Mechanical Engineer I (Onsite)

Prattwhitney; Tucson (AZ); On-site; USD 57,000 - 109,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k) match

Flexible work schedules

Paid time off

Job summary

RTX is seeking a Mechanical Engineer I for the Energetics Propulsion team in Tucson, AZ. The role focuses on propulsion system development for missile and space vehicle integration, with a strong emphasis on collaboration across disciplines and with suppliers.

Onsite work in Tucson and international travel may be required. You will support development programs, manage subcontracts, and present technical findings to management and government agencies.

Qualifications

• Bachelor's degree in Mechanical Engineering or related STEM field by start date.
• Experience in developing solid propulsion systems from concept to test/assembly.
• Experience with Earned Value Management System in project settings.
• Proven ability to lead proposals, cost accounts, and project teams.
• Ability to work with structural, thermal, aerodynamics, and low observables disciplines.
• Willingness to travel internationally to support suppliers.
• Experience with missile design, production support, or integration is a plus.

Responsibilities

• Apply advanced technologies and principles to propulsion system integration for missiles and space vehicles.
• Oversee propulsion subsystem development and subcontract management; review data and change requests.
• Lead collaborative efforts across technical disciplines and communicate capabilities to management and government agencies.
• Deliver technical presentations to management and government stakeholders.
• Interface with customers to identify user needs and translate them into technical requirements.
• Manage supplier collaboration and ensure compliance with SOWs.

Skills

Propulsion system development

Earned Value Management System

Project leadership

Cross-disciplinary collaboration

Supplier collaboration

Willingness to travel

Education

Bachelor's degree in Mechanical Engineering

Job description

Date Posted: 2026-09-02 Country: United States of America Location: US-AZ-TUCSON-802 ~ 1151 E Hermans Rd ~ BLDG 802 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world.

The Energetics and Propulsion Department is an engineering organization in the Hardware Engineering Directorate. This Department is responsible for the full spectrum of warhead, fuzing, and propulsion designs/technology, including power systems, ignition, and all other weapon initiation safety systems technology. The department is seeking to hire Mechanical Engineer I - Energetics Propulsion. This position is an onsite role located in Tucson, Arizona.

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.
• Involvement with both development and production programs across Raytheon Product Lines Review manufacturing processes and problem resolution as well as working directly with subcontractors on the design and manufacturing of solid rocket motor propulsion systems
• Work in a collaborative environment with program management in long-range program planning concerning new or projected areas of technological research and advancements and be a key spokesperson on program’s technical capabilities and future directions
• Manage propulsion system development projects and propulsion subcontracts; review and disposition subcontract data and change requests; and oversee supplier operations
• Develop and deliver technical presentations to management and government agencies
• Frequently interface with the Customer to identify user needs

Qualifications

• You Must Have Bachelor's degree in Mechanical Engineering or related (STEM) major obtained by start date.
• Experience in the development of solid propulsion systems from conceptual design through final test / assembly etc. Experience may be obtained through on-the-job experience, research, coursework, or projects
• Project engineering skills and experience using Earned Value Management System
• Demonstrated success as a proposal/cost account manager as well as project/team leader
• Demonstrated ability to develop and lead collaborative efforts with other technical disciplines including structural, thermal, aerodynamics and low observables
• Willingness to travel, including internationally, to provide supplier support
• Supplier collaboration experience and oversight generating specifications and statements of work (SOW)
• Working knowledge or experience with either missile design or development, production support and integration

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation Eligibility

Please consider the following role type definition as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 57,200 USD - 108,800 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

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.

Privacy Policy and Terms: RTX

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.