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Security Engineer, Detection and Response

Notion· Security
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Hybrid (Dublin, Ireland)€75k - €142kFull-timePosted 3w ago

About the role

Hands-on Detection Engineer role focused on building and operating detection and response capabilities across Notion’s cloud-native environment, with emphasis on high-signal detections, platform tooling, incident response, and scaling of detection and response engineering.

Responsibilities

  • Build and tune high-signal detections across cloud, identity, endpoint, and SaaS environments, with review and mentorship from senior teammates as you ramp up.
  • Contribute to the detection platform, including rule lifecycle management, tuning, measurement, and rollout safety.
  • Build tooling and automation that speed up triage, enrichment, investigation, and detection authoring, including LLM-based workflows where useful.
  • Turn threat intelligence and adversary TTPs into detections, telemetry requirements, and response improvements.
  • Take part in investigations, incident response, and postmortems, and help turn what we learn into lasting fixes.
  • Help define and track metrics such as coverage, MTTD, and alert quality.
  • Join a shared on-call rotation for incident response.

Qualifications

  • 3+ years of experience in detection engineering, security operations, incident response, threat hunting, or a closely related security or software engineering role.
  • Have written or tuned detections that run in production, and care about signal quality and cutting noise.
  • Working knowledge of at least one detection or query language (Sigma, KQL, SPL, YARA-L, EQL, or Panther), or strong SQL or Python skills and the drive to learn one quickly.
  • An understanding of how attackers operate (e.g., MITRE ATT&CK), and the ability to use it to decide what to detect.
  • Hands-on experience with AWS, GCP, or Azure, ideally including identity and access logs.
  • Have used SIEM, EDR, or SOAR tools in any size of environment.
  • Write clearly in runbooks, design docs, and incident notes, and can own well-scoped projects end to end.

Skills

Required:Detection engineeringDetection/query languagesThreat modeling / ATT&CKCloud platformsSIEM/EDR/SOARDocumentation / runbooks
Last updated Sep 30, 2026. Interested? Apply on the company site.
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