Senior Network Security Engineer

Felps Lisboa; Lisboa; Presencial; EUR 90 000 - 120 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

International mission

On-site in Lisbon

Resumo da oferta

Felps Lisboa is seeking an experienced F5 BIG-IP expert to join an international infrastructure security mission in Lisbon. You will audit, plan and execute upgrades, and apply vulnerability remediation to ensure resilient, secure F5 environments.

The role is on-site in Lisbon with collaboration across international security, network and infra teams. 5+ years of hands-on F5 BIG-IP experience and TMOS/LTM/GTM/DNS knowledge are essential.

Qualificações

• 5+ years hands-on F5 BIG-IP experience.
• Strong TMOS upgrade / version lifecycle management.
• Solid knowledge of LTM, GTM/DNS, ASM/AWAF and/or APM.
• F5-CA or F5-CTS certification is a plus.

Responsabilidades

• Audit existing F5 infrastructure (TMOS, modules, config).
• Plan and execute BIG-IP upgrades (LTM, GTM/DNS, ASM/AWAF, APM).
• Apply security patches under a vulnerability remediation plan.
• Analyze scan reports and prioritize fixes.
• Post-upgrade non-regression testing (HA, load-balancing, iRules/iApps).
• Documentation and rollback planning.
• Coordinate with international security, network and infra teams.

Conhecimentos

F5 BIG-IP

TMOS upgrades

Security patching

Vulnerability remediation

Infrastructure security

Ferramentas

LTM

GTM/DNS

ASM/AWAF

APM

F5-CTS/CA

Descrição da oferta de emprego

A community of passionate experts, bringing together deep technical expertise to help organisations scale, transform, and reach new levels of performance.

Our Expertise

Felps Group is an alliance of Pure Players, organised into four specialised Squads: Telecom, IT, Cybersecurity, and Change Management.

Each Squad is led by a Captain, a domain expert supporting consultants in mission selection, technical growth, and long-term career development.

At Felps Lisboa, we combine local market expertise with international delivery, placing high-impact talent into complex and evolving environments.

Our Approach

At Felps, the consultant is at the centre of everything we do.

We focus on delivering meaningful roles where consultants can contribute, grow, and have real impact — particularly in data, automation, and AI-driven transformation projects.

Diversity & Inclusion

We are committed to building an inclusive, collaborative, and respectful environment.

All qualified candidates are encouraged to apply, including individuals with recognised disabilities (RQTH).

F5 BIG-IP Expert – Upgrades, Migrations & Vulnerability Remediation

Lisbon, Portugal (on-site) | International mission | ASAP start

Looking for an experienced F5 BIG-IP expert to join an international infrastructure security mission in Lisbon.

You’ll be responsible for:

• Auditing existing F5 infrastructure (TMOS, modules, config)
• Planning and executing BIG-IP upgrades (LTM, GTM/DNS, ASM/AWAF, APM)
• Applying security patches under a vulnerability remediation plan
• Analyzing scan reports and prioritizing fixes
• Post-upgrade non-regression testing (HA, load-balancing, iRules/iApps)
• Documentation and rollback planning
• Coordinating with international security, network and infra teams

What we need:

• 5+ years hands-on F5 BIG-IP experience
• Strong TMOS upgrade / version lifecycle management
• Solid LTM, GTM/DNS, ASM/AWAF and/or APM knowledge
• Vulnerability remediation / patch management experience
• F5-CA or F5-CTS a plus
• Based in or open to relocating to Lisbon