ClearanceJobs
  • Candidates
  • Employers
  • Hiring Companies
  • News & Career Advice
  • Login
  • Register now
Experience
City
State
Clearance
Posted Within
Employer Name
Country
Job Category
Job Type
Polygraph
Remote/Hybrid

Top Secret / SCI Clearance Jobs

Top Secret/SCI

Viewing 1 - 20 of 16,221

Top Secret / SCI Jobs requiring security clearance

Show:
Sort by:

DevSecOps & Site Reliability Engineer

New
ClearanceJobs Workforce Solutions
Apply today! Be one of the first candidates to apply for maximum exposure.
Posted today
5+ yrs exp
TS/SCI
CI Polygraph

On behalf of our Federal Contracting client, ClearanceJobs Talent Solutions Team is seeking a DevSecOps & Site Reliability Engineer to keep our client’s production deployed applications reliable, obse...

user avatar

Cloud Systems Administrator [$222k/yr+] TS/SCI-FS Poly

New
SYSTOLIC
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI
Full Scope Polygraph

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Supports IT system implementation, troubleshooting, and maintenance. • Ma...

user avatar

Java DevOps Engineer [$306k/yr+] TS/SCI-FS Poly

New
SYSTOLIC
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI
Full Scope Polygraph

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Develop, maintain, and enhance complex software systems, leveraging expertise in...

user avatar

Spring Boot Engineer [$306k/yr+] TS/SCI-FS Poly

New
SYSTOLIC
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI
Full Scope Polygraph

Candidates must already possess an active Top Secret/SCI w/ Full Scope Polygraph to be considered. Summary: • Develop and maintain complex software systems, including algorithm development a...

user avatar

Software Engineer [$271k/yr+]

New
SYSTOLIC
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI
None

A current U.S. Government Security clearance is not required at start, but will be processed for a Secret level clearance; U.S. citizenship required. Can also consider candidates with a current Secret...

user avatar

Software Engineer [$271k/yr+]

New
SYSTOLIC
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI
None

A current U.S. Government Security clearance is not required at start, but will be processed for a Secret level clearance; U.S. citizenship required. Can also consider candidates with a current Secret...

user avatar

Insider Threat Investigative Analyst

New
Deck Prism LLC
Apply today! Be one of the first candidates to apply for maximum exposure.
Chantilly, VA(On-Site/Office)
Posted today
5+ yrs exp
TS/SCI

Insider Threat Investigative Analyst (U) Experience: Individual must possess eight (8) or more years demonstrated experience conducting all-source analysis or investigations in support of governmen...

D

Data Center Technician, Infraops AG

New
Amazon
Apply today! Be one of the first candidates to apply for maximum exposure.
Aurora, CO(On-Site/Office)
Posted today
TS/SCI
Polygraph

DescriptionApplication deadline: May 24, 2026The Infrastructure Operations team is looking for cleared Data Center Technicians to join our expanding Infrastructure Operations team. Data Center Technic...

user avatar

Software Developer (Systems Software) - Senior

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Chantilly, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description Software Developer (Systems Software) - Senior...

user avatar

Site Lead / Social Scientist

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Dahlgren, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description What You Will Be Doing:Leading a multidisciplinary technical team conducting research and development of advanced graph-based models and analytic methodologies.Designing, developing, a...

user avatar

Systems Architect

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Reston, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description As a Systems Architect, you will be responsible for providing operational testing and recommendations for continuous improvement of equipment and software for collection and exploitati...

user avatar

Systems Administrator

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Herndon, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description Serve as a POC to the Sponsor regarding all operations, O&M activities required within the scope of effort, provide Tier 1, 2, and 3 support to developers and customers, including on c...

user avatar

Systems Engineer - SME

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Herndon, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description As a Systems Engineer, you will be responsible for working constructively with the security, operations, and development teams to ensure mission continuity in support of the mission! ...

user avatar

Applications Developer

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Chantilly, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description As an Applications Developer, you will be responsible for providing support to manage the accessibility program for the office in support of the mission!Click APPLY to be contacted abo...

user avatar

Software Engineer - SME

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Herndon, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description As a Software Engineer, you will be responsible for developing new automation capabilities that utilize infrastructure as code best practices and establishes a continuous integration/c...

user avatar

Mid - Hybrid Cloud Platform Engineer (PaaS)

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Springfield, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description What You Will Be Doing:O&M of existing Red Hat OpenShift environment across multiple security domains in both Cloud and datacenter (vSphere) environments.Supporting OpenShift operators...

user avatar

IT Engineer

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Arnold, MO(On-Site/Office)
Posted today
TS/SCI
Not Specified

Job Description Our Product Support team is looking for an IT Engineer to join our team, in this role you will be responsible for providing software, platform, security, and system integration for new...

user avatar

SME - Staff Operations Officer

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Fort Belvoir, VA(On-Site/Office)
Posted today
TS/SCI
Not Specified

Job Description Crimson Phoenix seeks exceptionally qualified Staff Operations Officer (SOO) / Desk Officer to support USSOCOM. A Staff Operations Officer (SOO) serves as primary interface between the...

user avatar

Systems Administrator- Senior

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Herndon, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description We are actively seeking Systems Administrators with a minimum of 11 years' experience, and a range of skill levels from basic to advanced....

user avatar

Systems Engineer

New
Crimson Phoenix
Apply today! Be one of the first candidates to apply for maximum exposure.
Chantilly, VA(On-Site/Office)
Posted today
TS/SCI
Full Scope Polygraph

Job Description The Sponsor conducts technical assessments and provides technical guidance on use of various enterprise and mission enabling technologies supporting the Sponsor's Information Technolog...

user avatar
ClearanceJobs
  • About Us
  • Support
  • Browse Jobs
  • Security Clearance FAQs
  • AgileATS
  • FedWork
  • Blog
Download on the App StoreGet it on Google Play
© 2026 ClearanceJobs - All rights reserved. ClearanceJobs is a DHI service .
  • Pay My Bill
  • EULA
  • Privacy Policy
  • Terms of Service
  • My Privacy Rights
  • Contact Us