Modeling and Simulation Senior Principal Engineer; Onsite

Date Posted:  
• Country:
United States of America
•

Location:

US-TX-RICHARDSON-C37 ~ 1737 Cityline Dr ~ CITYLINE C37
• Role Type:
Onsite
• U.S. Citizenship Required
• Security Clearance: TS/SCI with Polygraph (Active, existing required).

Raytheon (RTX) seeks a Senior Principal Engineer in Modeling and Simulation to join the Mission Applied Science & Technology (MAST) directorate. This role involves developing Python-based simulation applications and other data‑analytic solutions for complex real‑world systems.

Primarily onsite in Sterling, VA;
Richardson, TX; or McKinney, TX. May require travel to other U.S. Raytheon sites.

• Interface with senior leaders, stakeholders, end users, and subject matter experts to define production model requirements, validate implemented models, and conduct demonstrations.
• Collaborate with a multidisciplinary team to define, design, and implement new production model configurations and software features for a Python‑based simulation application.
• Employ data analytic methods (data collection and processing, statistical analysis, distribution fitting, etc.) to maintain production model input parameters.
• Conduct verification, validation, and testing of new and revised production model configurations and software features.
• Deliver presentations and demonstrations to leaders and stakeholders across multiple levels of the organization, functional disciplines, and business units.
• Participate in code reviews and enforce adherence to coding standards and best practices.

• Minimum 10 years of relevant experience in a STEM field (Bachelor’s degree in Science, Technology, Engineering, or Mathematics).
• Experience collaborating with customers to define requirements and measures of success.
• Experience with simulation modeling and analysis processes for complex real‑world systems: problem definition, data processing, statistics, figures of merit, model design and translation, verification and validation, visualizations, etc.
• Proficiency with multiple Python libraries (Num Py, Pandas, Sim Py, Panel, Bokeh, Pydot, PyQt, Plotly Dash, Holo Viz, Graphviz, etc.) and an object‑oriented programming environment.
• Experience working through terminal interfaces (Bash, Power Shell, iPython, etc.).
• Secure U.S. government‑issued security clearance (TS/SCI with Polygraph) – existing, active required.

• Strong customer focus.
• Experience with statistics and statistical modeling (logistic regression, Bayesian models, etc.) and/or data distribution fitting (normal, lognormal, Weibull, etc.).
• Experience implementing discrete event simulation.
• Technical leadership/mentorship experience.
• Experience with version control tools (Bitbucket, Git Hub, Git Lab, Azure Dev Ops, etc.).
• Experience working with distributed teams across multiple time zones.
• Scrum Master and/or Product Owner certification.

• Medical, dental, vision, life insurance, short‑term and long‑term disability.
• 401(k) match, flexible spending accounts.
• Flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, holidays.
• Relocation assistance available.
• Annual short‑term and/or long‑term incentive compensation programs (dependent on level and collective‑bargaining agreement).
• Compliance with affirmative action for individuals with a disability and protected veterans.

USD 132,400 – 251,600 (estimates for all experience levels).

Position requires an existing TS/SCI with Polygraph clearance. DCSA CAS handles the clearance process.

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 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.