Principal Systems Engineer Onsite

Principal Systems Engineer (Onsite)

Location: Largo, FL

Security Clearance: U.S. Government DoD Secret Clearance day 1; ability to obtain Top Secret. U.S. citizenship required.

• Organize and lead the development of full‑lifecycle solutions from CONOPS to Validation while collaborating with the customer, subcontractors, and executive leadership.
• Guide the development of new technologies to support business capture.
• Identify technology gaps in existing systems and solutions.
• Own the preparation, cost, and schedule of design reviews as well as development, integration, dry run, and formal qualification testing.
• Influence decision‑makers with recommended courses of action across complex problems.
• Review and document major changes in systems or processes to solve complex problems.

• Ability to lead multidisciplinary teams of design professionals including Electrical, Mechanical, Software, Test, Logistics, and other system engineers.
• Experience in at least three of the following:
  Systems Engineering, Test Engineering, Software Engineering, Mechanical Engineering, Electrical Engineering.
• Experience across the Systems Engineering V with emphasis on development, integration, and test.
• Experience working with Secure Voice and VTC Communication Systems.
• Typically requires a STEM degree and minimum 8 years relevant experience or advanced degree with 5 years experience.
• Active and transferable DoD Secret clearance; ability to obtain Top Secret.
• U.S. citizenship.

• Familiarity with embedded systems, microcontrollers, and communication protocols (I2C, SPI, UART).
• Experience with voice communication systems, VoIP protocols like SIP, RTP, SRTP.
• Familiarity with multicast networking (IGMP, PIM).
• Strong understanding of networking principles, TCP/IP, UDP, network troubleshooting tools (Wireshark).
• Basic understanding of firmware development (VHDL) and/or software development (C/C++, Python).
• Knowledge of military specifications (MIL‑STD‑810, MIL‑STD‑461).
• Proficiency in system design tools (MATLAB, Simulink, or equivalent).
• Experience leading discussions with customers and vendors/subcontractors.
• Current active Top‑Secret clearance.

• Medical, dental, and vision insurance.
• Three weeks of vacation for newly hired employees.
• Generous 401(k) plan with employer matching and separate retirement contribution, including Lifetime Income Strategy option.
• Tuition reimbursement program.
• Student loan repayment program.
• Life insurance and disability coverage.
• Optional coverages: pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal,  protection.
• Birth, adoption, and parental leave benefits (including Ovia Health, fertility, and family planning). Autism Benefit Employee Assistance Plan including up to 10 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 second‑opinion program.
• Relocation assistance available.

Salary: $107,500 – $204,500 USD

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 or 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 Section
503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.