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Network Administrator
hace 2 semanas
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.
ResponsibilitiesArchitecture & Design
- 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)
Collaboration & Governance
- 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
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 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)
- Juniper: JNCIS-ENT / JNCIP-ENT (JNCIE 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)
