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Network Security Engineer

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Onsite

Network Security Engineer

Adentis Portugal

Network Security Engineer

Skills

RITILChange Management

25 days ago

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Important information


Contract type:

Permanent

Location:

Lisbon, Portugal

Work mode:

Onsite

Published on:

29 September 2026

What they need


With a decade of presence in the market, we count on over 200 professionals sharing our core mindset. We deliver value across three main service pillars:

  • Strategy (Outsourcing, NeXel, Team as a Service, Tech Academies);
  • R&D (Internships, Proofs of Concept, Innovation Lab);
  • Nearshore Services .

At our core, we prioritize PEOPLE . This is our emotional salary:

  • Work-life integration and balance;
  • Flexible daily work dynamics;
  • Comprehensive health coverage for staff and dependants;
  • Regular Team Building activities;
  • Exclusive perks across a network of over 300 partners;
  • Continuous learning backed by a dedicated training & certification hub;
  • Ongoing guidance and feedback tailored to your individual roadmap;
  • Transparent career advancement driven by structured performance reviews.

Key Responsibilities

  • Manage and maintain Cisco, Check Point, and Fortinet firewall infrastructures.
  • Provision, modify, audit, and decommission security rules, objects, and access policies.
  • Configure and support site-to-site VPN tunnels and remote access solutions.
  • Perform detailed troubleshooting of connectivity, NAT settings, routing issues, security policies, and deep packet inspection.
  • Execute firmware updates, system patching, and platform hardening procedures.
  • Monitor network availability, health status, capacity trends, and operational performance.
  • Participate actively in incident resolution, root-cause problem analysis, and change management workflows.
  • Conduct rule base optimization, removing redundant, obsolete, or overly permissive policies.
  • Keep infrastructure documentation, CMDB assets, topology maps, and operational runbooks fully up to date.
  • Log, manage, and follow up on technical support vendor tickets through to final resolution.

Technical Skills

  • Cisco Secure Firewall / Firepower and FMC management.
  • Check Point Quantum, Security Management, and CloudGuard ecosystems.
  • Fortinet FortiGate, FortiManager, and FortiAnalyzer suite.
  • Hands-on knowledge of VPNs, IPS/IDS, NAT, routing protocols, network segmentation, and High Availability setups.
  • Log analysis proficiency and experience integrating security devices with SIEM and monitoring platforms.
  • Understanding of ITIL framework and hands-on exposure to ITSM systems.

Candidate Profile

  • Ideally 5+ years of hands-on experience in Network Security.
  • Solid practical experience operating products from at least two of the three major vendors (Cisco, Check Point, Fortinet).
  • Proven capability to work independently in mission-critical environments.

Desirable Certifications

  • Cisco CCNP Security or CCNA Security;
  • Check Point CCSA or CCSE;
  • Fortinet FCP, FCA, or equivalent vendor qualifications;
  • ITIL Foundation.

If you want to be part of a People First organization, join our team!

We walk with you!

At our company, we champion equality and celebrate diversity. We foster an inclusive and safe workplace where opportunities are open to everyone! We maintain zero tolerance for discrimination based on age, background, sexual orientation, gender identity, disability, or any criteria unrelated to merit. Every qualified professional who fits the profile is warmly invited to apply!

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