Cybersecurity Analyst Specialist
Summary
Second-level cybersecurity analyst at Acens (a Telefónica Tech subsidiary) who monitors, triages, and investigates security alerts and incidents across client environments and internal platforms, administering Fortinet firewalls and Microsoft Defender XDR/Sentinel, with 24x7 non-onsite on-call rotation.
This job advert was originally written in Spanish.
Requirements
What we're looking for
Second-level Cybersecurity Analyst for the operation, analysis, investigation, and response to security incidents in client environments and internal platforms. Requires solid knowledge in operational cybersecurity, networks, firewalls, EDR/XDR, alert analysis, event correlation, and incident management.
Pay & benefits
What you'll get
- Permanent contract and stability
- Hybrid remote working model
- Fixed salary + variable pay based on objectives
- Private medical insurance and life insurance
- Restaurant tickets
- Flexible compensation system (childcare tickets)
- Intensive summer working day if the project allows it
The role
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July 2, 2026
acens seeks Specialist Technician (Cybersecurity Analyst)
acens is looking for a second-level Cybersecurity Analyst Technician for the operation, analysis, investigation, and response to security incidents in client environments and internal platforms.
If you are interested, write to us attaching your CV and indicating in the email subject the position you are applying for. Thank you very much!
[email protected]
What you'll do
Monitoring, analysis, and triage of security alerts from Fortinet platforms, Microsoft Defender, and other security sources
- Investigation of second-level security incidents, analyzing events, logs, indicators of compromise, endpoint behavior, network traffic, and user activity
- Operational administration of Fortinet solutions: VPN, firewall policies, security profiles, logs, alerts, and events
- Operation of Microsoft Defender solutions: Hunting, triage, tuning, and policy deployment
- Collaboration with the different operations and infrastructure areas
- Scheduled maintenance tasks during low-impact hours, generally outside working hours
- Non-onsite on-call shifts to cover 24×7 service
What do we value?
- At least 3 years of experience in similar positions
- Deep knowledge of defensive cybersecurity and security operations
- Experience in analysis, triage, and investigation of security alerts
- Knowledge of Windows and Linux operating systems from a security standpoint (processes, services, logs, users, permissions, connections, etc.)
- Network knowledge: TCP/IP, VLAN, Routing, NAT, VPN, and common Internet protocols (HTTP, SMTP, FTP, SSH)
- Experience in firewall administration and operation, preferably Fortinet FortiGate
- Experience in managing Microsoft Defender XDR.
- Experience with Microsoft Sentinel, Log Analytics, Azure Monitor, or similar SIEM solutions
- Knowledge of M365 Security (EntraID, users, groups, Conditional Access...)
- Advanced network knowledge: VLAN, routing, Firewall, VPN, service load balancing
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About Acens
Acens is a Spanish cloud hosting and IT services provider offering cloud infrastructure, managed hosting, cybersecurity, and connectivity solutions to businesses. As a subsidiary of Telefónica Tech, the company leverages the scale and resources of one of the world's largest telecommunications groups while maintaining a specialized focus on the Spanish market. Acens operates data centers and provides a full suite of managed IT services, including cloud computing, cybersecurity, and network solutions, catering primarily to SMEs and larger enterprises across Spain.
With its headquarters in Madrid, Acens has a strong presence across Spain, with offices and technical teams in key cities such as Zaragoza and Galicia. The company is known for its customer-centric approach and technical expertise, making it a relevant employer for IT professionals, particularly those with skills in cybersecurity, cloud infrastructure, and account management. For international candidates, Acens offers the opportunity to work within a Spanish company backed by a global telecom leader, providing exposure to enterprise-level projects and a collaborative work environment.
- Industry
- Cloud Hosting
- Founded
- 1998
- Employees
- 500–1,000
- Headquarters
- Madrid, Spain
- In Spain
- Madrid, Zaragoza, Galicia
Good to know if you are moving
- Acens is a subsidiary of Telefónica, one of the world's largest telecommunications companies, offering stability and access to a large corporate network.
- The company is headquartered in Madrid, a major European tech hub with a growing international community.
- Acens provides services in Spanish, so a good level of Spanish is typically required for most roles, though technical positions may be more flexible.
- The company has a strong focus on cybersecurity and cloud technologies, making it a good fit for IT professionals looking to specialize in these areas.
- As a Spanish company, Acens offers a traditional Spanish work culture with a focus on work-life balance and local holidays.