Principal Systems Engineer - Algorithms (ONSITE)

Date Posted: 2026-08-04 • Location: Fullerton, CA • Onsite role • U.S. citizenship required for security clearance

About the Role

We are looking for Principal Systems Engineers in Algorithms to support the Joint Precision Approach and Landing System (JPALS) program. This individual will run and test modeling and simulation of algorithmic models using Simulink and MATLAB. The work is highly technical, requiring comfort with documenting equations, derivations, and generating plots in MATLAB, as well as data and statistical analysis. The successful candidate must work independently under limited supervision or collaborate with a team to achieve operational targets, and communicate effectively with internal and external stakeholders. Over time, the candidate may provide guidance, coaching, and training to other employees.

Responsibilities

• Develop algorithms, tools, and models for the JPALS program
• Provide guidance to the team for system troubleshooting and analysis
• Conduct independent research and analysis
• Draft technical papers and algorithm descriptions
• Lead technical discussions with customers and team members

Requirements

• Proficient in MATLAB, including code optimization and numerical stability
• Proficient in basic software development principles: configuration control, collaborative development, and formal processes
• Proficient in reading and developing algorithm descriptions, mathematical expressions, derivations, matrix manipulations, outlier analysis, and system-level analysis
• Proficient in performing data analysis and problem-solving (e.g., anomaly investigation)
• Strong technical writing and oral communication skills
• Experience with model-driven design using Simulink and auto-generated code
• Understanding of systems engineering discipline
• Degree in Science, Technology, Engineering, or Mathematics (STEM) with a minimum of 8 years of relevant experience, or an Advanced Degree in a related field with a minimum of 5 years of experience

Preferred Qualifications

• Experience performing complex statistical analysis and/or mathematical modeling
• Experience developing solutions for GPS Navigation Systems and Global Navigation Satellite Systems (GNSS) theory
• Familiarity with requirement development and sell-off
• Willingness to travel and perform fieldwork

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, including a 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, ID theft protection
• Birth, adoption, and parental leave benefits
• Ovia Health: fertility and family planning
• Adoption Assistance
• Autism Benefit
• Employee Assistance Plan, including up to 10 free counseling sessions
• Healthy You Incentives: wellness rewards program
• Doctor on Demand: virtual doctor visits
• Bright Horizons: child and elder care services
• Teladoc Medical Experts: second opinion program

Pay

The salary range for this role is $118,300 – $224,900 USD. The range is a good-faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including role, function, responsibilities, work experience, location, education/training, and key skills.