Security Detection Engineer III

About this role

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Skills you'll use

What you'll do

• Develop and maintain custom detections using Detection-as-Code practices, including version control, peer review, testing, and CI/CD deployment workflows.
• Analyze and improve detection coverage by mapping telemetry and detections to adversary behaviors and the MITRE ATT&CK framework, identifying gaps and prioritizing enhancements.
• Partner with Incident Response, Threat Intelligence, Logging Engineering, and security platform teams to translate emerging threats, investigations, and telemetry into actionable detection content.
• Validate and tune detections through adversary emulation, atomic testing, purple-team exercises, and production feedback to improve signal quality and reduce false positives.
• Automate and optimize detection engineering workflows, alert enrichment processes, and operational activities to improve efficiency and scalability.
• Support onboarding of new log sources and security telemetry by collaborating with engineering and infrastructure teams to establish detection coverage across new environments and technologies.
• Create and maintain detection documentation, runbooks, coverage assessments, and technical standards while participating in an engineering on-call rotation.
• Help define detection strategy for AI and agentic systems (prompt injection, tool and function abuse, agent identity and credential misuse, data exfiltration via model outputs), and explore using AI to accelerate detection engineering workflows.
• Required Skills / Qualifications
• Bachelor's degree in Information Security, Computer Science, Engineering, or related field, or equivalent practical experience.

Who can apply

• Bachelor's degree in Information Security, Computer Science, Engineering, or related field, or equivalent practical experience.
• 5+ years of experience in cybersecurity, security engineering, detection engineering, security operations, threat hunting, or a related discipline.
• Experience developing, tuning, or maintaining detections within a SIEM, EDR, log analytics, or security monitoring platform.
• Experience with scripting, automation, or data analysis using Python, PowerShell, SQL, KQL, SPL, or similar technologies.
• Strong understanding of attacker techniques, detection methodologies, and frameworks such as MITRE ATT&CK.
• Strong analytical, problem-solving, communication, and cross-functional collaboration skills.

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