Senior Principal Systems Engineer - C3MS (Onsite)

Senior Principal Systems Engineer – C3MS (Onsite) Join the Integrated Platforms team as a Senior Principal Systems Engineer supporting the White House Communications Agency (WHCA) in Washington, DC. You will ensure the reliability, modernization, and mission readiness of the White House Secure Voice Network (WHSVN) by providing full‑spectrum engineering support for secure voice systems, including planning, design, implementation, testing, documentation, and lifecycle management for both TDM and IP‑based platforms. Responsibilities 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. Basic Qualifications Active DoD Top Secret/SCI with a current SSBI Security Clearance required on day1. U.S. citizenship required. Bachelor’s degree in STEM and at least 10years of relevant experience, or an advanced degree and at least 7years of experience. 3–5years of experience supporting circuit‑switched and IP‑based secure voice 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. Preferred Qualifications 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. Benefits Medical, dental, and vision insurance. Three weeks of vacation for newly hired employees. Generous 401(k) plan with employer matching funds and separate employer retirement contribution. Tuition reimbursement program. Student loan repayment program. Life insurance and disability coverage. Optional coverages such as pet, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, and ID theft protection. Birth, adoption, and parental leave benefits. Ovia Health, fertility, and family planning support. Adoption assistance. Autism benefit. Employee Assistance Plan with up to ten free counseling sessions. Healthy You Incentives and wellness rewards program. Doctor on Demand and virtual doctor visits. Bright Horizons child and elder care services. Teladoc medical experts and second opinion program. Equal Opportunity Employer RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr Prattwhitney