Senior Network Security Engineer – Firewall & Segmentation Expert

Unleash the Power of Network Security—Drive Resilience and Innovation in a Leading Enterprise!

Lisbon-based opportunity with hybrid work model (up to 3 remote days per week).

As a Senior Network Security Engineer, you will be working for our client in the international banking sector, within an enterprise IT production environment. You will be responsible for the operational maintenance of the security infrastructure, the implementation and optimisation of firewall policies and network segmentation, and you will act as the reference expert for network security across technical domains.

Your main responsibilities:

• Diagnose malfunctions, clear flow blockages and ensure the high availability of the security infrastructure, in line with agreed SLAs.
• Implement, code, maintain and optimise firewall policies and segmentation rules following security best practices.
• Design and implement micro-segmentation rules across the enterprise environment.
• Act as subject matter expert for network security: guidance, training, alerts and verification of compliance with IT security standards.
• Interface with technical experts across the other IT and infrastructure domains.
• Handle incidents, requests and changes with proper documentation, in line with ITIL practices.

You're ideal for this role if you have:

• 6+ years of experience in network security and IT production operations (incidents, requests, changes, documentation).
• Hands-on experience with NSX-T / VCF9, Palo Alto and Fortinet.
• Practical experience coding and implementing firewall security rules and micro-segmentation.
• Experience with firewall rule optimisation and automation. (1/2)
• Experience working to SLAs and quality-of-service commitments in a production environment.

Language Required for the role:

• English + French, OR English + Portuguese (bilingual proficiency)

Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role.

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Interested? Apply now and include your CV (preferably in English), along with a statement confirming your consent to the processing and storage of your personal data.