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Network Administrator (m/f/d)

role at

SYNLAB International

As 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 Responsibilities

Define scalable, secure LAN/WAN/SD‑WAN architectures and standards for general 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

Develop scripts for backup/restore, inventory, API‑based object management (Fortinet/Cisco/Juniper)

Work cross‑f

📌 Network Administrator (Madrid)
🏢 Synlab International
📍 Madrid