Senior Information Security Analyst - Security Operations

Description

Job Summary: Magalu Cloud is seeking a Senior Information Security Analyst to perform advanced SOC operations, focusing on incident analysis, tool tuning, and continuous improvement of detection processes. Key Highlights: 1. Advanced SOC Operations (Level 3) 2. Analysis of escalated incidents and tool tuning 3. Single point of contact for resolving complex incidents Magalu Cloud is the cloud computing services platform created by the largest and most innovative retail company in Brazil, Magazine Luiza. Founded in 2020, our clear purpose is: To boost Brazil's competitiveness through technology. We offer hyperscale cloud services with local engineering, a simplified interface, market-competitive pricing in Brazilian Reais (BRL), and Portuguese-language support — making cloud more accessible to everyone. We are looking for a **Senior Information Security Analyst \- Security Operations** responsible for advanced SOC operations (Level 3\), performing analysis of escalated incidents, tool tuning, and continuous improvement of detection processes. This role serves as the focal point for resolving incidents that fall outside standard playbooks. **Responsibilities:** * Triage and respond to high-complexity incidents escalated from previous tiers. * Perform fine-tuning of rules in Wazuh and filters in Grafana to reduce false positives. * Create and maintain incident response playbooks within DFIR IRIS. * Develop Python/Bash scripts for evidence collection or containment actions. * Manage integration of tickets and workflows in GLPI with security tools. * Support vulnerability management and propose infrastructure-level remediations. **Mandatory Requirements:** * Proven experience administering and operating Wazuh and Elastic Stack. * Practical experience with DFIR IRIS and incident lifecycle management. * Knowledge of building advanced dashboards in Grafana (Loki/Prometheus/Elastic). * Scripting in Python for security task automation. * In-depth knowledge of operating systems (Linux/Windows Internals) and networking (TCP/IP, traffic analysis). * Solid understanding of the MITRE ATT\&CK framework. **Desirable Requirements:** * Degree in Information Technology or Networking. * Desired certifications: CompTIA CySA\+, BTL1 (Blue Team Level 1\), or CEH. * Experience in SOC or defensive security. At **Magalu Cloud**, we believe in people who build together and foster an environment of continuous learning and innovation. If this resonates with you, we want to meet you! We value autonomy, accountability, and agile delivery, within a collaborative and non-bureaucratic environment. Our pace is fast, yet we balance quality and planning. We also highly value diversity and inclusion across all our positions. At Magalu Cloud, everyone is welcome — regardless of gender, race, sexual orientation, disability, or any other characteristic. Does this match your profile? Join our team!