Sr. Systems Engineer - Herndon, VA - TS/CI with Poly

Overview

On Site
USD 119,850.00 - 162,150.00 per year
Full Time

Skills

Security Clearance
IT Infrastructure
Systems Design
Microsoft Exchange
Messaging
Reporting
System Security
DoD
System Monitoring
Vulnerability Management
Servers
Database
Collaboration
Continuous Monitoring
Mentorship
System Integration Testing
Continuous Integration
Computer Science
Systems Engineering
Network
Data Flow
Encryption
Operating Systems
Linux
Microsoft Windows
Hardening
Patch Management
Vulnerability Assessment
Intrusion Detection
Incident Management
Conflict Resolution
Problem Solving
Communication
Scripting
Python
Windows PowerShell
Bash
Cyber Security
Virtualization
IC
Internal Communications
Integrated Circuit
Security Controls
Telecommuting
Taxes
Apache Flex
Military
Insurance
Professional Services
Innovation
Artificial Intelligence
Machine Learning (ML)
Cloud Computing
Application Development

Job Details

Type of Requisition:
Pipeline

Clearance Level Must Currently Possess:
Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:
Top Secret SCI + Polygraph

Public Trust/Other Required:
None

Job Family:
IT Infrastructure and Operations

Job Qualifications:

Skills:
Complex Systems Design, Engineering, Systems Design
Certifications:
None
Experience:
5 + years of related experience
ship Required:
Yes

Job Description:

GDIT is seeking a highly experienced Senior Systems Engineer with a strong cybersecurity background to support, secure, and maintain classified systems. The position focuses on sustaining Cross-Domain Solutions (CDS) critical to secure information exchange across multiple classification levels. The ideal candidate will combine systems engineering expertise with cybersecurity best practices in classified environments to ensure system integrity, availability, and confidentiality.

  • Lead cybersecurity engineering efforts to protect CDS and encrypted messaging/reporting platforms in a classified environment.
  • Implement and maintain system security controls in accordance with IC and DoD cybersecurity policies.
  • Support daily cybersecurity operations including system monitoring, incident response, vulnerability management, and remediation activities.
  • Configure, maintain, and secure system components such as servers, databases, encryption devices, and secure communication channels.
  • Ensure secure configuration, patch management, and hardening of operating systems (Linux/Windows) and application layers.
  • Collaborate closely with cybersecurity teams, network engineers, ISSOs, and vendors to resolve security incidents and implement mitigation strategies.
  • Support Authority to Operate (ATO) renewals, and assist with continuous monitoring requirements.
  • Mentor and guide junior engineers on cybersecurity practices, secure system operation, and classified environment protocols.
  • Participate in system integration, testing, and validation to ensure cybersecurity requirements are met.
  • Support mission partners by providing cybersecurity expertise during operational and emergency situations.

Required Qualifications:
  • Active TS/SCI with CI Poly
  • Bachelor's degree in Cybersecurity, Systems Engineering, Computer Science, or related technical field (or equivalent experience).
  • 8+ years of experience in systems engineering
  • Demonstrated experience supporting or securing Cross-Domain Solutions (CDS)
  • Deep understanding of classified network architectures, secure data flows, and encryption technologies.
  • Strong proficiency with operating systems (Linux and Windows), system hardening, patch management, and security configuration.
  • Proven skills in vulnerability assessment tools, intrusion detection/prevention systems, and incident response.
  • Familiarity with IC cybersecurity policies and directives
  • Excellent troubleshooting and problem-solving skills in complex, multi-domain environments.
  • Strong communication skills with the ability to document technical findings clearly and coordinate with multidisciplinary teams.

Preferred Qualifications:
  • Experience with system automation, scripting (Python, PowerShell, Bash), and cybersecurity tools.
  • Familiarity with classified cloud environments (C2S, SC2S) and virtualization technologies.
  • Prior experience working in a SCIF and adhering to IC physical and operational security controls.

GDIT IS YOUR PLACE:
401K with company match
Comprehensive health and wellness packages
Internal mobility team dedicated to helping you own your career
Professional growth opportunities including paid education and certifications
Cutting-edge technology you can learn from
Rest and recharge with paid vacation and holidays.

The likely salary range for this position is $119,850 - $162,150. 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 Herndon

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.

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.