Senior Cyber Defense & Incident Response Analyst

General Dynamics Information Technology, Inc.; United States; Remote; USD 90,000 - 130,000; Full time

Job summary

General Dynamics Information Technology, Inc. is seeking a cybersecurity professional to investigate, analyze, and respond to incidents within enterprise networks using Microsoft Defender XDR and related tools.

You will coordinate with stakeholders, implement security controls, and document findings while aligning with NIST and RMF guidance; 5+ years of experience required. Certifications such as Security+, CySA+, CISSP or equivalent are preferred to demonstrate expertise in defending complex

Qualifications

• 5+ years of experience in cybersecurity, information security, security operations or incident response.
• Experience investigating incidents across cloud, endpoint, identity, email and collaboration environments.
• Strong knowledge of security frameworks and compliance standards (NIST, RMF, CIS, ISO 27001).

Responsibilities

• Investigates, analyzes, and responds to cybersecurity incidents within an enterprise environment.
• Monitors security alerts and events using Microsoft Defender XDR and related tools.
• Coordinates incident response with technical and business stakeholders and documents findings.
• Evaluates and maintains cybersecurity policies, controls, and procedures aligned with regulatory requirements.
• Performs risk assessments, compliance testing, and threat investigations; supports data governance controls.
• May coach less-experienced professionals and contribute to improving detection capabilities.

Skills

Threat hunting

Incident response

Log analysis

Detection engineering

Security frameworks

Education

Security certifications (Security+, CySA+, CISSP, GIAC, SC-200/SC-300/SC-400)

Tools

Microsoft Defender XDR

Defender for Endpoint

Defender for Identity

Defender for Office 365

Microsoft Purview

Data Loss Prevention (DLP)

Insider Risk Management

Information Protection

Sensitivity Labels

Insider Risk Management

Microsoft Sentinel

NIST RMF

FedRAMP / CIS Controls / ISO 27001

Job description

General Dynamics Information Technology, Inc. is seeking a cybersecurity professional to investigate, analyze, and respond to incidents within enterprise networks using Microsoft Defender XDR and related tools.

You will coordinate with stakeholders, implement security controls, and document findings while aligning with NIST and RMF guidance; 5+ years of experience required. Certifications such as Security+, CySA+, CISSP or equivalent are preferred to demonstrate expertise in defending complex