Network Security Engineer | Porto | Hybrid

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

We are growing. And we are looking for talented people.

At Decskill, we believe that technological excellence is driven by human talent.

We are an IT consulting company with more than 10 years of consolidated experience in the market, focused on building long‑term relationships with both our clients and our people. Today, we are a community of over 800 professionals, working from Lisbon, Porto, and Madrid, contributing to impactful technology initiatives.

As part of the Astek Group, we combine a strong local culture with a global presence, being active in around 23 countries across 4 continents. This allows us to offer an international context, diverse challenges, and long‑term career opportunities, while staying close to our teams.

Network Security Engineer for a project in Porto with a hybrid working model:

This role focuses on security and internet architectures for external connectivity platforms, covering level 2/3 support, design, deployment and run activities within an Infrastructure, Production and Security team.

Key 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.

Required Experience:

• 5+ years of experience working on security infrastructure solutions.
• Strong knowledge of firewall technologies (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 (mandatory).

Nice to Have:

• French at B2 level.

Conditions:

• Local contract in Porto.
• Availability for night and weekend operations when needed.

What you can expect from us:

• Long‑term projects with national and international context
• Opportunities to grow technically and professionally
• A people‑first culture, focused on transparency and trust
• Teams that value ownership, collaboration and stability

Your next challenge might start here!

At Decskill, we are committed to equal opportunities and non‑discrimination. We promote a culture of diversity and inclusion, where recruitment and career progression are based solely on talent, regardless of age, gender, ethnicity, race, nationality, or any other form of discrimination incompatible with human dignity.