About Alejandro
Information Security professional with 20+ years of hands-on experience across cybersecurity, cloud security, incident response, penetration testing, security audits, and AI-driven automation.
I help organizations in regulated industries — fintech, electoral technology, critical infrastructure, and banking — design, operate, automate, and mature their security programs. My work combines deep technical security expertise with practical AI adoption, agentic workflows, SOAR, and automation to improve detection, response, vulnerability management, reporting, and operational efficiency.
I design and execute penetration testing programs, ethical hacking engagements based on OWASP and OSSTMM, Azure and AWS cloud security assessments, vulnerability lifecycle programs, and audit-ready documentation for ISO 27001 and PCI DSS. I have assessed critical national infrastructure, including digital voting systems.
On the detection and response side, I build production-grade Microsoft Sentinel environments: KQL detection rules, threat hunting queries, analytics content, incident response workflows, SOAR playbooks, and escalation processes. I automate security operations using Azure Logic Apps, n8n, Python, PowerShell, APIs, Microsoft Graph, Defender XDR, Entra ID, and custom integrations.
A major focus of my work is applying AI and agentic automation to cybersecurity operations: alert enrichment, incident triage, asset and identity correlation, vulnerability prioritization, evidence collection, reporting, and analyst support.
I also design security frameworks across Azure — Sentinel, Defender XDR, Entra ID, Conditional Access, Intune, Purview, Key Vault, AKS — and AWS — GuardDuty, CloudTrail, Security Hub, Inspector, IAM, WAF, Config, EventBridge. I cover Zero Trust, telemetry pipelines, email security, MDM, PKI, awareness, policies, and standards.
Certifications:CISM · AWS Security Specialty · AWS Solutions Architect · ISO 27001 Lead Implementer · PMP · CCSP · ISC2 CC · ITIL
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- DmarcdefenseCo-FounderTECHFebruary 2019 - Today (7 years and 5 months)Barcelona, SpainAs the founder at DmarcGuardian I specialize in providing managed DMARC services to help organizations improve their email security and deliverability. With a strong background in cloud services and a passion for innovative cybersecurity solutions, I've dedicated my time to empowering businesses to protect their digital assets and reputation.At DmarcGuardian, we offer a comprehensive suite of managed DMARC services, including policy setup, monitoring, reporting, and ongoing optimization. Our team of dedicated professionals works tirelessly to ensure that our clients' email infrastructure is resistant to phishing attacks, spoofing, and other malicious activities.In my role, I oversee the development of cutting-edge features and tools to enhance our service offerings while also leading our managed services team to deliver exceptional support and results for our clients. My expertise in email security, DMARC, and features development, combined with my commitment to customer success, enables me to drive DmarcGuardian toward becoming a leading provider of managed DMARC services.Specialties: DMARC, Email Security, Managed Services, Software Development, Cybersecurity, Phishing Prevention, Email Deliverability, and Team Leadership.
- Cybersec CorpFounderJune 2017 - Today (9 years and 1 month)Cyber security services:- Read team exercises- Penetration test- Phishing exercise- Forensic analysis- Cloud security
- Bigfinite Inc.Cyber Security ManagerAugust 2018 - July 2019 (11 months)Barcelona, Spain
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Education
- Master en Dirección Estratégica en Tecnologías de Información, Tecnología de la informaciónUniversidad Europea del Atlántico2016Master en Dirección Estratégica en Tecnologías de Información, Tecnología de la información
- Computer science, Network and securityUniversidad Central de Venezuela2005Computer science, Network and security
Certifications
- AWS Certified Security – SpecialtyAWS2022
- Certified Information Security Manager - CISMISACA2012