Systems Engineer Senior- TS/SCI w/poly
GDIT· enterprise· Defense IT· Sep 18, 2026 · 1mo ago
Herndon, VA
In office
Full-time
Senior
$111K–$150K
5+ years exp
Job description
Type of Requisition:
Regular
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:
Requirements Management, Systems Design Engineering, Systems Development Certifications:
None Experience:
5 + years of related experience US Citizenship Required:
Yes
Job Description:
SYSTEMS ENGINEER SENIOR
Are you ready to be a part of an elite team at GDIT, working on a large-scale National Intelligence program? This is an incredible opportunity to immerse yourself in an environment that fuses innovation, speed, and security to safeguard our Nation.
At GDIT, you ll thrive in a dynamic and collaborative setting, where your technical skills will be both challenged and expanded. Come join us and contribute to a mission that truly matters, while advancing your career alongside some of the brightest minds in the industry.
What You’ll Achieve
Analyze mission and product requirements to design and document system solutions using engineering principles and technical design tools (e.g., models, diagrams, and specifications);
Evaluate complex problems by reviewing related information, comparing alternative approaches, and selecting options based on cost/benefit and operational impact;
Assesses how changes in conditions, operations, and environments affect system outcomes; applies deductive reasoning and structured pattern/sequence analysis to develop sound recommendations and support implementation of effective solutions.
Experience Requirements
Systems Engineer Senior - BA/BS or equivalent, 5 years of experience in Systems Engineering
Systems Engineer Senior Principal - BA/BS or equivalent, 10 years of experience in Systems Engineering
CLEARANCE: Active TS/SCI clearance with poly
US citizenship required
LOCATION: Onsite
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 ***remove if ineligible***
● Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.
The likely salary range for this position is $111,155 - $150,385. 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:
Less than 10%
T elecommuting 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.
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.
About Our Work:
We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 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 mission-ready capabilities in AI, cloud, cyber and software development.
Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc .
Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans
Application prep
Use the role’s language and application details while tailoring your materials.
Keywords to mirror
ai
- Platform
- workday
- Effort
- long
Benefits
Benefits detected in the listing.
Dental
Vision
401k
401(K)
Paid Time Off
Wellness