System Administrator (f/m/d) Defense Products

IONOS; Berlin; Vor Ort; EUR 70.000 - 100.000; Vollzeit

Benefits dieser Stelle

Subsidized canteen

Free drinks

Modern office

Excellent public transport connections

Employee discounts

Employee events (summer/winter parties

Training & development opportunities

Health offerings

Zusammenfassung

IONOS in Berlin is seeking a System Administrator to plan and operate defense platforms alongside SRE and network engineers. You'll work on DDoS mitigation, WAF, Zero Trust, and CDN, contributing to secure hosting products and infrastructure.

The role emphasizes automation, CI/CD, and open source advocacy, with on-call rotations and international setups. Fluent English is required; German welcome. Flexible hours and modern offices with strong transport links are offered.

Qualifikationen

• Several years of experience administering complex distributed Linux systems.
• Experience configuring Nginx as reverse proxy or web application firewall.
• Hands-on deployment of BGP, Flowspec, and Anycast routing.
• Strong automation skills with Ansible, Puppet, and Python.
• Interest in security topics and Open Source advocacy.

Aufgaben

• Administration and troubleshooting of highly available infrastructures, including on-call rotation.
• Development and optimization of distributed DDoS defense platforms.
• Monitoring, security attack analysis, and industry trend tracking.
• Evaluation of new technologies and products.
• Development and implementation of new functions; planning international setups.
• Support goals with efficient operating architecture in a DevOps environment.
• Conception and deployment of CI/CD pipelines and related processes.

Kenntnisse

Linux system administration

Nginx reverse proxy / WAF

BGP/Flowspec/Anycast routing

Automation with Ansible/Puppet/Python

DDoS defense analysis

Docker

Kubernetes

ELK Stack

Ausbildung

Degree in Computer Science or comparable education

Tools

ClickHouse

ELK Stack

Git

CI/CD tooling

Jobbeschreibung

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, 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.