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Keywords: Senior Software Engineer, Level 3 - Clearance Required, Location: USA

Page: 1

Sr. Cybersecurity Software Engineer - Secret Clearance Required

Software Engineer, you will lead the design, development, and security hardening of mission-critical web-based and Java... requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: Top Secret...

Company: Lockheed Martin
Location: USA
Posted Date: 26 Dec 2025

Senior Network Engineer Data Center Manager

MANTECH seeks a motivated, career and customer-oriented Senior Network Engineer Data Center Manager to join our team... for providing in-depth and high level, support to end-user community on hardware, software and network related problems, questions...

Company: ManTech
Posted Date: 01 Jan 2026

Senior Electrical Engineering Supervisor

within the Leidos Maritime Systems Division is looking for a Senior Electrical Engineer to supervise a series of senior engineers.../electronic hardware design, integration and system level test and commensurate with primary responsibilities. Master’s degree...

Company: Leidos
Location: Lynnwood, WA
Posted Date: 03 Jan 2026
Salary: $131300 - 237350 per year

Senior Signatures Modeling Engineer

research and development problems? Leidos currently has an exciting opening for a signatures modeling engineer to work... in our Beavercreek office in the greater Dayton, OH area. As a Signatures Modeling Engineer, you will apply your skills and critical...

Company: Leidos
Location: Beavercreek, OH
Posted Date: 03 Jan 2026
Salary: $131300 - 237350 per year

Network Management Systems Engineer

monitoring environment and work under the supervision of a Senior NMS Engineer. In this role, the candidate will be responsible...Description Leidos is seeking a Network Management Systems (NMS) Engineer at Fort Belvoir, VA to support operations...

Company: Leidos
Location: Fort Belvoir, VA
Posted Date: 25 Dec 2025
Salary: $73450 - 132775 per year

Senior Software Engineer, Level 3 - Clearance Required

Engineer. In this role, you will support the software engineering lifecycle following the program Software Development Plan...LMCareers Business Unit SPACE Security Clearance Secret Shift First Direct/Indirect Direct Business...

Company: Lockheed Martin
Location: USA
Posted Date: 09 Jan 2026
Salary: $107300 - 185840 per year

Senior Software Engineer, Level 3 - Clearance Required

as Testbed Simulation Software. Secret clearance is required. Basic Qualifications - Unix/Linux based development..., and Operating System (OS) level experience, C/C++/Java experience, and Database experience. - Must have experience with software...

Company: Lockheed Martin
Location: Sunnyvale, CA
Posted Date: 08 Jan 2026
Salary: $107300 - 185840 per year

Senior Systems Engineer, Level 3 - Clearance Required

LMCareers Business Unit SPACE Security Clearance TS/SCI w/Poly Shift First Direct/Indirect Direct... to dream big, then we want to build a better tomorrow with you. As a Systems Engineer, you will be part of the System...

Company: Lockheed Martin
Location: Littleton, CO
Posted Date: 14 Nov 2025
Salary: $102800 - 178135 per year

Senior Systems Engineer, Level 3 -Top Secret Clearance Required

LMCareers Business Unit SPACE Security Clearance TS/SCI Shift First Direct/Indirect Direct Business... Area Space Department 72C1A00:CS3 Space Security Job Class Systems Engineering: Software Job Category...

Posted Date: 23 Nov 2025
Salary: $102800 - 178135 per year

Senior DevSecOps Engineer, Level 3 - Top Secret - Clearance Required

LMCareers Business Unit SPACE Security Clearance Top Secret Shift First Direct/Indirect Direct Business... should be excited about opportunities incorporating new technologies into the software development process...

Posted Date: 22 Nov 2025
Salary: $111700 - 193660 per year

Systems Engineer – Senior Level - TS/SCI Clearance Required

Description: We are seeking a highly motivated and experienced Senior Systems Engineer specializing in Sensor... in segment level Systems Engineering 3+ years of experience in multiple system, service, and interface integration...

Company: Core-CSI LLC.
Location: Sterling, VA
Posted Date: 08 Jan 2026

Systems Engineer – Senior Level - TS/SCI Clearance Required

Description: We are seeking a highly motivated and experienced Senior Systems Engineer specializing in Sensor... in segment level Systems Engineering 3+ years of experience in multiple system, service, and interface integration...

Company: Core-CSI LLC.
Location: Sterling, VA
Posted Date: 21 Dec 2025

Senior Software Engineer - Guardian (C2/SA/Multi-Domain) TS Clearance Required

impact. We’re looking for a senior-level engineer who thrives on solving complex problems, cares about good architecture.../WebSockets) with message persistence and audit in IL5/IL6. Engineer multi-level security (MLS) patterns and cross-domain flows...

Company: Aviture
Location: Omaha, NE
Posted Date: 24 Dec 2025

Senior Software Developer - CLEARANCE REQUIRED

Zachary Piper Solutions is seeking a cleared (ideally a TSA or ICE PT level 4, or any DHS clearance) Senior Software...-HYBRID keywords: Senior Software Developer, Software Engineer, Backend Developer, Python Developer, Remote Developer...

Posted Date: 24 Dec 2025
Salary: $135000 - 150000 per year

Sr. Software Engineer (Special Projects) - Top Secret Clearance

AND BENEFITS: Pay Range: Software Engineer/Senior: $160,000.00 - $220,000.00/per year Your actual level and base salary... ultimate goal of enabling human life on Mars. SR. SOFTWARE ENGINEER (SPECIAL PROJECTS) - TOP SECRET CLEARANCE As a Software...

Company: SpaceX
Location: USA
Posted Date: 25 Nov 2025

Sr. Site Reliability Engineer - Top Secret Clearance (Application Software, Data)

AND BENEFITS: Pay Range: Software Engineer/Senior: $160,000.00 - $220,000.00/per year Your actual level and base salary... ultimate goal of enabling human life on Mars. SR. SITE RELIABILITY ENGINEER, DATA - TOP SECRET CLEARANCE (APPLICATION...

Company: SpaceX
Location: USA
Posted Date: 19 Nov 2025

Sr. Software Engineer, HITL - Top Secret Clearance

ultimate goal of enabling human life on Mars. SR. SOFTWARE ENGINEER, HITL - TOP SECRET CLEARANCE As a Sr. Software Engineer... to work extended hours and weekends when needed COMPENSATION AND BENEFITS: Pay range: Software Engineer/Senior...

Company: SpaceX
Location: USA
Posted Date: 04 Oct 2025

Software Engineer Senior, Test Automation - Level 3

solutions for the F-16 and FA-50 programs. What You Will Be Doing As the Software Engineer Senior - Test Automation...: Software Job Category Experienced Professional Req Type Full-Time Job Description You will be the Software Engineer...

Company: Lockheed Martin
Location: Fort Worth, TX
Posted Date: 22 Nov 2025
Salary: $107300 - 185840 per year

Senior Software Engineer, Level 3

and flight software. Lockheed Martin Space is seeking a full time Senior Software Engineer. In this role, you will support the... and leadership skills then we hope you will consider applying. We are looking for an senior software engineer with a proven technical...

Company: Lockheed Martin
Location: Littleton, CO
Posted Date: 27 Dec 2025
Salary: $107300 - 185840 per year

Senior Software Engineer - Level 3

is seeking a highly experienced Software Engineer to design, develop, and implement a modern software framework for the F-35... aircraft. As a Senior member of the F-35 Ground Systems MPE Software team, the successful candidate will be responsible...

Company: Lockheed Martin
Location: Fort Worth, TX
Posted Date: 19 Dec 2025
Salary: $107300 - 185840 per year