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Senior Detection Engineer

1 week, 2 days ago
Costa Rica
Full-time
Senior
Security Engineer
Cybersecurity
AWS Elasticsearch Hadoop Python SIEM Splunk SQL YAML
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Zscaler

Zscaler

Zscaler is a cybersecurity pioneer providing industry-leading CASB and SASE solutions, revolutionizing internet security with a cloud-based platform that protects users worldwide.

Internet Software & Services
1K-5K
Founded 2007
View All Jobs 124

Description

  • Develop next-generation detection logic for threat hunters using Python, SQL, AWS services, YAML-based logic, and SIGMA-like rules.
  • Advance threat detection and hunting capabilities for Zscaler Threat Hunting.
  • Write, update, and maintain detections and playbooks independently.
  • Leverage data platforms such as Hadoop and Athena to support scalability and engineering maintenance.
  • Develop and manage detection infrastructure through scripting and automation.
  • Validate detection logic, perform root cause analysis of detection failures, and recommend platform improvements.
  • Translate threat tactics, techniques, and procedures into actionable detection logic aligned to MITRE ATT&CK.
  • Work flexible hours, including weekend night shifts and on-call support.
  • Collaborate within the Threat Hunting team under the Senior Manager of Threat Hunting.

Requirements

  • Hands-on experience developing and implementing detection rules in a SIEM tool such as Splunk, Microsoft Sentinel, or ElasticSearch.
  • Familiarity with the MITRE ATT&CK framework and translating TTPs into actionable detections.
  • Scripting and automation experience using Python.
  • Experience writing and optimizing IDS/IPS and YARA signatures.
  • Strong reporting and analytical skills.
  • Ability to validate detection logic, perform root cause analysis, and recommend platform improvements.
  • Proven experience in one or more of: detection engineering, threat hunting, security operations, malware analysis, blue teaming, or network defence.
  • Bachelor’s or graduate degree in Computer Science, Engineering, or a related field, or equivalent security industry experience (preferred).
  • Significant experience as a Senior Detection Engineer, including leading complex detection strategies and mentoring junior team members (preferred).
  • Experience in network-based threat detection and signature development, such as Snort/Suricata rules (preferred).

Benefits

  • Various health plans.
  • Time off plans for vacation and sick time.
  • Parental leave options.
  • Retirement options.
  • Education reimbursement.
  • In-office perks.
  • Inclusive benefits for employees and their families across different life stages.

Interested in this position?

Apply directly on the company website

Apply Now

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