F135 Engine Core Upgrade (ECU) Propulsion Systems Analysis Engineering Intern (Summer 2027) (Onsite)

Date Posted:

2026-10-29

Country:

United States of America

Location:

US-CT-EAST HARTFORD-G ~ 400 Main St ~ BLDG G

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Security Clearance Type:

None/Not Required

Security Clearance Status:

Not Required

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 F135 Engine Core Upgrade (ECU) Program delivers propulsion system modernization for the F‑35 to support the aircraft’s upgraded Block 4 capabilities.

Within the F135 ECU Program, Engine Design & Systems Integration (ED&SI) is a dynamic engineering organization focused on the development and certification of military, commercial, and industrial gas turbine engines. The Engine Design & Systems Integration (EDSI) organization is responsible for the integration of components, modules, and sub-systems into world class commercial and military propulsion systems. This includes engine performance, operability, system level modeling and simulation, validation, and verification of performance. Operability, and control requirements, and functional engine and air vehicle systems integration. ED&SI also defines engine architecture, system and structural design as well as manages all requirements across the program.

• As a F135 Engine Core Upgrade (ECU) Propulsion Systems Analysis Engineering Intern, typical duties and responsibilities are listed below and are executed under the guidance of a more experienced Engineer:

• Introduction to performance system matching, engine component assessments, performance and operability predictions.

• Utilizing NPSS aero-thermal modeling code as a representation of the engine and other systems.

• Analysis tool and process improvements and automation.

• Frequent interaction and integration with other engineers in the Systems Team.

What You Will Learn

• This position offers the candidate an excellent opportunity to gain real world experience in the aero-thermal analysis of air breathing propulsion systems with a focus on system performance and operability; and offers an opportunity to develop close working experience with the P&W’s engineering development team.

• Engineering Interns at Pratt & Whitney work on challenging, meaningful, and impactful projects across our business.

• Our intern program seeks to help you develop an understanding of the aerospace industry and learn about our company and its operations.

Qualifications You Must Have

• Must be pursuing a Bachelor’s or Advanced degree inAeronautical, Aerospace, Mechanical Engineering, or related Science, Technology, Mathematics (STEM) and actively enrolled through the completion of the intern session.

• Experience with systems analysis tools and languages (e.g. Numerical Propulsion System Simulation (NPSS), Python or C++ related programming language)

• Minimum 3.0 Cumulative GPA

Experience may be obtained through on-the-job experience, research, coursework, or projects

Qualifications We Prefer

• Minimum 3.2 Cumulative GPA or higher

• Experience driving results through analytical thinking, adaptability, and continuous learning.

• Experience working effectively on teams.

• Able to obtain a U.S Government Secret Level Security Clearance

What We Offer

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

• Relocation Eligibility

Learn More & Apply Now!

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

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 37,000 USD - 82,000 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.

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Click on this link (http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice) to read the Policy and Terms

Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.