Open to opportunities

Fernando Alencar

@fernandoalencar

Message

I build cloud threat detection and incident response across AWS, Azure, and GCP environments.

Brazil

Message

What I'm looking for

I'm seeking immediate B2B cybersecurity work in remote, hybrid, on-site, or travel-ready environments, focused on cloud security, detection engineering, threat hunting, and incident response. I'm available full-time or part-time with flexible overlap across BRT, WEST, and CET.

At Clavis Segurança da Informação, I lead detection engineering for a multi-client SOC supporting 150+ enterprise customers. I maintain and tune thousands of Elasticsearch and OpenSearch detection rules, helping reduce false positives and speed analyst triage.

I led a year-long Microsoft Sentinel SOC project for cloud threat detection and multi-tenant security architecture, contributing to a multi-million-dollar contract delivery. I hunt threats across AWS, Azure, and GCP telemetry, map adversary behavior through MITRE ATT&CK, and turn findings into practical defensive controls with SOC, CSIRT, and engineering teams.

Previously at NTT DATA Business Solutions Brasil, I implemented ISO 27001 and ISO 27017 controls to achieve full organizational compliance certification and engineered AWS security controls spanning GuardDuty, Security Hub, IAM, CloudTrail, WAF, Shield, and KMS. I also automate detection and security workflows with Python, PowerShell, Bash, Git, and CI/CD pipelines.

Experience

Work history, roles, and key accomplishments

Current

Detection Engineer

Current

Clavis Segurança da Informação

Apr 2024 - Present (2 years 4 months)

Lead detection engineering operations across a multi-client SOC environment supporting 150+ enterprise customers, minimizing attacker dwell time. Led a year-long Microsoft Sentinel SOC project focused on cloud threat detection and multi-tenant security architecture.