Description
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.

Responsibilities
Architecture & Design
- 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 (e.g., templates, linting, CI/CD pipelines)
- Develop scripts for backup/restore, inventory, API-based object management (Fortinet/Cisco/Juniper)

Collaboration & Governance
- Work cross-functionally with Workplace, Cloud, Security, and Site Operations teams
- Support audits and contribute to policy development and continuous

📌 Network Administrator (España)
🏢 Synlab Global
📍 España