Senior Principal Engineer – Solid Propulsion

RTX; Tucson (AZ); On-site; USD 132,400 - 251,600; Full time

Benefits offered by this job

Medical insurance

Dental insurance

401(k) match

Flexible work schedules

Paid time off

Job summary

Prattwhitney is seeking a Principal Engineer – Solid Propulsion in Tucson, AZ. This role involves developing advanced technologies for missile systems and space vehicles, managing projects, and interfacing with customers for user needs.

Requirements include a STEM degree with 8 years of experience or 10+ years in lieu. Preferred candidates will have ample experience in propulsive technology and leadership skills in project engineering.

The position offers a competitive salary range of $132,400 to $251,600, along with comprehensive benefits.

Qualifications

• Minimum of 8 years relevant experience, or 10+ years experience in lieu of a degree.
• Experience in development of solid propulsion systems.

Responsibilities

• Develop and deliver technical presentations to management and government agencies.
• Manage propulsion system development projects and subcontracts.
• Work collaboratively with program management for long‑range program planning.

Skills

Solid propulsion systems

Project-engineering skills

Supplier collaboration experience

Ability to lead collaborative efforts

Education

Bachelor of Science, Technology, Engineering or Mathematics (STEM)

Job description

Date Posted: 2026-04-08

Location: Tucson, AZ (US-AZ-TUCSON-M07)

Role Type: Onsite

Security Clearance: Active DoD Secret clearance required. U.S. citizenship required.

Principal Engineer – Solid Propulsion

What You Will Do

Apply or develop highly advanced technologies, scientific principles, theories and concepts to the systems integration of propulsion, thrusters, controllers, software, mechanical and electrical interfaces for integration into missile systems and space vehicles.

Involve with both development and production programs across Raytheon product lines.

Review manufacturing processes and resolve problems, working directly with subcontractors on the design and manufacturing of solid rocket motor propulsion systems.

Work collaboratively with program management for long‑range program planning regarding new areas of technological research and advancements, and act as a key spokesperson on the program’s technical capabilities and future directions.

Manage propulsion system development projects and subcontracts; review and disposition subcontract data and change requests; oversee supplier operations.

Develop and deliver technical presentations to management and government agencies.

Interface frequently with the customer to identify user needs.

Act independently to uncover and resolve issues associated with the development and implementation of operational missile programs, and help obtain new company business.

Qualifications

You Must Have:

• A Bachelor of Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of relevant experience, or 10+ years of experience in lieu of a degree.
• Experience in development of solid propulsion systems.

We Prefer:

• 12 or more years of directly related experience in propulsive technology and its application to solid or liquid, and/or mono‑propellant propulsion systems.
• Patriot Missile experience.
• Systems knowledge to assure full development of propulsion requirements and dissemination to sub‑component levels.
• Project‑engineering skills using Earned Value Management System.
• Success as a proposal/cost account manager and project/team leader.
• Ability to develop and lead collaborative efforts with other technical disciplines such as structural, thermal, aerodynamics and low‑observable technologies.
• Willingness to travel internationally to provide supplier support.
• Supplier collaboration experience and oversight in generating specifications and statements of work (SOW).
• Knowledge or experience with missile design, development, production support and integration.
• Experience working with DoD customers and/or contractor executives and technical leadership.

What We Offer

Salary range: $132,400 – $251,600 USD.

Benefits include medical, dental, vision, life insurance, short‑term and long‑term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, parental leave, paid time off, holidays, and potential incentive compensation.

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 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.