Firewall Administrator – Sophos XGS

RENAFAN GmbH

Firewall Administrator managing Sophos XGS firewall infrastructure for a nursing service provider in Berlin. Responsibilities include configuration, monitoring, and maintenance of network security systems.

Posted 7/7/2026full-timeBerlin • 🇩🇪 GermanyMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in firewall administration, particularly with Sophos XGS/SFOS, and possesses solid networking knowledge including TCP/IP, routing, and VPN technologies. Proficient in security incident response and maintaining high-availability firewall systems.

Highest-signal resume keywords

Firewall AdministrationSophos XGS/SFOS ExperienceNetworking Knowledge (TCP/IP, Routing, VLANs)Sophos CertificationsGerman Language Skills (C1)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Firewall Rule Sets DesignNAT ConfigurationVPN Technologies (IPsec, SSL-VPN/ZTNA)IPS ConfigurationTLS InspectionSandboxingLog AnalysisNetwork Documentation

Soft Skills

Security-Conscious Working StyleHigh Reliability

Tools & Technologies

Sophos CentralSynchronized SecuritySIEM Integration

Certifications & Qualifications

Sophos Certified EngineerSophos Certified Architect

Industry Keywords

IT Security StandardsNetwork Segmentation Concepts

Tech Stack

Tools & technologies

DNSFirewallsTCP/IP

About the role

Key responsibilities & impact

Administration, operation and further development of our Sophos XGS firewall infrastructure across multiple sites
Design, implementation and maintenance of firewall rule sets, NAT, web filtering and application control policies
Operation and expansion of site-to-site and remote-access VPNs (IPsec, SSL-VPN/ZTNA)
Configuration and optimization of IPS, TLS inspection, sandboxing (zero-day protection) and Synchronized Security
Monitoring, log analysis and reporting (Sophos Central, syslog/SIEM integration)
Analysis and resolution of network and security incidents, and participation in security incident response
Patch and lifecycle management of firewall systems, including high-availability (HA) operation
Creation and maintenance of network and firewall documentation

Requirements

What you’ll need

Completed IT vocational training, degree or comparable practical experience
Several years of experience in firewall administration, ideally with Sophos XGS/SFOS
Solid networking knowledge (TCP/IP, routing, VLANs, DNS, VPN technologies)
Experience with Sophos Central and, preferably, Synchronized Security / Intercept X
Knowledge of IT security standards and network segmentation concepts is an advantage
Sophos certifications (e.g., Sophos Certified Engineer/Architect) desirable
A careful, security-conscious working style and high reliability
Very good German skills (at least C1) and good English skills, both spoken and written

Benefits

Comp & perks

A secure position with a multiple award-winning company
Flat hierarchies with short decision-making processes
A friendly team with a professional working atmosphere
Excellent public transport connections (U6 Borsigwerke, S25 Tegel)
Employer contributions to company pension plan and capital-forming payments
Corporate health management (e.g., on-site massages)
Corporate benefits with more than 1,000 partners
Trial day to get to know each other