Cyber Security Analyst (US Team)

Location: Remote from São Paulo, Brazil; shift-based schedule including weekends.

Company

Cybersecurity solutions provider focused on bot defense and anti-malvertising technologies for the AdTech industry, protecting organizations, users, SSPs, DSPs, agencies, and publishers.

What you will do

• Investigate advanced and persistent attacks using data analysis and data science tools.
• Analyze customer web traffic, logs, and request patterns with Elasticsearch and BigQuery to identify threats and reduce false positives.
• Research, design, and continuously improve threat detection and bot mitigation mechanisms.
• Provide real-time technical support and incident responses to global customers.
• Write clear incident reports and collaborate with R&D and Research teams.
• Design and implement internal automation projects to improve team efficiency.

Requirements

• At least 3 years of data analysis experience in cybersecurity or fraud detection, including work with logs and dashboards.
• Strong SQL skills, including complex queries, aggregations, grouping, filtering, window functions, CTEs, and subqueries.
• Technical understanding of web technologies and client-server architecture, including APIs, HTTP, and basic HTML/JavaScript.
• Experience analyzing web traffic, HTTP requests, logs, and traffic patterns.
• Experience with SIEM systems.
• Strong troubleshooting, problem-solving, customer support, and direct client communication skills.
• Strong English communication skills required.

Nice to have

• Experience as a Cybersecurity Analyst or Researcher in threat detection and response, web application security, bot management, or fraud detection.
• Experience with research methodologies such as hypothesis testing, verification, and research planning.
• Python and JavaScript knowledge.
• Experience with BigQuery or Snowflake.
• Experience building dashboards with BI tools such as Snowflake, Looker, Kibana, or JSM.
• Experience with the Elastic Stack.

Culture & Benefits

• Full-time remote work from Brazil.
• Direct collaboration with customers and cross-functional R&D and Research teams.
• Work in a real-time, enterprise-scale threat detection and bot mitigation project.
• Shift-based schedule, including weekends.