Freelancer profile translated to English.
Back to original languageAbout Secops Advisor
Blue Team Specialist with real-world experience in enterprise environments. Contained an active Sodinokibi ransomware attack using emergency GPO — zero downtime, zero business loss.
Offering audits, hardening, SIEM/EDR implementation, and incident response.
Spanish
Native or bilingual
Portuguese
Native or bilingual
Remote only
Primarily works remotely
Experience
- AISInfraestructure Engineer L3TECHApril 2019 - Today (7 years and 2 months)Madrid, SpainDefensive cybersecurity specialist (Blue Team) with hands-on experience in operating own SOC, responding to real incidents, and hardening critical infrastructures.Real case documented:Containment of active Sodinokibi ransomware attack on a +100 server infrastructure using emergency GPO — limited exfiltration to 8% of total data, zero downtime, and zero business impact. Intervention recognized by management in real-time.Services I offer:
- Audit and hardening of Windows Server, Linux, and Active Directory systems (MITRE ATT&CK, CIS Benchmarks, NIST)
- SIEM (Wazuh, Graylog) and EDR (Microsoft Defender, CrowdStrike, Sophos) implementation and configuration
- Incident response and post-attack recovery
- Network hardening: FortiGate, Palo Alto, pfSense, WAF
- Cloud and M365 security: Defender for Cloud, Entra ID, Intune, Purview DLP
- Vulnerability management: OpenVAS, Qualys, Defender Vulnerability Management
My approach: early detection, rapid response, and zero-trust. I don't just identify problems — I solve them with concrete countermeasures and actionable documentation.Available for one-off projects or ongoing collaboration. - HIASupport EngineerTECHJune 2022 - February 2026 (3 years and 8 months)Madrid, SpainSystem Administrator with experience in complex enterprise environments, critical infrastructures, and advanced support for users and IT teams.Services I offer:
- Email Security & M365: Management and email protection with Mimecast (CrowdStrike integration), multi-tenant administration of SharePoint, Exchange Online, and Azure
- Virtualization & VDI: Infrastructure management with System Center VMM, Citrix environments, virtual desktops (VDI), and ThinClients on Windows Server 2016/2022
- Identity Management & PKI: Active Directory administration and Public Key Infrastructure (PKI) maintenance
- IT Support & Monitoring: Incident resolution and advanced remote support with ControlUp Management
My approach: stable, secure, and well-documented infrastructures. Available for one-off projects or ongoing collaboration. - Aiuken CyberSeguridadSecurity AnalystTECHSeptember 2017 - March 2019 (1 year and 6 months)Madrid, Spain
- SIEM & Audit Administration: Security event management and monitoring using LogRhythm and FortiSIEM.
- Perimeter Security & WAF: Firewall administration (Palo Alto, Fortinet, Watchguard), Bluecoat Proxy, and Incapsula WAF.
- Endpoint Protection & Encryption: Deployment and administration of Sophos Intercept X (Linux/Windows servers) and Device Encryption, as well as data encryption management with Thales Vormetric.
- Identity Management (IAM): Privileged Access Management (PAM) using CyberArk.
- Security Operations: Technical auditing and continuous administration of the corporate cybersecurity infrastructure.
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Education
- Fortinet Institute – NSE 2Fortinet2020NSE 2 Network Security Associate
- New Horizons20696 Administering System Center Configuration Manager and Intune2018