Type of Requisition:
Regular

Clearance Level Must Currently Possess:
Top Secret/SCI

Clearance Level Must Be Able to Obtain:
Top Secret/SCI

Public Trust/Other Required:
None

Job Family:
Cyber and IT Risk Management

Job Qualifications:

Skills:
Active Directory (AD), Redhat Linux Server, Splunk Administration, Tenable Security Center
Certifications:
None
Experience:
10 + years of related experience
US Citizenship Required:
Yes

Job Description:

CYBERSECURITY ENGINEER SR PRINCIPAL

Advance your career while impacting our national security in cyber as a Cybersecurity Engineer Sr Principal at GDIT. Here, technologists have many paths to grow a meaningful career supporting cyber missions and operations across the federal government.

MEANINGFUL WORK AND PERSONAL IMPACT

As a Cybersecurity Engineer Sr Principal, the work you'll do at GDIT will be impactful to the mission of our customer's classified commercial cloud environment. You will play a crucial role in engineering and operating security controls for a classified secure workstation enclave, ensuring continuous monitoring, and compliance for mission-critical systems.

• Support and lead configuration, hardening, and updates of Linux operating systems, directly contributing to the secure operation of the enclave.
• Collaborate with enclave engineers, system administrators, and vendors to administer and maintain core security applications (SIEM, vulnerability scanning, endpoint protection, insider threat tooling) that safeguard the environment.
• Drive continuous monitoring and incident response activities by validating telemetry, triaging alerts, investigating incidents, and supporting RMF-aligned vulnerability management, endpoint security, and auditing.
• Utilize Red Hat/Linux, Splunk, Tenable, Trellix, Teramind, and Microsoft Active Directory/Group Policy to implement and validate security controls, maintain visibility, and provide actionable insights into the enclave's security posture.
• Configure, harden, and update Linux operating systems within the secure enclave.
• Administer and monitor core security tools (Splunk SIEM, Tenable, Trellix, Teramind), ensuring telemetry, policies, and integrations function as intended.
• Triage and investigate security alerts and incidents in alignment with the Incident Response Plan.
• Oversee vulnerability and STIG scanning (host inventory, scan policies, and results) and coordinate remediation with the engineering team.
• Ensure complete endpoint visibility and policy enforcement across hosts and insider threat tooling.
• Support RMF Continuous Monitoring activities, including vulnerability management, endpoint security, auditing, and security alert monitoring.
• Contribute to security documentation, control implementation statements, assessment artifacts, and POA&M mitigation activities.

WHAT YOU'LL NEED TO SUCCEED

Bring your cyber expertise and drive for innovation to GDIT. The Cybersecurity Engineer Sr Principal must have:
• Education: Bachelor of Arts/Bachelor of Science
• Experience: 10+ years of related experience
• Technical skills:

• Hands-on experience with Red Hat operating system and other Linux distributions
• Hands-on engineering experience administering and maintaining security operations using Splunk (SIEM), Tenable (vulnerability management), and Trellix (endpoint security)
• Hands-on experience with Teramind for insider threat monitoring
• Understanding of Microsoft Active Directory and implementing controls via Group Policy
• Knowledge of the complete NIST SP 800 series (especially 800-37, 800-53, 800-30) and risk management principles

• Security clearance level: Active Top Secret
• Role requirements:

• Onsite -McLean, VA
• Must be DoD 8140 / 8570.01-M compliant

The likely salary range for this position is $164,382 - $210,450. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:
40

Travel Required:
10-25%

Telecommuting Options:
Onsite

Work Location:
USA VA McLean

Additional Work Locations:

Total Rewards at GDIT:
Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process:
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.