Colliers is a leading diversified professional services and investment management company. With operations in 68 countries, our 22,000 enterprising people work collaboratively to provide expert advice to maximize the potential of property and real assets to accelerate the success of our clients, our investors and our people.

We are at the forefront of the real estate industry, leading the way and backed by an exceptional record of success. We are building for our future – and yours.

We strive to build our business at a competitive pace by augmenting internal growth with smart strategic acquisitions that increase market share, expand service offerings and extend our geographic reach for the benefit of our clients and shareholders.

For more than 29 years, Colliers has created value for shareholders that has resulted in superior returns and industry growth. Our people also own significant equity in our business, which brings pride of ownership to everything we do. We are passionate, take personal responsibility and always do what's right for our clients, people and communities.

Administer Firewall & WAF Cyber Controls:

- Assist in configuring, operating, and maintaining Next-Generation Firewalls (NGFW) and Web Application Firewalls (WAF).This includes Palo, Cisco, Checkpoints

- Implement, modify, and maintain firewall rules and policies under the supervision of senior engineers.

Monitor Endpoint Security

- Support the administration and health-checks of endpoint controls including Microsoft Defender for Endpoint (MDE) and Cisco Umbrella.

Perform Threat Detection & Log Analysis:

- Monitor firewall logs, SIEM dashboards, and network traffic to identify potential security threats. Respond to security alerts, triage security tickets, and escalate complex issues appropriately.

Operations & Troubleshooting:

- Assist in troubleshooting firewall, proxy, and intrusion prevention connectivity issues.

- Generate and maintain activity reports and documentation on firewall operations

Collaboration & Growth:





- Work closely with infrastructure and application specialists across integral teams.

- Aapply technical cyber risk frameworks (including MITRE ATT&CK; and NIST CSF) as directed by senior staff.

Qualifications Your Experience. You are a growing professional with a strong foundational understanding of network security, IT administration, and firewall concepts.

- 1-3 years of experience in Systems Administration, network administration, or a cybersecurity/firewall administrator role.

- Working knowledge of networking protocols (TCP/IP, DNS, DHCP, VLANs, VPNs) and basic firewall architecture.

- Exposure to or some experience configuring and monitoring enterprise firewalls (e.g., Palo Alto Networks, CheckPoint, Fortinet, Cisco).

- Familiarity with Microsoft Windows-based server and endpoint platforms, as well as basic Azure AD, GCP and related security systems

- Exposure to SIEM platforms and log monitoring principles.

- Strong attention to detail, troubleshooting skills, and the ability to assess follow security protocols and procedures.

- You hold a relevant university degree or technical diploma. Entry-level industry certifications (such as CompTIA Security+, Network+, Cisco CCNA, or vendor-specific certs like NSE or Palo or MS Security operations or Google Cloud Platform (GCP) security) are highly regarded.

You are enterprising.

You look for opportunities to improve your skills and the IT services around you. You are eager to learn about cyber risk and threat modelling frameworks and want to understand how they protect business outcomes at Colliers.

You collaborate.

You cultivate your networks inside Colliers, building strong partnerships with your engineering mentors and global IT teams. You thrive in environments that require careful teamwork and effective processes.

You invest in relationships.

You communicate clearly with team members and users to understand connectivity or access requirements, ensuring they are addressed securely and in a timely manner.

You do what’s right.

You are a trusted junior partner to the business on cyber and technology. You act with

📌 Global Cyber Controls Administrator (Madrid)
🏢 Colliers
📍 Madrid