Cyber Security Analyst (US Time Zone)
Remote · São Paulo, São Paulo, Brazil
Job Summary
Cyber Security Analyst/Researcher to investigate advanced and persistent threats, analyze customers’ web traffic with Elasticsearch and BigQuery to detect unidentified threats and reduce false positives, design and enhance detection mechanisms, provide real-time incident responses, and produce clear incident reports. Responsibilities include collaborating with R&D, implementing automation projects to improve team efficiency, and supporting enterprise-scale clients in bot defense and invalid traffic detection. Requires 4+ years in cybersecurity or fraud data analysis, strong SQL, web technologies understanding, SIEM experience (Elastic Stack preferred), customer-facing communication, and English proficiency. This role operates on a shift-based schedule including weekends and offers remote work from São Paulo, Brazil.
Required Qualifications
- 4+ years of experience in data analysis in cybersecurity or fraud detection domains
- Strong SQL skills: complex queries, aggregations, GROUP BY, ORDER BY, filters, window functions (e.g., RANK()), CTEs, and subqueries
- Technical understanding of web technologies and client–server architecture (APIs, HTTP, basic HTML/JavaScript)
- Experience with SIEM systems (Elastic Stack preferred)
- Strong troubleshooting and problem-solving skills
- Experience in customer support with direct client communication
- Strong English communication skills
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