IT Security Engineer

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)
• Microsoft Teams Telephony (VoIP , … )
• 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

• Hybrid multi-cloud: on-premises datacenters & AWS & Azure
• Network fabric
• Cisco switches & routers
• Palo Alto, FortiGate & Juniper firewalls
• F5 BigIP LTM
• Entreprise Wi-Fi infrastructure

• 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

Soft skills

• 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

• 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

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.