Cybersecurity Engineer

Brussels, BE

FULL_TIME

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About the Position

As a member of our Cybersecurity team, you will be responsible for managing and improving vulnerability management processes, securing infrastructure environments, and driving automation initiatives across hybrid cloud and on-premises environments. You will work closely with infrastructure, cloud, development, security, and compliance teams to strengthen the organization's security posture while ensuring operational efficiency through automation and innovation.

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Responsibilities

• Create custom internal scripts for task automation, data analysis, and API integrations connecting security platforms and infrastructure tools.
• Manage the full vulnerability lifecycle, including identification, assessment, prioritization, remediation tracking, validation, and reporting.
• Prepare vulnerability assessment reports, remediation plans, dashboards, operational procedures, KPIs, and security metrics.
• Coordinate remediation activities across multiple teams to ensure timely patching, security updates, and configuration changes.
• Deploy, administer, secure, and harden Linux, Windows, and VMware ESXi server environments.
• Deploy, configure, and maintain network devices including switches, routers, firewalls, and VPN gateways.
• Design, orchestrate, and deploy scalable and resilient infrastructure services supporting cyber threat management operations.
• Develop and implement automated workflows to reduce manual intervention and prevent recurring incidents.
• Collaborate with IT Infrastructure, Cloud Operations, SOC, Development, Compliance, and external vendors to ensure effective remediation and security operations.
• Monitor and report on vulnerabilities, risk exposure, high-risk assets, actively exploited threats, ticket trends, and security performance indicators.
• Produce and maintain technical documentation for engineers, operators, and end users.
• Troubleshoot mission-critical services and continuously improve operational efficiency through automation.

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Requirements

• Technical Skills:

  • Strong expertise in Linux, Windows Server, and VMware ESXi administration and security hardening.
  • Advanced scripting and automation skills using Python and Bash.
  • Experience with API integration and workflow automation between enterprise technologies.
  • Strong knowledge of TCP/IP networking, firewalls, VPN technologies, and network security principles.
  • Hands-on experience with AWS and Azure cloud platforms and related security practices.
  • Experience with vulnerability management tools such as Rapid7 Nexpose and Nessus.
  • Experience with SIEM platforms, preferably Splunk.
  • Experience with ticketing and ITSM platforms such as ServiceNow and Jira.
  • Knowledge of cybersecurity operations, cyber threat intelligence, and vulnerability management best practices.
  • Familiarity with containerized environments and DevSecOps practices, including Docker and Kubernetes.
  • Experience with messaging and event-driven platforms such as Apache Kafka, RabbitMQ, AWS SQS, or Google Pub/Sub.
  • Knowledge of emerging threats, attack vectors, and modern hybrid cloud security challenges.
  • Experience in Java, GoLang, or Rust is considered an asset.

• Profile:

  • Bachelor's or Master's degree in Computer Science, Cybersecurity, Information Technology, or a related field.
  • 5+ years of experience in cybersecurity, infrastructure engineering, vulnerability management, or a similar role.
  • Strong analytical and problem-solving skills with the ability to manage complex technical environments.
  • Ability to work effectively with cross-functional teams and multiple stakeholders.
  • Excellent communication, reporting, and documentation skills.
  • Proactive mindset with a strong focus on automation and continuous improvement.
  • Fluency in English is required; French is considered a strong asset.

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We Offer

• An attractive salary package.
• A good work-life balance environment.
• The opportunity to work with cutting-edge cybersecurity and cloud technologies.
• Challenging projects in a dynamic and innovative environment.
• Tailor-made training courses and professional development opportunities.
• A friendly and collaborative workplace.

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About the Company

If you wish to integrate a dynamic structure on a human scale while working with the latest technologies, don't wait anymore and join Cronos!