Introduction

Brunel is looking for a project in Leuven for a Senior Security Engineer.

Do you have 5+ years of hands‑on experience in SOC operations, threat detection and pentesting, and you love tackling security challenges head‑on, then you're the Security Engineer we are looking for!

What are you going to do 

As a Senior Security Engineer, you play a key role in protecting a complex enterprise IT environment against internal and external cyber threats.

You work both proactively and reactively, typically as part of the Security Operations Center (SOC), and contribute your expertise to advanced monitoring, investigation, and remediation activities.

Responsibilities:

  • Proactively and reactively monitor, investigate, and remediate security incidents
  • Investigate suspicious activities and take appropriate mitigating actions
  • Maintain and optimize security monitoring tools and detection capabilities
  • Perform penetration testing and vulnerability assessments to identify weaknesses
  • Document, test, and monitor security incidents and assess their impact
  • Contribute to improving detection use cases and security controls
  • Collaborate with SOC analysts, incident responders, and other cybersecurity stakeholders

You'll work 2-3 days on-site in Leuven, Mechelen or Brussels, the remaining days working remotely.

Essential skills and knowledge

You have 5+ years of hands‑on experience in SOC operations, threat detection and pentesting, understand how to detect patterns, assess risks and take ownership of security processes.

You are comfortable working in a complex enterprise environment and collaborating with different IT and business stakeholders.

Skills & Qualifications:

  • Strong expertise in SOC monitoring and SIEM platforms (Splunk, Sentinel, QRadar, Elastic)
  • Proven experience in incident response, root cause analysis, and forensic investigation
  • Hands-on experience with pentesting, vulnerability management, and web/application security
  • Knowledge of Agile methodology, cyber risk management, and information security frameworks
  • Experience with cloud and container security (Azure Defender, Kubernetes)
  • Familiarity with network security technologies (Palo Alto, Snort, Zscaler)
  • Understanding of governance frameworks such as ISO 27001, NIST CSF and DORA

You communicate fluently in Dutch and English.

What we offer 

At Brunel, you get more than just challenging projects. We make sure you feel valued from day one with a structured onboarding program, regular events to help you integrate quickly, and a personalized development plan to support your growth.

In addition, we offer an attractive and comprehensive salary package, including a company car, 13th month, annual bonus, monthly net allowance, meal and eco vouchers, a mobile phone subscription, hospitalization and group insurance, and 32 vacation days.

Freelancers, we offer a competitive rate.

Closing: 10 June 2026

Apply Now

Are you the perfect match for this vacancy? Apply in 5 minutes and let's get in touch!

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Process of your application

Application process & contact

We will now begin examining your application: We will take a close look at your application documents and ask you for additional information if necessary. If your qualifications match our requirements, we will invite you to meet us for the first time.

Project discussion with our customer

If the introductory meeting goes well for you and us, we will arrange a meeting with the customer who has the perfect project for you. This gives you the opportunity to find out more about the customer and the project.

The decision

If you enjoyed the project discussion and the customer is also convinced of your expertise, we will ask you the final and decisive question: Do you want to get started at Brunel?

Introductory conversation with Brunel

In an introductory meeting, we would like to find out more about your interests, ambitions and professional developments. At the same time, we report on working at Brunel and provide information about all career opportunities and prospects.

Welcome to Brunel

Now great times are beginning! With Brunel you have countless opportunities to help shape technological progress. You decide how your career path goes. We support you in every phase of your career. You always have security behind you: Brunel!