Network Security Engineer em Lisboa, Portugal

Who are we:

Neotalent Conclusion is one of the leading Iberian specialists providing services in Information Technology and Engineering services. As part of the Netherlands-based organization Conclusion, which has an ecosystem of over 25 companies and 3,600 employees, we are focused on increasing the technological capacity of our clients and the digital transformation of their application ecosystems.

We are talent specialists, attracting the best people and combining them with the needs of the most ambitious projects, at the right time. Our success comes from our investments in innovation, our focus on results, and, above all, the guarantee that our people will have happy and rewarding careers.

With over 25 years of solid experience, Neotalent Conclusion has established its presence in key locations, including Lisbon, Porto, and Madrid. The company currently has more than 950 professionals in the different areas in which it operates.

Neotalent, the responsive people.

Find out more about us at .

Role Overview

We are looking for a Network Security Engineer to integrate our teams in a client environment. You will work on the design, implementation, and reinforcement of secure network infrastructures, ensuring resilience, hardening, monitoring, and compliance across diverse technological environments. You will be part of a highly skilled team responsible for protecting critical network assets and improving overall security posture.

What you will do:

• Deploy, configure, and maintain next‑generation firewalls and security appliances (Fortinet stack, FortiOS);
• Monitor, analyze, and respond to network security incidents and vulnerabilities;

• Implement secure connectivity solutions, VPNs, segmentation, and zero‑trust aligned architectures;
• Perform network hardening, security assessments, and threat mitigation activities;
• Support ethical hacking and penetration testing activities in line with best practices;
• Ensure documentation, compliance, and operational excellence following security standards.

What you are like:

• Proficient in network security engineering with strong hands‑on experience in firewall management and secure network architectures;
• Skilled in security monitoring, incident response, and vulnerability management;
• Experienced with Fortinet solutions and NSE4 level configuration and policy design;
• Knowledgeable in ethical hacking methodologies (CEH) and risk‑reduction techniques;
• Comfortable working with networking fundamentals and protocols (CCNA level);
• Strong understanding of security best practices supported by CompTIA Security+;
• Analytical, detail‑oriented, and proactive in identifying and mitigating security risks;
• A collaborative team player with strong communication skills;
• Fluent in English.

Why join us:

• Work on challenging projects for big clients;
• Learn more about emerging technologies;
• Possibility of working remotely;
• Design your career plan;
• Access to continuous training and certifications;
• Evolve through our internal mobility program;
• … and much more!

To apply:

Please send your CV to with MSR_NetworkSec in the email subject.

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