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Senior Network Security Engineer (Hybrid -Lisbon)

icon building Empresa : Claranet
icon briefcase Tipo de Emprego : Periodo Integral

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Descrição do Emprego - Senior Network Security Engineer (Hybrid -Lisbon)

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 Security Engineer for a client on our Talent Team.


Your responsibilities include:
  • Manage and resolve critical network security incidents (P1/P2) escalated from L1/L2, including root cause analysis
  • Ensure service mitigation, recovery, and participation in major incidents / war rooms
  • Coordinate with SOC, NOC, vendors, and client teams during critical situations
  • Plan and execute complex or high -impact changes, including migrations and new implementations
  • Assess risks and define rollback strategies for all critical changes
  • Validate configurations before and after implementation
  • Administer and optimize network security solutions (NGFW, VPN, ZTNA, Anti -DDoS, EDR/XDR)
  • Perform system upgrades, hardening, and policy optimization
  • Monitor system performance, capacity, and availability
  • Identify opportunities for technical and operational improvements
  • Implement and evolve network security architectures and solutions
  • Maintain and update technical documentation and procedures
  • Act as technical owner for assigned client environments, ensuring stability and security
  • Support internal teams in designing and evolving network and security solutions
  • Diagnose and resolve complex network and security issues in distributed environments

You must have:
  • Bachelor’s degree in Computer Science, Information Technology, or a related field
  • 5+ years of experience in network security
  • Experience in enterprise environments or Managed Services
  • Proven experience handling critical incidents in 24x7 environments
  • Strong knowledge of network security technologies (Firewalls, VPN, ZTNA, Anti -DDoS, EDR/XDR)
  • Solid understanding of routing, switching, and network architecture
  • Experience with SD -WAN, SASE/SSE, Load Balancers, and secure access technologies (2FA)
  • Strong troubleshooting and problem -solving skills in complex environments
  • Ability to design, implement, and assess network and security solutions
  • High level of technical autonomy and ability to work in multi -client environments
  • Strong analytical thinking and decision -making skills
  • Excellent communication and collaboration skills
  • Ability to work under pressure and manage critical situations
  • Proactive mindset with focus on continuous improvement

Nice to have:
  • Cisco
  • Fortinet
  • Palo Alto
  • Check Point
  • F5, A10
  • Radware, Allot, Imperva
  • Netskope
  • Huawei


We offer:
  • Integration into a dynamic and motivated team for the performance of the role.
  • Additional training.
  • Salary package according to the role performed.
  • Professional development.



Workplace: Lisbon - Hybrid

Claranet, Make modern happen!

Original job Senior Network Security Engineer (Hybrid -Lisbon) posted on GrabJobs ©. To flag any issues with this job please use the Report Job button on GrabJobs.
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