Mechanical Design Engineering Intern
Propulsion Team
Posted on 10/8/2025

RTX
Compensation Overview
$20.19 - $42.31/hr
Fairfield, CA, USA
In Person
Must be a commutable distance to Fairfield, CA to work an onsite schedule. This position may be eligible for relocation.
Date Posted:
2025-10-06Country:
United States of AmericaLocation:
HCA09: Mission Sys (Propulsion) 3530 Branscombe Road , Fairfield, CA, 94533 USAPosition Role Type:
OnsiteU.S. Citizen, U.S. Person, or Immigration Status Requirements:
This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here: https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62Security Clearance:
None/Not RequiredAre 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.
The intern position will be supporting the Propulsion Team in some of their daily activities - from drawing updates to proposal and analysis support. This position will be a Design Engineering position and will collaborate closely with our System Engineering, Project Engineering, Chemistry and Materials Engineering, as well as, all Operations departments.
What You Will Do:
Support through all phases of design including; bid and proposal, conceptual design, preliminary design, detailed design, qualification testing, new product introduction, and production implementation.
Successfully execute on design/project tasks required to develop and qualify aircraft ejection seats by ensuring technical scope integrity and budget/schedule accuracy
Utilize UG/NX CAD software and facilitate the drafting department to produce standard, quality, and industry producible models/drawings
Work as part of a cohesive team with test engineering, product engineering, system engineering, and program management
Support program by technical writing presentations and reports for customer approval
Support Program Management with any preparation of bids and proposals
Support Systems Engineering on requirements analysis and the requirement compliance plan
Interacts with Business Development department to ensure customer satisfaction and business strategies
Qualifications You Must Have:
Requires a High School Diploma or equivalent and student must be pursuing a Bachelor’s or advanced degree in an applicable discipline.
U.S. Person (U.S. citizen, permanent resident, or granted refugee or asylee status) as defined here: https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62
Qualifications We Prefer:
Studentmust currently be enrolled and pursuing a bachelor’s or master’s degree Mechanical or Aerospace Engineering or related field of study from an accredited institution.
Strong analytical skills including strong knowledge of physics, dynamics, and statics.
Experience presenting design solutions to internal and external customers
3D CAD experience with high end CAD software (e.q. NX, Catia,)
Previous experience using Unigraphics/NX CAD experience including Enovia PLM experience
Previous experience with machining, sheet metal, composites, and fabric design
Previous experience with energetic cartridge actuated devices or propellant actuated devices
Learn More and Apply Now!
Collins Aerospace, a RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market.
Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today.
WE ARE REDEFINING AEROSPACE.
* Please consider the following role type definitions 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. Must be a commutable distance to Fairfield, CA to work an onsite schedule. This position may be eligible for relocation.
Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings.
At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.
Apply now and be part of the team that’s redefining aerospace, every day.
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 42,000 USD - 88,000 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:
Click on this link to read the Policy and Terms

Internships by Season
Summer InternshipsFall InternshipsWinter & Spring InternshipsCo-op InternshipsLatest InternshipsInternship Search Guides
How to Find an InternshipInternship SalariesInternship DeadlinesMock Interview Prep