Freelance senior network engineer

Freelance Senior Network Engineer

Freelance / Senior Network Engineer / Antwerpen/ daily rate depending on experience

Your new company

You will join a highly professional, future‑focused financial organization with a strong reputation for stability, long‑term vision and high‑quality IT operations. The environment is mature, security‑driven and built on modern enterprise technologies. You will work in a collaborative engineering culture where expertise is valued, decisions are made quickly, and technical ownership is encouraged.

Your new role

As a Senior Network Engineer, you will shape and evolve the enterprise network and security architecture. You take ownership of lifecycle management, complex engineering challenges, and modernization initiatives.A major focus of the role is hands‑on expertise with Juniper infrastructure and Palo Alto firewalls — these are essential core technologies.
Key responsibilities include:
1. Designing and improving enterprise network & security architecture (HLD/LLD).
2. Leading lifecycle roadmaps, migrations and modernization projects.
3. Deep‑dive engineering: complex configurations, packet‑flow analysis, performance tuning.
4. Acting as senior escalation point for incidents and problem management.
5. Implementing NGFW, IDPS, NAC, WAF and Zero Trust controls.
6. Ensuring compliance with ISO 27001 and internal governance.
7. Creating high‑quality documentation and driving automation initiatives.

Your profile

You are a senior engineer with strong architectural insight, deep technical expertise and a hands‑on mindset. You thrive in complex environments and enjoy taking ownership of critical network and security domains.
Must‑have technical expertiseThese are essential for the role:
8. Strong hands‑on experience with Juniper networking (EX, QFX, Mist, Apstra).
9. Expert‑level experience with Palo Alto firewalls (NGFW, Panorama, Prisma Access).
Additional skills
10. Deep knowledge of enterprise routing, switching, firewalls and load balancing.
11. Experience with EVPN, VXLAN, BGP and large‑scale network infrastructures.
12. Strong packet‑flow analysis, performance tuning and traffic engineering skills.
13. Experience with NGFW, IDPS, WAF, NAC and identity‑driven security models.
14. Familiarity with F5 LTM/ASM, Infoblox, Cloudflare, Elastic, Git, Docker, WSL.
15. Understanding of Azure Networking and basic Linux/Windows.
16. Strong communication skills, ability to justify technical decisions and coach others.
17. Strategic, analytical and proactive mindset.

What you need to do now

Are you interested in this role? Please click 'apply now' to forward an up-to-date copy of your CV, or call us now.

If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.


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