Senior Information Security Analyst (remote in Brazil)

Please submit your resume in English.

To learn more about our team and office culture in São Paulo, Brazil, visit the following links. 
Careers Page: https://www.knowbe4.com/careers/locations/sao-paulo
Glassdoor: https://www.glassdoor.com/Location/KnowBe4-S%C3%A3o-Paulo-Location-EI_IE969384.0,7_IL[…]M_-C1lsxoZq7Cx8IriVE8MkrzuTmnJzqego77RAWZz9sqGt_55BflwYKpQeg
LinkedIn: https://www.linkedin.com/company/knowbe4/life/brazil/

KnowBe4 is seeking a Senior Information Security Analyst in Brazil to join our Security team! In this role, your primary focus will be proactive threat hunting, internal vulnerability assessment/penetration testing, and building custom security automations to ensure enterprise data and infrastructure remain safe

As our infrastructure evolves, you will play a critical role in bridging an internal coverage gap in threat hunting and penetration testing, solving root-cause security challenges, and collaborating with and mentoring global SOC team members across the US, UK, and Brazil.

Responsibilities:

• Threat Hunting & Penetration Testing: Conduct proactive threat hunting across cloud and hybrid environments, identify log coverage gaps, and perform internal vulnerability assessments and penetration testing to recommend system hardening and patching.
• Security Automation & Tooling: Build internal security tools and automated testing workflows using Python or Bash to parse complex logs, streamline forensic data collection, and integrate security APIs.
• Cloud Security & Incident Response: Conduct security reviews and audits of AWS cloud environments, act as lead investigator for complex security incidents, and optimize ElasticSearch SIEM alerts to minimize false positives.
• Strategic Security Operations: Move beyond routine alert triage to solve root-cause security problems, improving overall infrastructure resilience and security posture.
• SOC Leadership & Mentorship: Serve as a subject matter expert for junior and mid-level analysts, developing training materials, leading tabletop exercises, and providing technical guidance to elevate overall team readiness.

Requirements:

• Experience in Security Operations (SOC), Information Security, or a related technical role.
• SOC & Threat Hunting: Proven track record in active threat hunting, incident investigation, and building or maturing SOC operational components rather than solely triaging alerts
• Scripting & Automation: Strong hands-on proficiency in Python or Bash for log parsing, forensic data collection, and custom security tool development
• Cloud & Linux Fluency: Hands-on experience securing cloud infrastructure (AWS as the primary focus) and navigating Linux command-line interfaces
• SIEM Expertise: In-depth knowledge and practical experience configuring and customizing ElasticSearch SIEM for log collection and alert tuning
• Language: Fluency in technical English (written and spoken) to collaborate smoothly across global teams
• Cultural Fit: Personable, open communication style with authentic engagement, willingness to share personal context, and a collaborative spirit

• Experience participating in Capture The Flag (CTF) competitions, ethical hacking, or red/blue team testing.
• Personal GitHub repositories or open-source security projects.
• Exposure to multi-cloud environments (Azure or GCP)
• Relevant industry certifications or a degree in Information Security / Computer Science.