Network Administrator (m/f/d)

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The SYNLAB Group is the leading provider of laboratory services in Europe. The company offers the full spectrum of innovative and reliable medical diagnostics for patients, physicians, hospitals, and the pharmaceutical industry. SYNLAB operates in over 30 countries across four continents and holds a leading position in most markets. More than 24,000 employees contribute to the Group's success every day.

We are looking for a hands‑on Senior Network Administrator to design, implement, and operate our enterprise network across multiple international sites. The ideal candidate brings deep expertise in next‑gen firewalls (Fortinet & Cisco Firepower), enterprise switching (Cisco & Juniper), and network automation. You will define network architectures, harden security, streamline operations via scripting, and support site installations with regular travel within Germany.

Key Responsibilities

• Define scalable, secure LAN/WAN/SD‑WAN architectures and standards for global sites
• Produce high‑quality HLD/LLD documentation, network diagrams, IP schemas, and security policies
• Evaluate and select technologies aligned with performance, security, and cost goals.

Build & Implementation

• Install, configure, and optimize firewalls: Fortinet FortiGate and Cisco Firepower (including FMC, policy objects, IPS/IDS, SSL inspection, HA clustering, SD‑WAN)
• Configure enterprise switches: Cisco Catalyst/Nexus and Juniper EX/QFX (VLANs, STP, LAG/MLAG, VRRP/HSRP, QoS, port‑security, 802.1X)
• Implement site rollouts, migrations, and cutovers with minimal downtime
• Maintain and configure SASE platform

Operation & Security

• Own Level 3 incident/problem management; perform advanced troubleshooting (packet captures, flow analysis, logs)
• Maintain firewall and switch gold configs, rule hygiene, and change control (ITIL)
• Ensure compliance with security baselines, segmentation, and zero‑trust principles
• Monitor capacity/performance and proactively remediate risks

Automation & Scripting

• Build and maintain automation for configuration, compliance checks, and deployments using Python and/or Ansible (e.g., templates, linting, CI/CD pipelines)
• Develop scripts for backup/restore, inventory, API‑based object management (Fortinet/Cisco/Juniper)
• Work cross‑functionally with Workplace, Cloud, Security, and Site Operations teams
• Support audits and contribute to policy development and continuous improvement
• Mentor junior engineers; act as technical escalation point

Travel

• Travel to German sites for installations, surveys, and hands‑on support (approx. 10–25%, as needed)

Required Qualifications

• 5–8+ years in enterprise networking with multi‑site/global exposure
• Proven expertise with Fortinet FortiGate and Cisco Firepower (FMC), including policy creation, NAT, VPN (IPsec/SSL), and HA
• Strong experience with Cisco and Juniper switching (Layer 2/3, routing protocols OSPF/BGP, EVPN/VXLAN nice to have)
• Solid understanding of network security (segmentation, NAC/802.1X, IDS/IPS, TLS inspection), DNS/DHCP/IPAM, and PKI fundamentals
• Automation: Proficiency in Python and/or Ansible for network tasks; experience with Git‑based workflows
• Experience operating under ITIL (Change/Incident/Problem) and creating high‑quality documentation
• Excellent communication skills; comfortable in an international environment.
• Language: Professional German and English are required
• Certifications (one or more of the following)
• Fortinet: NSE 4/5/6 (NSE 7 is a plus)
• Cisco: CCNP Enterprise or CCNP Security (CCIE a plus)
• Security: CompTIA Security+ or CISSP (plus)

Nice‑to‑Have

• Familiarity with cloud networking (Azure)
• Exposure to modern NAC (Cisco ISE, Aruba Clearpass), SASE/ZTNA, and wireless (Cisco Meraki, Juniper MistAI)
• Observability tools (e.g., SolarWinds, Zabbix, Grafana)

You can expect from us

• Varied tasks in a friendly team
• A secure job in a systemically important industry
• Flexible working hours, the option of mobile work (partially), and 30 days of vacation per year
• Diverse opportunities for professional development and further training, such as soft skills training and MS Office courses for persuasive communication, successful collaboration, project work, and digital literacy – from entry‑level to expert level
• Attractive benefits, including company health management, company pension scheme, accident insurance, family services, employee referral program, discounted FitX membership, Edenred City Card, and employee discounts as part of our corporate benefits program

Your qualifications and strengths are what matter to us. That's why everyone is welcome, regardless of origin, gender, religion or worldview, disability, age, or sexual identity!

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