IT Security Engineer

Keytrade Bank; Brussel Hoofdstad; Sur place; EUR 90 000 - 120 000; Plein temps

Avantages offerts par ce poste

Meal vouchers

Teleworking allowance

Transport allowance

Group insurance

Hospitalisation insurance

Résumé du poste

Keytrade Bank is seeking a senior network & security engineer to reinforce the Network & Security team in Brussels. You will stabilize, maintain, and oversee a complex hybrid infrastructure while mentoring junior team members and acting as the go‑to escalation point for technical incidents.

You will report to the Head of Network & Security and collaborate closely with Risk & Security. The role covers routing, switching, firewalling, load balancing, and hybrid cloud connectivity in a fast‑moving

Qualifications

• 5+ years of experience in network engineering.
• Strong enterprise routing & switching expertise.
• Hands-on with Cisco Catalyst switches/routers, Palo Alto and/or Fortigate firewalls, and F5 BigIP LTM.
• Experience in hybrid cloud-connected environments.
• Solid troubleshooting skills (L3).
• Professional English (written & spoken).
• Have a clean certificate of good behavior.

Responsabilités

• Oversight of routing & switching infrastructure (Cisco-based).
• Oversight of firewalling and perimeter security (Palo Alto, Fortigate, Juniper).
• Oversight of load balancing (F5 BigIP LTM).
• L3 escalation support for internal IT teams.
• Maintain, monitor, and stabilize hybrid cloud connectivity.
• Coordinate with telecom providers, partners and external vendors.
• Ensure documentation and operational best practices.

Connaissances

5+ years experience

Routing & Switching

Cisco Catalyst

Palo Alto / Fortigate

F5 BigIP LTM

Hybrid cloud

Troubleshooting (L3)

English proficiency

Certificate of good behavior

Outils

Python

Ansible

Terraform

Linux RedHat

Description du poste

Do you want to join the exciting and innovating world of online banking?

Keytrade Bank is part of the Crédit Mutuel Arkéa Group, a well-established and reliable French banking group headquartered in Brest. As a pioneer in online banking in Belgium, Keytrade has grown into a fully digital bank offering a wide range of daily banking, investment and trading services.

Over the past years, we have experienced strong growth, doubling our client base in 5 years and continuously expanding our teams.

Unlike traditional banks, we operate with a dynamic, agile and scale-up mindset. We are a Brussels-based financial institution (± 400 employees) operating in a highly available, hybrid multi-cloud environment.

We are looking for a senior network & security engineer to reinforce our Network & Security team.

This role is both hands‑on and technical lead oriented (50/50). You will stabilize, maintain, and oversee a complex hybrid infrastructure while mentoring junior team members and acting as the go‑to escalation point.

You will report directly to the Head of Network & Security and collaborate closely with our dedicated Risk & Security team.

Responsibilities

Main Responsibilities

• Oversight of routing & switching infrastructure (Cisco-based environment)
• Oversight of firewalling and perimeter security (Palo Alto, Fortigate, Juniper)
• Oversight of load balancing (F5 BigIP LTM)
• L3 escalation support for internal IT teams
• Maintain, monitor, and stabilize hybrid cloud connectivity
• Coordinate with telecom providers, partners and external vendors
• Ensure documentation and operational best practices

Technical environment

• Network fabric
• Cisco switches & routers
• F5 BigIP LTM

Skills

What we are looking for

Must have

• 5+ years of experience in network engineering
• Strong expertise in enterprise routing & switching
• Proven hands‑on experience with:
  • Cisco Catalyst switches and routers
  • Palo Alto and/or Fortigate firewalls
  • F5 bigIP LTM
• Experience working in hybrid cloud-connected environments
• Solid troubleshooting skills (L3 level)
• Professional English (written & spoken)
• Have a clean certificate of good behavior.

Nice to have

• Certifications such as CCNP/CCIE, Palo Alto next gen firewall engineer or Fortinet NSE
• Experience with Cisco Catalyst center
• Experience with scripting/automation languages
  (Python, Ansible and/or Terraform)
• Experience in financial services environments
• Experience with Linux RedHat
• Experience with traditional Microsoft products
• Operationally strong and comfortable in complex environments
• Structured, documentation-oriented mindset
• Calm and pragmatic under pressure
• Capable of balancing hands‑on work with technical coordination
• Natural mentor with strong communication skills
• Autonomous and delivery-focused

Offer

• Hybrid way of working: 50% office / 50% home working
• Agile way of working
• Green surroundings
• An inclusive workplace with nice colleagues
• A competitive salary package with advantages such as:
  • Meal vouchers: €10 / working day
  • Teleworking allowance
  • Transport allowance
  • Group insurance
  • Hospitalisation insurance