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Flexport

Senior Security Engineer, Detection & Response

Flexport

. Build and tune detections across endpoint, identity, SaaS, and cloud .

Posted 9/17/2026full-timeSan Francisco • California • United StatesSenior💰 $138,196 - $252,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in detection engineering and incident response, with a strong focus on building and tuning detections across various environments. Proficient in programming, automation, and utilizing modern SIEM tools to enhance security operations and threat hunting capabilities.

Highest-signal resume keywords
Detection EngineeringIncident ResponsePython ProgrammingCI/CD PracticesSIEM Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Detection TuningAutomation Code WritingTelemetry DefinitionThreat HuntingMITRE ATT&CK FrameworkProduction-Grade CodeFraud Detection PatternsKubernetes TelemetryPeer ReviewVersion Control
Soft Skills
CollaborationCritical EvaluationCommunication
Tools & Technologies
PantherElasticSplunkCloud Infrastructure
Industry Keywords
Incident ResponseSecurity IncidentsDetection PipelineFinancial Crime DetectionVisibility Gaps

Tech Stack

Tools & technologies
CloudKubernetesPythonSplunkGo

About the role

Key responsibilities & impact
  • Build and tune detections across endpoint, identity, SaaS, and cloud
  • Version-control, peer-review, and ship detections through CI/CD practices
  • Track detection quality using MITRE ATT&CK coverage, precision, and time-to-detect
  • Own incident response by triaging, containing, remediating, and writing retrospectives
  • Build automation to reduce investigation toil
  • Partner with the US-based team across time zones
  • Define telemetry requirements for new systems before they ship
  • Work with infrastructure and product teams to close visibility gaps
  • Proactively threat hunt across the estate
  • Convert threat-hunting hypotheses into new detections or documented coverage

Requirements

What you’ll need
  • Typically 5–8 years of experience in detection engineering, incident response, or threat hunting
  • Hands-on experience writing and tuning detections
  • Proficiency in at least one programming language, such as Python or Go
  • Comfort writing production-grade detection and automation code
  • Experience with a modern SIEM or detection pipeline, such as Panther, Elastic, or Splunk
  • Practical incident response experience, including leading or playing a major role in triaging and closing real security incidents
  • Experience treating detections as code with CI/CD, peer review, and staged rollout
  • Experience defining telemetry contracts for systems before they ship
  • Track record of critically evaluating and verifying AI-assisted work
  • Familiarity with cloud-native and Kubernetes telemetry
  • Experience with fraud or financial-crime detection patterns

Benefits

Comp & perks
  • Relocation support available for the right candidate
  • Latest hardware and software, including frontier AI models on day one
  • Bonus
  • Equity
  • Medical benefits
  • Dental benefits
  • Flexible time off
  • Follow-the-sun pager rotation so nobody is paged at 3am local