Lead Detection & Response Platform Engineer

CoStar Group

Confirmed live yesterday High trust
Hybrid

Quick summary

Work type
Hybrid
Location
Arlington, VARichmond, VA
Salary
$155,000–$245,000 / yr
Employment
Full-time
Posted
7 days ago
Freshness
Confirmed live yesterday

Market check

Salary context

Above market

How this pay compares to similar roles

Similar $185k
This role $200k
$112k $259k
below market most similar roles pay here above market

This role pays more than 73% of similar roles. Most pay $167,500–$201,600 — the blue band above. At the midpoint, this role pays about $200k versus about $185k for comparable roles.

Based on 240 similar postings.

Employer

About CoStar Group

CoStar Group is the leading provider of commercial real estate information, analytics, and online marketplaces, including CoStar, Apartments.com, and LoopNet platforms. Industry: Commercial Real Estate Data & Analytics

CoStar Group currently has 59 open roles on FindRole.

Listed pay typically runs $133,000–$190,000 across 59 roles with salary data.

Most-posted roles

View all roles at CoStar Group

At a glance

TL;DR · Lead Detection & Response Platform Engineer

The Lead Detection & Response Platform Engineer joins the security team to own and engineer the platform used to triage alerts and respond to incidents. This role involves defining standards for alert classification, enrichment, and escalation while building these processes into automated SOAR playbooks, enrichment pipelines, and case-management workflows. The engineer will manage the SIEM, XDR, and SOAR stack as a platform, utilizing version control, peer review, and automated deployment. Key responsibilities include coordinating incident response, mentoring staff, and mapping coverage using the MITRE ATT&CK framework. Required technical skills include Python or PowerShell, REST APIs, JSON, and SIEM query languages like KQL or SPL. The role addresses the business problem of standardizing security operations and closing data-quality gaps across identity, endpoint, cloud, and network telemetry.

What you'll do

  • Define and standardize alert triage processes for classification, prioritization, investigation, and escalation.
  • Build SOAR playbooks, enrichment pipelines, and case-management workflows to automate repetitive analyst tasks.
  • Manage the SIEM, XDR, and SOAR platforms using version control, peer review, and automated deployment.
  • Measure and analyze triage performance metrics to identify areas for tuning, automation, or retirement.
  • Coordinate enterprise-wide incident response and lead significant incidents with technical, business, and legal stakeholders.
  • Maintain the Incident Response Plan and conduct quarterly tabletop exercises to update playbooks and automation.
  • Mentor analysts and engineers in process design, investigation methods, and automation development.
  • Connect telemetry across identity, endpoint, cloud, and network tools through API integrations.

What we're looking for

  • Bachelor’s Degree from an accredited, not for profit, in person, university or college.
  • 8+ years in IT, including 5+ years in cybersecurity and at least 3 years in security operations, detection engineering, or incident response.
  • One or more security certifications such as GIAC GCIH, GCDA, CISSP, CISM, or ECIH.
  • Experience designing and running alert triage or incident response processes for an enterprise security operations team.
  • Experience building and maintaining production security automation in a SOAR or workflow platform using playbooks and API integrations.
  • Proficiency in Python or PowerShell, REST APIs, JSON, and at least one SIEM query language like KQL or SPL.
  • Experience managing security content or configuration with Git and a change-control process.
  • Experience investigating across identity (Active Directory / Entra ID), endpoint, cloud, and email telemetry.

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