Who we are:

With several hundred thousand servers in operation, Hetzner is one of the largest web hosting providers and data center operators in Europe. We provide our customers with high-tech products we develop in house, and with reliable infrastructure at fair prices. More than 500 Hetzner employees work every day to help shape the digital future and provide our customers with simple, efficient solutions to complex problems.

At Hetzner Online, we don't just operate data centers and provide hosting solutions — we build and secure the digital infrastructure that powers businesses around the world. To strengthen our internal IT security, we’re looking for a skilled and motivated Pentester (m/f/d).

Join us in identifying vulnerabilities before they become threats — and help shape security for tomorrow.

Your responsibilities:

Perform penetration tests and source code analyses on internal systems
Develop realistic attack scenarios to uncover potential weaknesses
Document your findings in a clear and actionable format
Evaluate and analyze cyber security architectures using established standards and best practices
Help raise our security standards by proposing and implementing improvements

What impresses us:

A successfully completed degree in computer science or a comparable qualification
Hands-on experience testing web-based applications
Strong IT knowledge or a deep interest in the world of IT security
Solid understanding of common vulnerabilities and exploit techniques
Familiarity with standard security tools (e.g. Burp Suite, Metasploit, Nmap, etc.)
Excellent communication skills in both German and English
A confident, proactive mindset with strong teamwork and communication skills

The work environment at Hetzner:

At Hetzner Online, your tasks will be exciting, challenging, and varied. Our corporate philosophy emphasizes personal interaction, efficient decision making processes, and a strong DIY mentality. In addition to numerous social benefits, flexible working hours (where feasible), and opportunities for both professional and personal development, we can offer you an attractive salary.