Senior Principal Systems Engineer – C3MS (Onsite)

Date Posted: 2026-08-05 Country: United States of America Location: US-DC-WASHINGTON-BOLLING AFB-CUST ~ 2859 Defense Blvd ~ BOLLING AFB, Bay 14 (External Site) Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​ Security Clearance Type: TS/SCI - Current Security Clearance Status: Active and existing security clearance required on day 1 Senior Principal Systems Engineer – C3MS (Onsite) Raytheon Company, Managed by Collins Aerospace     Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and   expertise   to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. You will be a member of a multi-disciplinary group of System,   Hardware   and Software Engineers. We are a growing business developing new products in an aggressive and competitive market. The   new designs   are exciting and technically challenging.    The Integrated Platforms (IP) team is hiring a   Systems Engineering position in Washington, DC (Anacostia) supporting the White House Communications Agency (WHCA). In this role, you will ensure the reliability, modernization, and mission readiness of the White House Secure Voice Network (WHSVN). You will provide   full- spectrum   engineering support across secure voice systems, including planning, design, implementation, testing, documentation, and lifecycle management for both   circuit switched   (TDM) and   IP based   platforms.   You will work directly with WHCA project managers and technical teams to   acquire   and deploy new capabilities, evaluate system performance, and support WHCA’s transition from legacy infrastructure to advanced secure IP voice solutions. This is a   hands- on ,   mission focused   role integral to   national level   Command and Control communications.   This position requires: US Government Department of Defense (DoD) Top Secret/SCI with a current SSBI Security Clearance Day 1 .   Onsite: This is an onsite role supporting our Washington, DC (Anacostia)   location. Sign-on Bonus Eligible What YOU will do:   Provide engineering support for WHSVN projects, procurements, and system enhancements.   Review existing system designs and develop updated technical solutions for both TDM and IP secure voice architectures.   Develop and   maintain   system drawings, test procedures, and other engineering documentation.   Support system integration activities, including site surveys, installation validation, and interoperability assessments.   Provide   configuration guidance and   assist   with required architecture or infrastructure modifications.   Analyze technical requirements, create engineering plans, and manage work through WHCA’s ticketing and collaboration tools.   Participate in program reviews, audits, and technical meetings, offering recommendations to improve system performance and support modernization efforts.   Produce design guidance, network depictions, and migration plans for full WHSVN implementation.   Qualifications You Must Have:   Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience Active and transferable US Government Department of Defense (DoD) Top Secret/SCI with a current SSBI Security Clearance required prior to start date ​ Ability to obtain and   maintain   higher   access and Special Access Program eligibility U.S. Citizen - U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract 3–5 years of experience supporting   circuit s witched   and   IP based   systems Experience with Command and Control Switching Systems on   mission critical   networks Knowledge of the Defense Red Switch Network (DRSN) through operational, testing, or engineering roles Experience contributing to system accreditation efforts, including XACTA updates and RMF execution Experience configuring, installing, and   validating   encryption devices for secure deployment Compliance with DoD 8140 Cyber Workforce Qualification requirements Qualifications We Prefer: Experience supporting secure voice or Command and Control systems in   mission critical   environments.   Experience modernizing legacy TDM systems and deploying secure   IP based   voice solutions.   Experience with system interoperability testing, lab validation, and technical risk assessment.   Ability to produce comprehensive engineering documentation such as system diagrams, test plans, and lifecycle planning materials.   Familiarity with WHCA environments, DRSN architectures, or DoD enterprise communications systems.   Experience supporting RMF compliance in collaboration with ISSO/ISSM personnel.   Experience coordinating with facility teams on power, cooling, and physical infrastructure requirements.   Strong skills in managing complex technical tasks,   maintaining   accurate   records, and communicating with government stakeholders.   Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to