Network Administrator

Join to apply for the Network Administrator (m/f/d) role at SYNLAB InternationalAs the European market leader in laboratory diagnostics, the SYNLAB group operates internationally since 2010 with about 24,000 employees dedicated to human medicine.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, and streamline operations via scripting.Key ResponsibilitiesDefine scalable, secure LAN/WAN/SD‑WAN architectures and standards for global sitesProduce high‑quality HLD/LLD documentation, network diagrams, IP schemas, and security policiesEvaluate and select technologies aligned with performance, security, and cost goalsBuild & ImplementationInstall, 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 downtimeMaintain and configure SASE platformOperation & SecurityOwn 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 principlesMonitor capacity/performance and proactively remediate risksAutomation & ScriptingBuild and maintain automation for configuration, compliance checks, and deployments using Python and/or AnsibleDevelop scripts for backup/restore, inventory, API‑based object management (Fortinet/Cisco/Juniper)Work cross‑functionally with Workplace, Cloud, Security, and Site Operations teamsSupport audits and contribute to policy development and continuous improvementMentor junior engineers; act as technical escalation pointRequired Qualifications5–8+ years in enterprise networking with multi‑site/global exposureProven expertise with Fortinet FortiGate and Cisco Firepower (FMC), policy creation, NAT, VPN (IPsec/SSL), and HAStrong 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 fundamentalsAutomation: proficiency in Python and/or Ansible; experience with Git workflowsExperience operating under ITIL (Change/Incident/Problem) and creating high‑quality documentationExcellent communication skills; comfortable in an international environmentLanguage: Professional German and English requiredCertifications (one or more): Fortinet NSE 4/5/6 (NSE 7 plus), Cisco CCNP Enterprise or CCNP Security (CCIE plus), Security: CompTIA Security+ or CISSP (plus)Nice‑to‑haveFamiliarity with cloud networking (Azure)Exposure to modern NAC (Cisco ISE, Aruba Clearpass), SASE/ZTNA, and wireless (Cisco Meraki, Juniper Mist AI)Observability tools (SolarWinds, Zabbix, Grafana)What We OfferA demanding, varied and challenging activity in a successful and fast‑growing international companySpace for an independent and self‑sufficient way of workingA friendly and open working atmosphereAn expert environment with flat hierarchies and short ways for decisionsA dynamic team that is looking forward to meeting you#J-18808-Ljbffr