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 SeniorNetwork 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.

You must

have:

• 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.

Nice to have:

• 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.

We

offer:

• Regular professional

  development.

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

Workplace: Lisbon (Hybrid)

Claranet:

Make Modern Happen!