Nightwing · 15 hours ago
Cybersecurity Engineer – Email & Endpoint Security
Virginia, United States
Full-time
Onsite
Mid LevelNightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services. They are seeking a Cybersecurity Engineer focused on email security and endpoint protection, responsible for delivering engineering services, implementing security controls, and responding to security incidents.
Information Technology & Services
Responsibilities
Plan, implement, configure, upgrade, and monitor security controls protecting enterprise networks, endpoints, and collaboration/email platforms (Proofpoint, O365, MS Defender, CrowdStrike)
Engineer and maintain email security capabilities including anti-phishing, malware detonation/analysis, impersonation protection, URL/attachment defense, and policy tuning; support improvements to mail flow and authentication (e.g., SPF/DKIM/DMARC alignment as applicable)
Engineer and maintain endpoint security (EDR/NGAV) capabilities including prevention policies, detection tuning, containment workflows, device isolation/quarantine procedures, and fleet-wide deployment/health monitoring
Assess vulnerabilities and security risks across email and endpoint ecosystems; propose, implement, and validate risk mitigation strategies (hardening, policy updates, rule tuning, and control coverage improvements)
Ensure appropriate security controls and governance are in place to safeguard digital files and critical infrastructure, including configuration baselines, access controls, and monitoring/telemetry standards
Respond to security incidents (phishing, account compromise, malware, ransomware, endpoint outbreaks) by coordinating triage, containment, eradication, recovery, and lessons learned—leveraging Defender and CrowdStrike response actions and Proofpoint intelligence/workflows
Integrate and optimize tooling outputs (alerts, logs, and threat intelligence) across platforms to improve detection fidelity, reduce false positives, and enhance operational response (including workflow automation where applicable)
Support year-round tracking, reporting, and guidance for POA&Ms and CMMC assessments, including control implementation evidence, remediation planning, and ongoing control effectiveness validation for email and endpoint security domains
Qualification
Required
Experience in delivering cybersecurity engineering services with a focus on email security and endpoint protection
Proficiency in planning, implementing, configuring, upgrading, and monitoring security controls protecting enterprise networks, endpoints, and collaboration/email platforms (Proofpoint, O365, MS Defender, CrowdStrike)
Ability to engineer and maintain email security capabilities including anti-phishing, malware detonation/analysis, impersonation protection, URL/attachment defense, and policy tuning
Experience in supporting improvements to mail flow and authentication (e.g., SPF/DKIM/DMARC alignment as applicable)
Ability to engineer and maintain endpoint security (EDR/NGAV) capabilities including prevention policies, detection tuning, containment workflows, device isolation/quarantine procedures, and fleet-wide deployment/health monitoring
Experience in assessing vulnerabilities and security risks across email and endpoint ecosystems
Ability to propose, implement, and validate risk mitigation strategies (hardening, policy updates, rule tuning, and control coverage improvements)
Experience in ensuring appropriate security controls and governance are in place to safeguard digital files and critical infrastructure
Ability to respond to security incidents (phishing, account compromise, malware, ransomware, endpoint outbreaks) by coordinating triage, containment, eradication, recovery, and lessons learned
Experience in integrating and optimizing tooling outputs (alerts, logs, and threat intelligence) across platforms to improve detection fidelity, reduce false positives, and enhance operational response
Ability to support year-round tracking, reporting, and guidance for POA&Ms and CMMC assessments
Company
Nightwing
We are the intelligence services company that continually redefines the edge of the possible to keep advancing our national security interests.
1001-5000 employees
Funding
Current Stage
Late StageCompany data provided by crunchbase