thyssenkrupp AG | Germany | 45xxx Essen | Permanent position | Full time | Published since: 13.08.2026 on stepstone.de
Senior Penetration Tester (m/f/d)
thyssenkrupp is an internationally established industrial and technology group with more than 93,000 employees. In 48 countries, the company generated sales of around 33 billion in the 2024/2025 financial year. €. The business activities are bundled in five segments: Automotive Technology, Decarbon Technologies, Materials Services, Steel Europe and Marine Systems. With comprehensive technology know-how, strong engineering competence and high innovative strength, the Group develops solutions for the challenges of the future as a technology leader in many of its markets. Around 3,900 employees work in the fields of research and development worldwide. They focus on climate protection and energy transition, the digital transformation in industry and the mobility of the future. thyssenkrupp's patent portfolio currently comprises approximately 17,000 patents and utility models, thus underlining the Group's leading technology and innovation position. thyssenkrupp pursues ambitious climate protection goals and actively optimizes its own energy and climate efficiency. At the same time, the Group supports its customers and industrial partners in achieving their climate targets and thus makes them decisively active in the green transformation. As a listed company thyssenkrupp is listed in the MDAX. The thyssenkrupp shares are traded on the Frankfurt Stock Exchange (Turkey: TKA) and as American Depositary Receipts (Turkey: TKAMY) in the USA. Since 20 October 2025, TKMS (Segment Marine Systems) has also been an independent, listed company, in which thyssenkrupp AG holds a majority stake of 51 percent; the TKMS shares are traded on the Frankfurt Stock Exchange (Turkey: TKMS) and from 22. December 2025 in the MDAX. .
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Your tasks • Your profile • What we offer
As Senior Penetration Tester (m/w/d) you are responsible for the identification and investigation of security guards at thyssenkrupp You interact with internal customers to determine their requirements for the tests In addition, use appropriate methods, scripts and tests to continuously improve the efficiency and effectiveness of penetration testing tools The support of vulnerability management and other security-relevant projects is one of your tasks You create reports and solution recommendations to prevent successful attacks
You have a degree in computer science or a comparable qualification as well as several years of professional experience in the field of penetration testing of web applications/infrastructures In addition, experience in Red Teaming and Source Code Analysis as well as sound knowledge of the OWASP Testing Guide (e.g. XSS, CSRF, Session Hijacking) You have already worked with the relevant security tools such as Wireshark, Bettercap, Nessus, Burp Suite, Metasploit and have scripting skills (e.g. Python, Bash, Ruby) You have the ability to think critically in order to identify, collect, summarize and evaluate large amounts of data and to draw logical and implementable conclusions Knowledge of the safety assessment and testing of AI-based applications as well as practical experience in handling AI-based tools are advantageous Furthermore, you are characterized by a pronounced problem-solving competence Very good knowledge of German and English language in word and writing complete your profile
For us it is self-evident to offer you optimal framework conditions. These include: A dynamic, international working environment with attractive working conditions and social benefits Flexible working hours, an optimal balance between professional and private life and a variety of health promotion programmes Numerous individual, professional and personal development opportunities and global career opportunities Collaborative cooperation and respect in dealing with each other – you can find it with us for more than 200 years. If this is as important to you as us, apply now!
We value diversity
We value diversity and therefore welcome all applications – regardless of gender, nationality, ethnic and social origin, religion/worldview, disability, age as well as sexual orientation and identity. .
Location
 | thyssenkrupp AG | |
| 45143 Essen | ||
| Germany |
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