Mechanical Engineer I (Onsite)

Pratt & Whitney Canada; El Segundo (CA); On-site; USD 63,000 - 120,000; Full time

Benefits offered by this job

Relocation Eligibility

Job summary

RTX in El Segundo, CA is seeking a Mechanical Design Engineer I to support design, integration and test across space programs. The role focuses on opto‑mechanical designs using Creo, with assembly, integration and test in a lab environment. You will work with a cross‑functional team of engineers to produce drawings with GD&T, ensure manufacturability and contribute to producibility.

Security clearance requirements apply for U.S. citizenship.

Qualifications

• Bachelor's degree in Mechanical Engineering or related STEM field by start date.
• Experience with CAD software or CREO.

Responsibilities

• Design and modify opto-mechanical components and drawings.
• Generate assembly instructions and support build/test activities.
• Apply GD&T to drawings and ensure manufacturability and producibility.

Skills

CAD software

CREO

GD&T

Education

Bachelor's degree in Mechanical Engineering

Tools

Creo

Job description

Date Posted: 2026-09-18

Country: United States of America

Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. 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: Active and existing security clearance required after day 1

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.

What You Will Do

The Mechanical Design Engineer I will support design, integration and test across multiple space programs in El Segundo, CA. The selected candidate will perform mechanical component design on opto‑mechanical systems using Creo, and support assembly, integration and test activities in a lab environment. The candidate is expected to work with a team of specialized junior and senior manufacturing and mechanical engineers to support the design, build and test of EO/IR space hardware. Responsibilities include creating and/or revising opto‑mechanical designs/drawings, generating assembly instructions and providing build support in conjunction with technicians and other engineering disciplines, as well as design for producibility and manufacturability. T

Key Responsibilities

• Application of engineering principles to aid in design and development.
• Perform in depth research and analyzing mechanical assemblies
• Generate detailed design drawings incorporating GD&T to ensure the requirements are maintained.
• Work with a cross-functional engineering and analysis team involving material selection, thermal management, precision mechanical mounting and motion, and structural optimization while balancing schedule constraints.
• Utilize change management and process engineering changes in a product data management tool. This will include creation, rework and changes to the design as the changes occur. Contacts are primarily with the immediate section manager, team lead, project leaders and other personnel (peers) within the applicable program.

Qualifications You Must Have

• Bachelor's degree in Mechanical Engineering, or related field (STEM) obtained by start date
• Experience with CAD software or CREO
• Experience may be obtained through on‑the‑job experience, research, coursework, or projects

Qualifications we Prefer

• Experience in the design and/or build of space hardware
• Experience in GD&T and Tolerance analysis for designs/drawings
• Experience in CAD design using Creo
• Experience leading a design or build team on a project
• Knowledge of DFMA principles and modern machining techniques
• Prior experience in Defense or Aerospace
• Understanding of Change Management, and processing Engineering Changes in a Product Data Management Tool

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

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 62,900 USD - 119,700 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 only at 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.