Information Systems Security Engineer Tysons, VA TS/SCI with Polygraph
Overview: We are seeking a highly skilled Information Systems Security Engineer (ISSE) to join our team. In this role, you will design, implement, and maintain enterprise security solutions to protect mission-critical systems, networks, and data. You will collaborate with cross-functional teams to ensure compliance with government security standards while proactively addressing vulnerabilities and threats.
Company Benefits: Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources. Key Responsibilities
Design, deploy, and manage security solutions including firewalls, IDS/IPS, endpoint protection, and encryption mechanisms.
Conduct regular security assessments to identify and remediate weaknesses in systems, networks, and applications.
Develop and implement incident response plans; investigate anomalies and breaches, and take swift action to mitigate risks.
Collaborate with IT, development, and compliance teams to establish security policies, procedures, and best practices aligned with frameworks such as NIST SP 800-53, RMF, ICD 503, FISMA, and FedRAMP.
Monitor network traffic, system logs, and alerts to detect potential threats; utilize tools like Splunk for log aggregation and analysis.
Integrate security controls into all phases of system and software development, including cloud, containerized, and DevSecOps environments (IL5–IL6+).
Maintain detailed documentation of security configurations, processes, and incident reports.
Required Qualifications
Education: Bachelor’s degree in Computer Science, Information Security, or related field
Experience: 7+ years in cybersecurity engineering, including:
