Senior Threat Detection Engineer (IR & Detection)

Cribl; Columbia (SC); Remote; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Short-term disability

Life insurance

Paid time off

Fertility treatment benefit

401(k)

Equity

Job summary

Cribl is hiring a hands-on Senior Security Engineer to join Team Alpine, Cribl's internal security team, focusing on detection as code, incident response rotation, and protecting Cribl’s telemetry platform. You will design, build, and tune detections (KQL), map to MITRE ATT&CK, and own the health of log pipelines.

You will collaborate with Product Security, IT, and Legal, mentor teammates, and help scale detection across cloud environments (AWS/GCP/Azure).

Qualifications

• 5+ years in security operations, with significant hands-on time in detection engineering, threat hunting, or incident response.
• Experience writing and maintaining detections as code in a modern SIEM.
• Strong Python skills and comfort with Git-based workflows, code review, and CI/CD.
• Strong in KQL for writing detection queries.
• Working knowledge of MITRE ATT&CK and how to use it for coverage analysis, not just labeling.
• Experience investigating incidents in cloud (AWS, GCP, and/or Azure), SaaS, and identity providers.
• Hands-on experience with log pipelines: getting data in, parsing it, and fixing it when it breaks.
• Clear writing for both technical and non-technical audiences: incident summaries, runbooks, detection docs.
• Uses AI as a routine part of engineering work, with concrete examples of how it has changed how you build, test, or investigate.
• Bonus: experience with Cribl Stream or other telemetry pipeline tools
• Bonus: Sigma rules, adversary emulation (Atomic Red Team, Caldera, or similar), or purple teaming
• Bonus: experience building agentic or AI-assisted workflows for security operations
• Bonus: certifications such as GCIH, GCDA, or equivalent experience

Responsibilities

• Design, build, test, and tune detections as code (KQL) through a GitOps workflow: issue, pull request, unit and back-testing, then automated deployment
• Map detections to MITRE ATT&CK, find coverage gaps, and decide where to invest next based on our threat model
• Review new community and vendor rule releases, such as Sigma, and decide what to adopt, adapt, or skip
• Cut alert noise by tuning, retiring rules that no longer earn their place, and tracking detection quality metrics
• Plan and run hypothesis-driven hunts across cloud, SaaS, identity, endpoint, and corporate infrastructure telemetry
• Use adversary emulation to generate test events for detections that have nothing to fire on yet
• Turn hunt findings into durable detections, documentation, and backlog items
• Take part in the IR rotation: triage, scope, contain, and investigate security incidents from first alert to closure
• Run retrospectives and turn the lessons into new detections, playbook updates, and fixes to visibility gaps
• Write and maintain runbooks so others on the team can respond consistently
• Assist in ownership of the health of security log flow: onboard new sources, maintain parsing and normalization, and monitor for dropped, delayed, or malformed data
• Assist and Build and maintain data pipelines with Cribl Stream to route, enrich, and reduce telemetry before it reaches the SIEM
• Maintain the CI/CD and automation behind the detection program, including GitHub Actions, SIEM API integrations, and AI-assisted gap analysis and PR review
• Work independently, and design the processes, standards, and tools that help others work well
• Mentor teammates through code review, pairing, and clear documentation
• Work with IT, Infrastructure, Engineering, and GRC to close visibility gaps and improve detection coverage

Skills

Detection engineering

Incident response

Threat hunting

Python

KQL

Git workflows

Communication

Tools

Cribl Stream

Sigma rules

GitHub Actions

Job description

Cribl is hiring a hands-on Senior Security Engineer to join Team Alpine, Cribl's internal security team, focusing on detection as code, incident response rotation, and protecting Cribl’s telemetry platform. You will design, build, and tune detections (KQL), map to MITRE ATT&CK, and own the health of log pipelines.

You will collaborate with Product Security, IT, and Legal, mentor teammates, and help scale detection across cloud environments (AWS/GCP/Azure).