ClearanceJobs
  • Candidates
  • Employers
  • Hiring Companies
  • News & Career Advice
  • Login
  • Register now

Top Secret / SCI Clearance Jobs

Top Secret/SCI

Viewing 1 - 20 of 17,215

Top Secret / SCI Jobs requiring security clearance

Show:
Sort by:

Software Engineer with Poly SR SWE1

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 721615BR Description:THE WORKThis senior role fosters collaboration with other senior engineers for the development of advanced data analytics solutions and agile development projects in s...

user avatar

System Integration Test

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

Job Number 720572BR Description:Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities...

user avatar

Software Developer - Advanced

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 718999BR Description:What We're Doing:Lockheed Martin, Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced electronics to undermine ...

user avatar

2027 Raytheon Intern - Software Engineer - CO/PA/TX/VA (Onsite)

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

Date Posted:2026-04-08Country:United States of AmericaLocation:US-VA-DULLES-760 ~ 22260 Pacific Blvd ~ BLDG 60Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: T...

user avatar

Principal System Administrator

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

Date Posted:2026-04-08Country:United States of AmericaLocation:US-TX-RICHARDSON-C37 ~ 1737 Cityline Dr ~ CITYLINE C37Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirem...

user avatar

Cyber Software Engineer Senior Staff

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

Job Number 717895BR Description:WHAT WE'RE DOINGLockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced ele...

user avatar

Project Manager/Transition lead TS/SCI Full Scope Poly

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

A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You'll work with leading companies across industries, helping them shape their hybrid cloud and...

user avatar

Software Engineer (Algorithm Developer) - Early Career

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
King Of Prussia, PA(On-Site/Office)
Posted today
TS/SCI
Not Specified

Job Number 698871BR Description:By bringing together people that use their passion for purposeful innovation, at Lockheed Martin we keep people safe and solve the world's most complex challenges. Our...

user avatar

Systems Engineer (SE3)

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 715971BR Description:THE WORKThis Systems Engineering role fosters collaboration with other engineers to document, define, and validate high level design/architecture drawings, communicate...

user avatar

2027 Raytheon Full Time - Java/C++ Software Engineer I - CO/PA/T

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

Date Posted:2026-04-08Country:United States of AmericaLocation:US-VA-DULLES-760 ~ 22260 Pacific Blvd ~ BLDG 60Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: T...

user avatar

2026 RF Hardware Electrical Engineer I- Onsite

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

Date Posted:2026-04-08Country:United States of AmericaLocation:US-CO-AURORA-S75 ~ 16800 E Centretech Pkwy ~ BLDG S75Position Role Type:Onsite U.S. Citizen, U.S. Person, or Immigration Status Requireme...

user avatar

Senior Software Engineer Staff - Clearance Required

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

Job Number 712837BR Description:This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you...

user avatar

Software Engineer with Poly SR SWE1

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 712532BR Description:THE WORKThis senior role fosters collaboration with other senior engineers for the development of advanced data analytics solutions and agile development projects in s...

user avatar

Data Scientist with Poly SR DS2

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 712046BR Description:THE WORKThis senior role fosters collaboration with other senior engineers for the development of advanced data analytics solutions and agile development projects in s...

user avatar

DevOps Engineer - Advanced

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 711501BR Description:What We're Doing:Lockheed Martin, Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced electronics to undermine ...

user avatar

Software Engineer - Senior Level

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 711010BR Description:WHAT WE'RE DOINGLockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced ele...

user avatar

Software Engineer - Mid Level

New
Lockheed Martin
Apply today! Be one of the first candidates to apply for maximum exposure.
Annapolis Junction, MD(On-Site/Office)
Posted today
TS/SCI
Polygraph

Job Number 711009BR Description:WHAT WE'RE DOINGLockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today's most daunting challenges: the use of advanced ele...

user avatar

Targeting Analyst Expert

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

Company DescriptionFounded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions,...

user avatar

Tactical Operations Lead

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

Company DescriptionFounded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions,...

user avatar

Naval T&E Analyst

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

OverviewSystems Planning and Analysis, Inc. (SPA) delivers high-impact, technical solutions to complex national security issues. With over 50 years of business expertise and consistent growth, we are ...

user avatar
ClearanceJobs
  • About Us
  • Support
  • Browse Jobs
  • Security Clearance FAQs
  • AgileATS
  • FedWork
  • Blog
  • Privacy Policy
  • Terms of Service
  • My Privacy Rights
  • Pay My Bill
  • Contact Us
  • EULA
Download on the App StoreGet it on Google Play

© 2026 ClearanceJobs - All rights reserved. ClearanceJobs is a DHI service.