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Cyber Security Analyst
Location
Brazil
Posted
3 days ago
Salary
0
Seniority
Senior
Job Description
Cyber Security Analyst
Sigma Software Group
• Investigate advanced and persistent attacks using data analysis and data science tools • Analyze customers' web traffic to detect unidentified threats and reduce false positives using Elasticsearch and BigQuery • Research, design, and continuously enhance detection mechanisms to stay ahead of evolving threats • Provide real-time technical support to global customers, delivering professional and timely incident responses • Produce clear, insightful incident reports • Collaborate cross-functionally with R&D and Research teams to optimize the company's detection and mitigation capabilities • Design, plan, and implement internal automation projects to improve team efficiency • Work in a shift-based schedule, including weekends
Job Requirements
- At least 4 years of experience in data analysis in cybersecurity or fraud detection domains, including experience with logs and dashboards
- 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 (experience with the Elastic Stack would be an advantage)
- Strong troubleshooting and problem-solving skills
- Experience in customer support, including direct communication with clients; professionalism and politeness are essential
- Strong English communication skills
- WOULD BE A PLUS: Experience in a Cybersecurity Analyst/Researcher role, ideally supporting external customers in threat detection and response
- Experience in web security and security research: web application security, bot management, fraud detection
- Experience with research methodologies (hypothesis testing, verification and research plan)
- Python and JavaScript knowledge
- Experience with BigQuery/Snowflake
- Proficiency in building dashboards using BI tools (Snowflake, Looker, Kibana, JSM)
Benefits
- Proactive communicator who keeps stakeholders informed without being prompted
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