Sr. Cybersecurity Engineer with Security Clearance

Cornerstone Defense LLC; Reston (VA); On-site; USD 140,000 - 180,000; Full time

Job summary

Cornerstone Defense is seeking a Sr. Cybersecurity Engineer in Reston, VA to safeguard sensitive information and design, implement, and maintain our cybersecurity infrastructure.

This role requires an Active TS/SCI clearance with CI poly and a strong background in current threats, vulnerabilities, and proactive security controls. The ideal candidate will contribute to cross-functional teams, ensure security across development lifecycles, and stay current with evolving security trends while

Qualifications

• 7+ years of experience as a cybersecurity engineer with expertise in implementing security controls and continuous monitoring for compliance.
• Strong experience collecting and querying logs in Splunk to identify anomalies and risks.
• Experience implementing controls per NIST SP 800-53, RMF, ICD 503, FISMA, FedRAMP.
• Experience with cloud, container, and DevSecOps in IL5 to IL6+ environments.
• Proficient in incident response, security incident handling, and forensic analysis.

Responsibilities

• Design, implement, and manage security solutions (firewalls, IDS/IPS, endpoint protection, encryption).
• Conduct regular security assessments to identify vulnerabilities.
• Develop and implement incident response plans for security breaches.
• Collaborate with IT, software development, and compliance to enforce security policies.
• Monitor traffic, logs, and alerts to detect and respond to incidents.
• Maintain documentation and produce detailed security reports.

Skills

Security governance

log analysis

incident response

NIST RMF / FedRAMP

DevSecOps

Cloud security IL5-IL6+

forensic analysis

communication

security controls design

risk assessment

Tools

Splunk

Fortify

Acunetix

Prisma Cloud

Job description

Sr. Cybersecurity Engineer Reston, VA Active TS/SCI with poly As a Sr. Cybersecurity Engineer, you'll play a pivotal role in safeguarding our organizations digital assets and sensitive information. The ideal candidate is a dedicated professional with a strong background in cybersecurity, a deep understanding of current threats and vulnerabilities, and the ability to implement robust security measures. As a Cybersecurity Engineer, you will contribute to the design, implementation, and maintenance of our cybersecurity infrastructure while staying abreast of emerging trends in the field Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense. Job Responsibilities:

• Design, implement, and manage security solutions, including firewalls, intrusion detection/prevention systems, endpoint protection, and encryption mechanisms to ensure the organizations networks and systems remain secure.
• Conduct regular security assessments to identify vulnerabilities and weaknesses in systems, networks, and applications.
• Develop and implement incident response plans to effectively address security breaches, incidents, and breaches.
• Collaborate with cross-functional teams to establish and enforce security policies, standards, and procedures.
• Monitor network traffic, system logs, and security alerts to detect and respond to potential security incidents
• Analyze and investigate anomalies and security breaches, taking appropriate actions to mitigate risks.
• Work closely with cross-functional teams, including IT, software development, and compliance, to integrate security into all phases of the development lifecycle and ensure a comprehensive approach to cybersecurity.
• Maintain thorough and accurate documentation of security processes, procedures, and configurations. Prepare detailed reports on security findings, incidents, and actions taken. Required Skills:
• 7+ years of experience as a cybersecurity engineer with a specialization in designing and building implementations of required security controls; and implementing continuous monitoring and auditing of solutions for compliance with security controls.
• Strong skills in specifying and implementing log collection into tools such as Splunk, and performing querying and analysis of aggregated logs to identify security-relevant anomalies or risks
• Strong experience in implementing security controls from government regulatory frameworks and security standards (e.g., NIST SP 800-53, RMF, ICD 503, FISMA, FedRAMP).
• Experience with implementing controls for cloud, container, and DevSecOps services and solutions within IL5 to IL6+ environments.
• Strong understanding of network protocols, operating systems, and infrastructure components.
• Proficiency in incident response, security incident handling, and forensic analysis techniques.
• Experience with security tools such as Fortify, Acunetix, and Prisma Cloud
• Effective communication skills, with the ability to convey complex technical concepts to both technical and non-technical stakeholders.
• CISSP or equivalent certification to support DoD 8140 requirements
• Active TS//SCI clearance with CI poly