Network Security Specialist Lisboa

Network Security Specialist
Lisboa
Lisboa, Lisboa, Portugal

Want to Make Waves in Tech? GBT Solutions Is the Place to Be!

About Us:

GBT Solutions is a Portuguese technology company founded in 2018, part of the HFA Group established in 1995. With a focus on delivering
- edge solutions across various industries, we are committed to fostering a diverse and inclusive work environment and are proud to be recognized for our commitment to excellence and innovation.

Position: Network & Security Specialist

Location: Lisbon, Portugal (Hybrid – 1x/week
- office)

What You’ll Do:

• Provide 2nd-line technical support in network environments (LAN/WAN/Wi-Fi);

• Diagnose and resolve connectivity, performance, and security issues;

• Administer and monitor Check Point security solutions (e. g. , firewalls, VPNs);

• Manage and configure F5 appliances (BIG-IP, LTM, ASM, etc. );

• Participate in network infrastructure improvements and optimization initiatives;

• Document technical procedures, incidents, and configurations;

• Collaborate with internal teams and external vendors to resolve complex issues.

What We’re Looking For:

• Strong knowledge of IP networks and
- on experience with Check Point and F5 solutions;

• Degree in Information Technology, Computer Engineering, or equivalent;

• 2–3 years of professional experience in similar roles;

• Experience with Check Point firewalls (minimum certifications: CCSA, CCST) and F5 (e. g. , F5-CTS);

• Proficiency in TCP/IP networking, switching, routing, NAT, VPNs;

• Experience with F5 Networks solutions, especially BIG-IP, LTM, and i
Rules;

• Familiarity with troubleshooting tools like Wireshark, tcpdump;

• Scripting knowledge (e. g. , Power
Shell, Shell) and experience with automation;

• Knowledge of CISCO ACI;

• Ability to work under pressure in critical environments;

• Understanding of ITSM frameworks, particularly ITIL;

• Willingness to work
- standard hours /
- call as needed;

• Strong communication, synthesis, and writing skills.

Equal Opportunity:

GBT Solutions is an equal opportunity employer and values diversity. We do not discriminate based on age, ethnicity, sexual orientation, gender, disability, or any other factor other than merit.