Linux System Administrator - DDoS Defense / Nginx (m/w/d)

Linux System Administrator - DDoS Defense / Nginx (m/w/d) in Vollzeit gesucht für den Einsatzort 76137 Karlsruhe

Über das UnternehmenWir sind Europas führende Plattform für Cloud Services und Hosting-Dienstleistungen. Wir begleiten erfolgreich unsere Kundinnen bei ihrer Unternehmensentwicklung. Für unseren Unternehmenserfolg sind über 4000 Mitarbeitende in mehreren Ländern weltweit tätig, um die Anforderungen und Wünsche unserer 8,5 Millionen Kundinnen zu erfüllen. Wir sind eine Marke der United Internet AG, einem börsennotierten Unternehmen mit rund 10.200 Mitarbeitenden. Wir fördern die Entwicklung unserer Mitarbeitenden und deren unterschiedliche Talente, Interessen und Sprachen. Was bieten wir dir? Hybrid working model. Flexible working hours through trust-based working hours. Subsidized canteen and various free drinks at

Was bieten wir dir?

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• Subsidized canteen and various free drinks at select locations.
• Modern office space with excellent public transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offerings, such as sports and wellness courses.

What can you expect?

• You administer and troubleshoot our highly available, distributed Linux infrastructures and actively participate in the on-call rotation.
• You develop and optimize our DDoS defense platforms by configuring Nginx as a WAF and deploying countermeasures using BGP Flowspec.
• You consistently drive the automation of our infrastructure using tools like Ansible and Python to make our processes leaner and more reliable.
• You monitor system performance, analyze complex security attacks, and enhance our visualization tools, potentially with the ELK Stack or ClickHouse.
• You evaluate, test, and implement new technologies and products, exploring areas like containerization with Docker and Kubernetes to keep our stack cutting-edge.

What should you bring along?

• You have several years of experience in the administration of complex distributed Linux systems
• You have proven experience in configuring and operating Nginx as a reverse proxy or web application firewall
• You possess hands-on experience with the deployment of BGP Flowspec and Anycast routing on Linux systems and network routers
• You have a strong passion for automation using tools like Ansible, Puppet, and Python to eliminate repetitive manual tasks
• You have strong analytical skills to evaluate DDoS attacks, implement effective countermeasures, and continuously develop our defense platforms
• You have initial experience with technologies such as Docker, Kubernetes, ClickHouse, or the ELK Stack, which is beneficial