[Remote] Cybersecurity Engineer – Email & Endpoint Security

Note: The job is a remote job and is open to candidates in USA. Nightwing is a company that provides advanced cyber, data operations, and intelligence mission support services. They are seeking a Cybersecurity Engineer focused on email and endpoint security, responsible for implementing and improving security measures across various platforms.

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 Skills
• Experience with Proofpoint, arenaflex 365/O365, arenaflex Defender, and CrowdStrike
• Ability to plan, implement, configure, upgrade, and monitor security controls protecting enterprise networks, endpoints, and collaboration/email platforms
• Experience in engineering and maintaining email security capabilities including anti-phishing, malware detonation/analysis, impersonation protection, URL/attachment defense, and policy tuning
• Knowledge of mail flow and authentication improvements (e.g., SPF/DKIM/DMARC alignment as applicable)
• Experience in engineering and maintaining endpoint security (EDR/NGAV) capabilities including prevention policies, detection tuning, containment workflows, device isolation/quarantine procedures, and fleet-wide deployment/health monitoring
• Ability to assess vulnerabilities and security risks across email and endpoint ecosystems
• Experience in proposing, implementing, and validating risk mitigation strategies (hardening, policy updates, rule tuning, and control coverage improvements)
• Knowledge of appropriate security controls and governance to safeguard digital files and critical infrastructure, including configuration baselines, access controls, and monitoring/telemetry standards
• Experience in responding to security incidents (phishing, account compromise, malware, ransomware, endpoint outbreaks) by coordinating triage, containment, eradication, recovery, and lessons learned
• Ability to integrate and optimize tooling outputs (alerts, logs, and threat intelligence) across platforms to improve detection fidelity, reduce false positives, and enhance operational response
• Experience in supporting 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 Company Overview
• We are the intelligence services company that continually redefines the edge of the possible to keep advancing our national security interests. It was founded in undefined, and is headquartered in , with a workforce of 1001-5000 employees. Its website is Apply tot his job

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