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L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris Technologies is the Trusted Disruptor in the defense industry. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

L3Harris’ Aerojet Rocketdyne segment seeks a Mechanical Design Intern to join our engineering design team at our Redmond, Washington location for the summer of 2026.  

This is an entry-level design engineering position with a focus on component design and mechanical integration. Working under the guidance of senior staff, you will support component design and integration of thrusters, nozzles, valves, and tanks used in high pressure applications. Responsibilities will span our Redmond product line to include mono-propellant engines, bi-propellant engines, electric propulsion thrusters and propulsion system programs including smallsat & cubesat propulsion systems. 

Under close supervision, the Mechanical Design Intern performs entry-level professional engineering assignments following established policies. The position requires some independent professional judgment and application of engineering principles, theories and concepts. The mechanical engineering responsibilities will concentrate on the mechanical design of liquid and electric propulsion thrusters and system level integration.

50% - Perform basic engineering calculations and preliminary design. Apply general knowledge of strength of materials, machining and joining processes, and non-destructive testing. Develop designs using computer aided design tools. Evaluate feasibility through the application of CAD models, engineering drawings and up-front analysis tools.

20% - Coordinate and interact with personnel from other engineering disciplines, manufacturing operations, quality engineering, and supply chain.

10% - Leverage Design for Manufacture (DFM) software to evaluate alignment with machining capabilities. Learn and apply geometric dimensioning and tolerancing, as well as associated inspection processes.

10% - Support hardware fabrication, testing, and evaluation. Support anomalies and failure investigations. 

10% - Prepare and present technical material to engineering leads and/or small audiences. Generate engineering reports for assigned projects or activities.  

Requirements 

• Candidates must be currently enrolled in a B.S. degree program in Aerospace, Mechanical, or Systems Engineering, or related program. Systems, Aerospace, Mechanical, Chemical, or Civil Engineering (or similar major) OR enrolled in an advanced degree program in related major, and returning to school upon completion of the assignment. 

US Citizenship required. Must also be able to satisfy federal government requirements for access to government information, and having dual citizenship may preclude you from being able to meet this requirement. 

In compliance with pay transparency requirements, the salary range for this role is $25/hr-$47.50/hr. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including relocation stipend, 401(k), EAP, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

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