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About the Role

As a System Administrator, you will plan and operate cutting-edge defense platforms alongside site reliability engineers and network engineers. These platforms are crucial for protecting our hosting products and infrastructure, encompassing DDoS mitigation, 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.

Responsibilities

Administer and troubleshoot highly available and complex infrastructures, including participation in an on-call service rotation.
Further develop and optimize distributed DDoS defense platforms, as well as analysis and visualization mechanisms.
Monitor systems, analyze security attacks, and actively track current industry trends.
Evaluate and assess new technologies and products.
Develop and implement new functions, as well as plan and operate international setups.
Support company goals through efficient operating architecture, active lifecycle management, and lean processes in an agile DevOps environment.
Conceive, set up, and further develop CI/CD pipelines and supporting technical processes.

Requirements

Completed a degree in Computer Science or a comparable professional education.
Keen interest in security topics.
Strong networking knowledge.
Fluent English communication skills (German is a plus).
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 defense platforms.
Initial experience with technologies such as Docker, Kubernetes, ClickHouse, or the ELK Stack is beneficial.
Strong advocate for Open Source, especially Linux.

Skills

Linux administration
Nginx configuration
BGP deployment
Flowspec deployment
Anycast routing
Ansible
Puppet
Python
DDoS attack analysis
Docker
Kubernetes
ClickHouse
ELK Stack

Location

select locations

Work Type

Hybrid working model
Trust-based working hours

Experience Level

Several years of experience

Education Level

Degree in Computer Science or comparable professional education

Benefits

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

About the Company

IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB).
The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide.
With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools.
In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve.

Equal Opportunity

We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.