System Administrator (f/m/d) - Defense Products / 1567

IONOS SE; Karlsruhe; Vor Ort; EUR 70.000 - 90.000; Vollzeit

Benefits dieser Stelle

Subsidized canteen

Free drinks

Public transport access

Employee events

Training & development

Wellness offerings

Zusammenfassung

IONOS SE in Karlsruhe is seeking a System Administrator (f/m/d) to join our defense products team. You will plan and operate cutting-edge platforms with SRE and network engineers, covering DDoS defense, WAF, Zero Trust, and our CDN, while contributing to agile DevOps workflows.

You will implement and optimize CI/CD pipelines, monitor systems, respond to incidents, analyze security trends, and evaluate new technologies to strengthen our hosting infrastructure.

Qualifikationen

• Several years of experience administering distributed Linux systems.
• Proficient in configuring Nginx as reverse proxy or web application firewall.
• Hands-on experience with Docker, Kubernetes or related tooling.
• Strong scripting and automation skills (Python, Ansible, Puppet).
• Fluent English; German language skills are a plus.

Aufgaben

• Administration and troubleshooting of highly available infrastructures, including on-call rotation.
• Development and optimization of distributed DDoS defense platforms and visualization mechanisms.
• Monitoring systems, analyzing security incidents, and tracking industry trends.
• Evaluation and assessment of new technologies and products.
• Development and implementation of new functions and international deployments.
• Support company goals through efficient operating architecture and lean DevOps processes.
• Conception and development of CI/CD pipelines and supporting processes.

Kenntnisse

Linux administration

Networking

Automation (Ansible Puppet)

Python scripting

Docker / Kubernetes basics

English communication

Ausbildung

Degree in Computer Science or related field

Tools

Nginx reverse proxy / WAF

BGP / Flowspec / Anycast routing

CI/CD pipelines

ELK / ClickHouse

Jobbeschreibung

System Administrator (f/m/d) - Defense Products / 1567

System Administrator (f/m/d) - Defense Products / 1567

System Administrator (f/m/d) - Defense Products / 1567

Join our highly motivated team of experts dedicated to combating cybersecurity threats. As a System Administrator, you will plan and operate our cutting-edge defense platforms alongside site reliability engineers and network engineers. These platforms are crucial for protecting our hosting products and infrastructure, encompassing classic DDoS mitigation, modern Web Application Firewalls (WAF), Zero Trust strategies, and our Content Delivery Network (CDN). We foster a culture that highly values creative ideas, agile working methods, initiative, and participation.

Tasks

• Administration and troubleshooting of highly available and complex infrastructures, including participation in an on-call service rotation.
• Further development and optimization of distributed DDoS defense platforms, as well as analysis and visualization mechanisms.
• Monitoring of systems, analysis of security attacks, and active tracking of current industry trends.
• Evaluation and assessment of new technologies and products.
• Development and implementation of new functions, as well as planning and operating international setups.
• Supporting company goals through efficient operating architecture, active lifecycle management, and lean processes in an agile DevOps environment.
• Conception, setup, and further development of CI/CD pipelines and supporting technical processes.

Qualifications

You have completed a degree in Computer Science or a comparable professional education. Additionally, you have a keen interest in security topics, strong networking knowledge, fluent English communication skills (German is a plus), and the following qualifications:

• Several years of experience in the administration of complex, distributed Linux systems.
• Proven experience in configuring and operating Nginx as a reverse proxy or web application firewall.
• Hands-on experience with the deployment of BGP, Flowspec, and Anycast routing on Linux systems and network routers.
• Strong passion for automation using tools like Ansible and Puppet and Python to eliminate repetitive manual tasks.
• Strong analytical skills to evaluate DDoS attacks, implement effective countermeasures, and continuously develop our defense platforms.
• Initial experience with technologies such as Docker, Kubernetes, ClickHouse, or the ELK Stack is beneficial.
• Like us, you are a strong advocate for Open Source, especially Linux.
• 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.