Senior Network Engineer

We're fast
learners, hard workers, natural collaborators... and we Make
Modern Happen!

Our
ambition is to unlock the potential of our digital world so that organisations
everywhere can innovate and thrive securely.

We aim to
achieve this goal by bringing together the world’s most talented people and the
most powerful technologies, combining them to address our customers' challenges
and to build something stronger together.

If you
share our vision, join us!

Right now,
we are looking for a Senior Network Engineer to integrate
our internal team, based in Lisbon.

Your
responsibilities include:

• Data Center
  Networking (Cisco ACI): Operate, configure and troubleshoot Cisco ACI fabrics
  (tenants, VRFs, bridge domains, EPGs, contracts, L3Outs), ensuring availability
  and performance.
  
• LAN/Campus
  Switching (Huawei): Manage the Huawei switching infrastructure (VLANs, STP,
  LACP, stacking, L3 routing), including configuration, firmware upgrades and
  troubleshooting.
  
• Firewall
  & Network Security: Administer Palo Alto and Fortinet firewalls – security
  policies, NAT, site-to-site and remote-access VPNs, threat prevention profiles,
  HA and firmware lifecycle.
  
• Azure
  Networking & Security: Operate and evolve Azure network components (VNets,
  peering, VPN Gateway/ExpressRoute, NSGs, Azure Firewall, Application
  Gateway/WAF, Private Endpoints) and hybrid connectivity with on-premises.
  
• Incident
  & Problem Management: Act as L2/L3 escalation point for network and
  security incidents, performing root cause analysis and implementing permanent
  fixes.
  
• Change
  Management: Plan, document and execute network changes in line with ITIL
  processes and the client's change windows.
  
• Monitoring
  & Capacity: Monitor network health and capacity (e.g. Zabbix/Grafana),
  proactively identifying risks and improvement opportunities.
  
• Documentation:
  Maintain up-to-date network diagrams, configurations, procedures and knowledge
  articles.
  
• Client
  Collaboration: Work as part of the client's ICT Squad (Network & Security),
  in close collaboration with the client's technology team, supporting sprint
  planning and network/security projects.
  

• 5+ years of
  experience in enterprise network engineering/operations;
  
• Hands-on
  experience with Cisco ACI;
  
• Solid
  experience with Huawei switching;
  
• Experience
  administering Palo Alto and Fortinet firewalls;
  
• Experience
  with Azure Networking and Security services;
  
• Strong
  routing & switching knowledge (BGP, OSPF, VLANs, STP) and VPN technologies;
  
• Fluent
  Portuguese and good English (written and spoken);
  
• Interpersonal
  relationship and teamwork;
  
• Proactivity,
  initiative and good analytical ability.
  
  

• Network/security
  certifications: Cisco CCNP/CCIE (Data Center or Enterprise), Palo Alto PCNSE,
  Fortinet NSE 4 or higher, Microsoft AZ-700,
  
• Hold ITIL
  certification,
  
• Experience
  in client-facing / onsite and Agile (squad, sprint) delivery models,
  
• Knowledge
  of monitoring tools (Zabbix, Grafana),
  
• Problem-solving
  skills,
  
• Good
  communication,
  
• Stress
  management and emotional control,
  
• Results-oriented.
  

• Regular professional
  development.
  
• Certification paths resources.
  
• Regular team building programs.
  
• Friendly workplace.
  

 Workplace: Lisbon (Hybrid)  

Claranet:
Make Modern Happen!