✦ Luna Orbit — Cybersecurity

Senior Security Engineer - Detection and Response

at Klaviyo

📍 Boston, MA Onsite Posted March 12, 2026
Type Full-Time
Experience senior
Exp. Years 5+ years
Education Not specified
Category Cybersecurity

Klaviyo seeks a senior security engineer to develop and maintain detection and response systems, improve security observability, and automate threat response operations.

  • Build detection systems
  • Respond to security alerts
  • Develop AI security tools
  • Onboard security logging data
  • Conduct threat hunts

The role involves building scalable detection and response systems using SIEM, data lakes, and machine learning models, with proficiency in Python and Go, focusing on security automation and incident response.

The ideal candidate is a senior cybersecurity engineer with 5+ years of experience in detection, response, and security operations. They possess strong skills in SIEM, data analysis, and automation, with a focus on building scalable security observability systems.

5+ years of experience in softwaresecurityand/or data engineeringProficient in Python or GoExperience with centralized loggingdata lakesand SIEM solutionsExperience with detection and response or incident responseBuild and maintain detection and response systems
AI-first security systemsML deploymentThreat huntingSecurity automationOn-call rotations
SIEMData LakesGitGitHubCI/CD
Security EngineerDetection and ResponseSIEMData LakesSecurity LoggingThreat ResponseML ModelsDetection EngineeringIncident ResponseThreat HuntingAutomationSecurity ObservabilityPythonGo
PythonGoMachine LearningSIEMData LakesSecurity LoggingDetection EngineeringThreat ResponseSecurity ObservabilityML ModelsDetection and Response SystemsSecurity OperationsIncident ResponseThreat HuntingAutomation
CommunicationTeamworkProblem-solvingSelf-managementContinuous learning
Industry SaaS
Job Function Develop and maintain security detection and response systems
Security EngineerDetection and ResponseSIEMData LakesSecurity LoggingThreat ResponseML ModelsDetection EngineeringIncident ResponseThreat HuntingAutomationSecurity ObservabilityPythonGoSecurity Operations

Lack of experience with SIEM or detection systems, Less than 5 years of relevant experience, No experience with security automation, Not proficient in Python or Go

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