IT Security Engineer

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 an Infrastructure Security Engineer to strengthen the security posture of our IT infrastructure.

This role focuses on protecting on-premises and cloud environments, hardening systems, monitoring threats, responding to security incidents, and collaborating with infrastructure and networking teams to ensure secure operations.

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

Responsibilities

Main Responsibilities

• Design / implement / maintain security infrastructures (on-prem & cloud)
• Monitor security alerts and perform incident response + forensic investigations
• Manage and improve EDR/XDR solutions to ensure the security of the bank
• Manage the SIEM Infrastructure (Ingesting new log sources / developing custom correlation rules / creation of dashboards)
• Manage patching strategies for operating systems and infrastructure components
• Support DevSecOps initiatives (HParameter store / CICD security)
• Perform vulnerability assessments and coordinate remediation activities
• Hardening of Windows / Linux servers & services according to best practices
• Hardening of cloud infrastructures (AWS & Azure)
• Administer and maintain Web Application Firewall (WAF)
• Improve and maintain the PKI infrastructure
• Improve and maintain data leak prevention (DLP) measures across the company

Skills

What we are looking for

Must have

• 5+ years of experience as a security engineer
• Strong expertise in cybersecurity
• Proven hands-on experience with:
• DevSecOps
• SIEM infrastructure
• Incident response
• 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 GIAC, Azure security engineer associate, CISSP, AWS security certifications
• Experience with CIS hardening
• Experience with scripting and automation languages
• (Python, Ansible and/or Terraform)
• Experience in financial services environments
• Experience with container security (EKS / AKS / Docker, …)
• Experience with Microsoft products (Microsoft Pureview, Microsoft 365, …)

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

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