Senior Cyber Defense Analyst - Blue Team

SENTINEL GROUP LLC; Chantilly (VA); On-site; USD 120,000 - 165,000; Full time

Job summary

SENTINEL GROUP LLC is seeking a Senior Cybersecurity Blue Team Analyst to serve as a technical authority for defensive operations across complex environments in Chantilly, VA. You will lead assessments of networks, cloud, and applications, and guide remediation strategies for mission-critical systems.

The role requires 7+ years in cybersecurity, expertise in SIEM/EDR, vulnerability management, and threat hunting, with a TS clearance.

Qualifications

• 7+ years of experience in cybersecurity or related field.
• Experience leading assessments across diverse and complex enterprise IT environments.
• Expert knowledge of enterprise networks, operating systems, cloud, virtualization, IAM, and security technologies.
• Experience with SIEM, EDR/XDR, vulnerability management, threat hunting, incident response, and security analytics.
• Top Secret clearance; counterintelligence polygraph desired.

Responsibilities

• Lead comprehensive cybersecurity assessments across complex, heterogeneous enterprise IT environments.
• Assess security architecture, controls, configurations, operational practices, and telemetry across on-premises, cloud, hybrid, and distributed environments.
• Evaluate security of enterprise networks, Windows and Linux infrastructure, endpoints, apps, databases, virtualization, cloud services, IAM, and security-management platforms.
• Lead vulnerability assessments, configuration reviews, security-control assessments, threat hunts, and defensive cyber assessments.
• Analyze complex security events and telemetry to identify sophisticated attacks and adversary behaviors.
• Correlate information across SIEM, EDR/XDR, network, identity, cloud, application, vulnerability-management, and infrastructure-management platforms.
• Lead investigations of significant cybersecurity incidents and provide technical direction for containment, eradication, recovery, and lessons learned.
• Track emerging vulnerabilities and attacker TTPs to improve defensive capabilities.

Job description

SENTINEL GROUP LLC is seeking a Senior Cybersecurity Blue Team Analyst to serve as a technical authority for defensive operations across complex environments in Chantilly, VA. You will lead assessments of networks, cloud, and applications, and guide remediation strategies for mission-critical systems.

The role requires 7+ years in cybersecurity, expertise in SIEM/EDR, vulnerability management, and threat hunting, with a TS clearance.