Senior Principal Systems Engineer; Onsite

Senior Principal Systems Engineer – Senior Level

Location:

El Segundo, CA or Fullerton, CA.
Security Clearance:
Secret (active/transferable U.S. DoD clearance required).
Citizenship: U.S. citizenship required.

• Lead the SEIT Control Account Manager (CAM) and cross-domain product owner team in an Agile framework for a fast-paced program.
• Support and lead a multidisciplinary team of engineers developing programmable cryptographic modules and systems.
• Architect, design, develop, integrate, and test cryptographic modules and systems.
• Create system‑level requirements, architectures, security designs, and certification documents.
• Work closely with software, firmware, and hardware engineers to ensure implementation meets product requirements.
• Perform system engineering analyses including trade studies, use‑case development, requirements definition/derivation, interface definition, and validation/verification.
• Support definition of operations concepts and procedure planning/development, interfacing with personnel from other organizations.
• Lead/attend technical interchange meetings and represent the organization in matters pertaining to the development of the project.
• Provide the technical interface to the customer and lead system‑integration tasks.
• Ensure integrity of all engineering products, drawings, plans, specifications, and requirements allocation products.
• Create required project documentation in support of contract deliverables, including development plans, requirement and design specifications, and test documents.
• Architect, design, develop, integrate, and test embedded software for network‑security appliances, including device‑management software, communication protocols, device drivers, and control‑plane security features.
• Work on problems and shape solutions with customers from tactical and strategic perspectives.
• Support development projects from concept through implementation and integration.
• Utilize excellent organizational, decision‑making, and communication skills.

• Degree in a STEM field or advanced degree with minimum 7–10 years of relevant experience.
• Ability to work effectively in multidisciplinary teams with customers.
• Knowledge of developing architectures and designs for complex modules.
• Efficient time management to support multiple projects concurrently.
• Proficient in collaborating with engineering, quality, and operations to oversee hardware development.
• Experience with requirements management using DOORS.
• Experience presenting and interfacing with customers (internal and external).
• Experience closing issues, risks, and opportunities.
• Current or transferability of a U.S. DoD Secret (or higher) security clearance.
• U.S. citizenship required.

• Experience with cryptographic products, designs, and certification processes.
• Cyber‑security knowledge including Risk Management Framework.
• Knowledge of NSA crypto certification process.
• Embedded system development experience.
• Technical depth with FPGAs, analog/digital circuits, and microprocessors.
• Experience with crypto algorithms and implementing cryptographic certifications.

• Medical, dental, and vision insurance.
• Three weeks of vacation for newly hired employees.
• Generous 401(k) plan with employer matching and lifetime income strategy.
• Tuition reimbursement program.
• Student loan repayment program.
• Life insurance and disability coverage.
• Optional additional coverages, including pet, home, auto, and critical illness insurance.
• Birth, adoption, and parental leave benefits.
• Family‑planning benefits (Ovia Health, fertility).
• Adoption assistance and autism benefit.
• Employee assistance plan with up to 10 free counseling sessions.
• Wellness incentives and rewards program.
• Virtual doctor visits and doctor‑on‑demand services.
• Child and elder care services via Bright Horizons.
• Relocation assistance as needed.

Salary Range: $145,600 – $276,800 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. RTX provides affirmative action for qualified individuals with a disability and protected veterans in compliance with relevant laws.