agile software development environment
- Excellent skills in ISTQB test specification methods and management, ideally certified
- Strong experience in test automation methods with advanced techniques
- Knowledge of Selenium, Cucumber, and Playwright testing frameworks
- First hands-on experience working with Docker for containerization
- Proficiency in Python, Linux and shell scripting
- You have an open and clear communication style and excellent English skills

Nice to have

- Hands-on experience with test documentation tools like TestRail
- Good German language skills

Our offer

- Flexible hours and home office options
- Mobility: free Germany-wide public transport ticket, bike leasing, or parking
- Subsidies for meals: (e.g., delivery services) and home office internet
- Urban Sports Club membership for flexible fitness and wellness
- Office perks: rooftop terraces & green courtyard, organic fruit and drinks, personal packages accepted at the office
- Get-togethers: monthly Pizza Friday, regular team events, big summer party
- Responsible leadership: structured onboarding, regular feedback, clear goals
- Innovative without startup risk: profitable for 20+ years, self-funded innovation with strong global potential
- International team: 120+ colleagues from 30+ countries, open and collaborative culture

If that resonates with you, we’d love to hear from you.

Want to know more? Please have a look at our Work at Zertificon page: https://www.zertificon.com/en/it-jobs-berlin/work-at-zertificon (https://www.zertificon.com/en/it-jobs-berlin/work-at-zertificon)

Questions?

You can reach our HR team at

jobs@zertificon.com (https://mailto:jobs@zertificon.com)

Homeoffice:
Umfang: Nach Vereinbarung

Apply here:

Web: Apply here

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