Cybersecurity Systems Engineer Principal

As a GDIT Cybersecurity Systems Engineer, the work you’ll do will be impactful to the mission of our Federal, Intelligence and Defense customers. You will bring strong hands-on experience in vulnerability management and server security operations. This role will be responsible for performing vulnerability scanning, analyzing risk exposures, managing remediation workflows, and applying security patches and updates across enterprise servers and infrastructure. You will have a solid technical foundation in systems administration, continuous monitoring, combined with strong knowledge of security best practices, vulnerability assessment tools, and patch management process to help our federal customers build and maintain Zero Trust architecture.

As a Cybersecurity Systems Engineer, the work you’ll do at GDIT will be impactful to the mission of DoD mission Zero Trust strategy.

Responsibilities:

• Perform regular vulnerability scans across enterprise servers, applications, and infrastructure using industry-standard tools (e.g., Tenable Nessus, Qualys, Rapid7).

• Analyze scan results, assess risk severity, validate findings, and prioritize remediation activities in coordination with system owners and engineering teams.

• Develop, maintain, and operate a vulnerability management program, including tracking, reporting, and remediation metrics for leadership.

• Apply and validate security patches, OS updates, and software upgrades on enterprise servers (Windows and Linux).

• Coordinate with infrastructure, application, and DevOps teams to ensure timely remediation of vulnerabilities while minimizing operational impact.

• Support compliance with security frameworks and standards (e.g., NIST 800-te, CIS Benchmarks, DISA STIG)

• Develop and maintain patch baselines, golden images, and configuration standards to reduce vulnerability recurrence.

• Document vulnerability management process, create runbooks, and contribute to continuous improvement initiatives.

• Participate in security audits, assessments, and reporting activities.

Required Qualifications:

• Bachelor's Degree (additional experience may be considered in lieu of a degree).

• Experience: 8+ years of related experience.

• Active SECRET clearance.

• Ability to resolve complex IT challenges.

• Proven track record of excellence in IT security, vulnerability management, or system administration.

• Hands-on experience with vulnerability scanning tools.

• Experience with patch management and tools/solutions.

• Strong understanding of Windows and Linux server administration.

• Knowledge of CVSS scoring, CVE tracking, and vulnerability prioritization.

• Knowledge of networking concepts, firewalls, and enterprise security practices.

• Strong problems solving skills.

• Excellent communications and documentation skills.

Preferred Qualifications:

• Experience working with Federal and Department of Defense customers desired.

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.

• Growth: AI-powered career tool that identifies career steps and learning opportunities

• Support: An internal mobility team focused on helping you achieve your career goals

• Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

• Flexibility: Full-flex work week to own your priorities at work and at home

• Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY
Explore a career in cyber at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters.

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