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Senior Network Security Engineer

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JOB REF NO:

JOBX-11999FF6

Job Description:

We are looking for a Senior Network Security Engineer with experience in enterprise environments and critical incident management, to ensure the operation, evolution, and security of network infrastructures in a hybrid setup in Lisbon.

Responsibilities:

  • Manage and resolve critical network security incidents (P1/P2), including root cause analysis;
  • Ensure service mitigation and recovery, participating in major incidents / war rooms;
  • Coordinate with SOC, NOC, vendors, and client teams;
  • Plan and execute complex changes, including migrations and new implementations;
  • Assess risks and define rollback strategies;
  • Validate configurations before and after changes;
  • Administer and optimize security solutions (NGFW, VPN, ZTNA, Anti-DDoS, EDR/XDR);
  • Perform upgrades, hardening, and policy optimization;
  • Monitor performance, capacity, and availability;
  • Identify opportunities for technical and operational improvements;
  • Implement and evolve network security architectures;
  • Maintain technical documentation;
  • Act as technical owner for assigned environments;
  • Support internal teams in solution design;
  • Diagnose and resolve complex issues in distributed environments.

Requirements:

  • Bachelor’s degree in Computer Science, Information Technology, or related field;
  • Minimum of 5 years of experience in network security;
  • Experience in enterprise or Managed Services environments;
  • Proven experience handling critical incidents in 24x7 environments;
  • Strong knowledge of 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 skills in complex environments;
  • Ability to design, implement, and assess security solutions;
  • High level of technical autonomy and experience in multi-client environments;
  • Strong analytical thinking and decision-making skills;
  • Good communication and teamwork skills;
  • Ability to work under pressure;

 

  • Proactive mindset with focus on continuous improvement.

Shape your future with us @Xtedder

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+351 213 861 550

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Av. Engenheiro Duarte Pacheco Amoreiras
Torre 1, Piso 3 S9
1070-101
Lisbon, Portugal