Browse Jobs
Browse fresh roles from company career pages, then filter by keyword, location, salary, skills, remote scope, and more. Each listing links back to the employer-controlled apply path when available.
422 jobs match your filters
1mo
R
Principal Systems Engineer (Onsite)
RTX
Date Posted: 2026-04-29 Country: United States of America Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is requ
US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805
onsiteFull-time
1mo
C
Principal Systems Engineer-Defense
Curtisswright
Principal Systems Engineer-Defense We are growing and looking for a Principal Systems Engineer to join our team in Ashburn VA. As our Principal Systems Engineer you will be an industry-recognized expert in an engineering discipline or specialty area. You will have created or s
US-VA-Ashburn
onsiteFull-time
1mo
Principal Systems Engineer IVV
Ultra Maritime
Company: Ultra Intelligence & Communications Cyber (UK) Business Powering Decision Join the team redefining defense technology. From engineering systems that save lives to leading programs that change the battlefield—find your place in the future of defense. Cyber Business O
Maidenhead (GBR)
onsiteFull-time
1mo
R
Principal Systems Engineer (Onsite)
RTX
Date Posted: 2026-04-23 Country: United States of America Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is requ
US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805
onsiteFull-time
1mo
Q
Principal Systems Engineer (RF Systems)
Quartermaster
About Us: At Quartermaster AI, we believe the ocean should be a safe and sustainably managed resource for all. By leveraging cutting-edge AI and robotics, we unlock capabilities that were only recently impossible. Our distributed open-ocean systems enable every vessel to sense
Arlington, VA
remoteFull-timeEasy Apply
1mo
R
Principal Systems Engineer - Architecture and Requirements in Cameo
RTX
Date Posted: 2026-04-21 Country: United States of America Location: US-AZ-TUCSON-M09 ~ 3350 E Hemisphere Loop ~ BLDG M09 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is
US-AZ-TUCSON-M09 ~ 3350 E Hemisphere Loop ~ BLDG M09
onsiteFull-time
1mo
Principal Systems Engineer (Aircraft integration required)
Applied Research Solutions
Applied Research Solutions is seeking a full-time Principal Systems Engineer with aircraft integration experience for Hanscom AFB. Significant software management experience required, as this position will assist with the contractor process, architecture and coding oversight. The
Bedford, MA, United States
onsiteFull-time
2mo
R
Principal Systems Engineer – Anti-Tamper / Program Protection (On-site Tucson, AZ) – P4
RTX
Date Posted: 2026-04-16 Country: United States of America Location: US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (External Site) Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security c
US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (External Site)
onsiteFull-time
2mo
Principal Systems Engineer (Tunnels)
WSP
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in the U.S.
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in Australia
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in the Middle East
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in New Zealand
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in India
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer (Tunnels)
WSP in Africa
What if you could do the kind of work the world needs? At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ide
United Kingdom
hybrid
2mo
Principal Systems Engineer - SecOps (SIEM / SOAR / XDR)
Fortinet
As a member of the Subject Matter Expert (SME) Engineering Department, you will work closely with the Account Team to position our Portfolio of SecOps Solutions. Responsibilities: Member of the SME team which covers India region (India & SAARC Region) Expected to work from the of
Gurgaon, Haryana, India
remote
2mo
R
Principal Systems Engineer - Missile Guidance, Navigation, and Control Engineer
RTX
Date Posted: 2026-04-14 Country: United States of America Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is requ
US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805
onsiteFull-time
2mo
S
Principal Systems Engineer - 6 months contract Inside IR35
Safran Engineering Services UK Limited
In order to develop and expand the capabilities of SAFRAN Engineering Services in the UK, we are looking to recruit a Principal Systems Engineer to work on aircraft landing gear systems. The contract duration is six months, with a standard workweek of ...
Gloucester, England, United Kingdom
remoteContract
2mo
R
Principal Systems Engineer - Electronic Warfare
RTX
Date Posted: 2026-04-09 Country: United States of America Location: US-CA-GOLETA-H01 ~ 6380 Hollister Ave ~ BLDG H01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is req
US-CA-GOLETA-H01 ~ 6380 Hollister Ave ~ BLDG H01
onsiteFull-time
2mo
Principal Systems Engineer Lead
Cubic Corporation
Business Unit: Cubic Transportation Systems Company Details: When you join Cubic, you become part of a company that creates and delivers technology solutions in transportation to make people’s lives easier by simplifying their daily journeys, and defense capabilities to help p
Hyderabad, Telangana
onsiteFull-time
2mo
M
Principal Systems Engineer - Electrical
Mksinst
A Day in Your Life at MKS As a Principal Systems Engineer you will lead the development of the next generation of technologies that enable new market applications. You will provide technical leadership in efforts associated with a variety of disciplines including electronic cont
Wilmington, MA
onsiteFull-time
2mo
M
Principal Systems Engineer - Microwave
Mksinst
A Day in Your Life at MKS: (Summary & Objectives) As a Principal Microwave Systems Engineer, you will lead the development of the next generation of technologies that enable new market applications. The successful candidate should be highly self-motivated, able to operate indepe
Wilmington, MA
onsiteFull-time
2mo
H
Principal Systems Engineer - Hybrid - San Antonio, TX
Healthcare
Thank you for your interest in joining Solventum. Solventum is a new healthcare company with a long legacy of solving big challenges that improve lives and help healthcare professionals perform at their best. At Solventum, people are at the heart of every innovation we pursue. Gu
US - Texas - San Antonio
onsiteFull-time
3mo
L
Principal Systems Engineer/SME
Leidos
Leidos has a new and exciting opportunity for a Principal Systems Engineer in our Intelligence Sector's Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods
Fort Meade, MD
onsiteFull-time
3mo
R
Principal Systems Engineer (ONSITE)
RTX
Date Posted: 2026-03-05 Country: United States of America Location: US-MD-FULTON-8170 ~ 8170 Maple Lawn Blvd ~ MAPLE LAWN, Ste 190, 200 & 300 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. gover
US-MD-FULTON-8170 ~ 8170 Maple Lawn Blvd ~ MAPLE LAWN, Ste 190, 200 & 300
onsiteFull-time