Senior Network Security Engineer – Hybrid Role in Porto

Decskill; Porto; Hybrid; EUR 42,000 - 65,000; Full time

Job summary

Decskill is seeking a Network Security Engineer for a Porto project with a hybrid working model. You will focus on security and internet architectures, providing level 2/3 support, design, deployment and run activities within an Infrastructure, Production and Security team.

Minimum 5+ years of experience, strong firewall experience (Fortinet, Palo Alto), F5 load-balancers, WAF, DNS/IPS/IDS, and English at B2. Nice to have French B2. Local Porto contract with night/weekend on-call rotation.

Qualifications

• Minimum 5+ years of experience in security infrastructure.
• Strong firewall knowledge (Fortinet, Palo Alto).
• Experience with load-balancing technologies (F5).
• Experience with WAF technologies (Ubika or similar).
• Knowledge of DNS, IPS and IDS.
• Knowledge of perimeter operations, capacity planning and resiliency.
• Good communication, organisational, analytical and problem‑solving skills.
• Autonomous, team player and fast learner.
• English at B2 level.

Responsibilities

• Carry out studies and maintain operational conditions of internet, partner and market data architectures.
• Provide supervision and level 2/3 support on security, internet, market data and partner infrastructures.
• Upgrade and deploy security devices on the network.
• Design solutions for new technologies or versions, client projects, capacity planning and resiliency.
• Automate perimeter processes and controls.
• Perform common operations such as VIP creation, DMZ creation and L2L VPN deployment.
• Perform basic and advanced debugging (firewall/WAF traces, log analysis, advanced technical commands, Fortinet synchronization checks).
• Handle RMA and installation activities: installation from scratch, configuration and testing.
• Carry out proofs of concept for new functionalities and technologies.
• Take part in night and weekend operations when needed and in the service on‑call rotation.

Skills

Security infrastructure

Load balancing

WAF technologies

DNS/IPS/IDS

Perimeter operations

English (B2)

Tools

Fortinet

Palo Alto

F5 BIG-IP

Ubika WAF

Job description

Decskill is seeking a Network Security Engineer for a Porto project with a hybrid working model. You will focus on security and internet architectures, providing level 2/3 support, design, deployment and run activities within an Infrastructure, Production and Security team.

Minimum 5+ years of experience, strong firewall experience (Fortinet, Palo Alto), F5 load-balancers, WAF, DNS/IPS/IDS, and English at B2. Nice to have French B2. Local Porto contract with night/weekend on-call rotation.