Aftermarket and Sustainment Engineering - Structures Engineer Co-Op (January 2027) (Hybrid)

Prattwhitney; Aguadilla (PR); Hybrid; USD 13,000 - 27,000; Part time

Job summary

RTX in Aguadilla, Puerto Rico, is offering a Monday–Friday Co-Op internship from January to June. The program is designed for enrolled engineering students in Mechanical, Aerospace, or Civil disciplines who will reside in Puerto Rico at start and work in a hybrid environment with three days onsite and two days remote.

You will redact technical documentation, develop relationships with customers, and support MRO processes while applying stress and fracture mechanics concepts.

Qualifications

• Enrolled in an accredited undergraduate or graduate degree program in Mechanical, Aerospace or Civil Engineering.
• Minimum GPA of 3.0
• Must be a U.S. Citizen; access may require US citizenship.

Responsibilities

• Provide engineering support to maintenance, repair and overhaul (MRO) processes.
• Perform structural assessments for stress analysis, vibration, low cycle fatigue life and residual life (fracture mechanics) prediction.
• Participate as an active member in cross-discipline teams to provide design solutions balancing performance, cost, schedule and quality.
• Develop and incorporate new ways to advance technology and improve processes as an individual and as a team contributor.
• Embrace a continuous improvement philosophy.

Skills

Finite element software

Python

C++

Fortran

MATLAB

VBA

NX

ANSYS

APDL

Workbench

NASTRAN/PATRAN

MS Office

Education

Engineering degree program (Mechanical/Aerospace/Civil)

GPA 3.0 or higher

Tools

ANSYS

APDL

Workbench

ABAQUS

PATRAN/NASTRAN

MATLAB

VBA

Python

C++

Fortran

MS Office

NX

Job description

Date Posted: 2026-10-01 Country: United States of America Location: US-PR-AGUADILLA-110 ~ Rd 110 N Km 28.8 ~ RD110 Position Role Type: Hybrid 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: None/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. At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Immerse yourself in a Monday-Friday Co-Op session, that will run from January to June (it is expected students will take this time off from coursework to fully engage with this working mentorship opportunity). This position will sit at our Aguadilla, PR location. You must be residing in Puerto Rico at the time of starting employment. Relocation is not offered.

What You Will Learn

Redact clear technical documentation, as well as to create and provide impactful, persuasive technical presentations to internal and external customers.

Develop and sustain a healthy work relationship based on mutual trust with peers, internal and external customers where significant interaction is expected.

Manage increase workload and changes in priorities by utilizing project management skills.

What You Will Do

Provide engineering support to maintenance, repair and overhaul (MRO) processes.

Perform structural assessments for stress analysis, vibration, low cycle fatigue life and residual life (fracture mechanics) prediction.

Participate as an active member in cross-discipline integrated product teams to provide design solutions that balance performance, cost, schedule, and quality requirements.

Develop and incorporate new ways to advance technology and improve processes as an individual and as a team contributor.

Embrace a continuous improvement philosophy.

Qualifications You Must Have

Enrolled in an accredited undergraduate or graduate degree program in an applicable field of study: Mechanical, Aerospace and Civil Engineering.

Minimum GPA of 3.0

Must be a U.S. Citizen.

This position may require access to systems/tools that are restricted to individuals who possess US citizenship.

Qualifications We Prefer

Excellent verbal and written communication skills and a consistent record of collaboration, innovation, and initiative.

A passion for learning about and pursuing a career in aviation and aerospace.

Creative problem-solving skills and adaptability in responding to new business challenges.

Eager to learn new things, contribute a fresh perspective, and share your knowledge with others.

Strong interpersonal, time management and organizational skills.

Team oriented and cultural awareness.

Basic experience with some of these software and programing languages: ANSYS, APDL, Workbench, ABAQUS, PATRAN / NASTRAN, MATLAB, VBA, Python, C++, Fortran, MS Office or NX.

Completed courses in material sciences, mechanics of materials, material failure analysis or manufacturing process.

Aftermarket and Sustainment Engineering executes both military and commercial repair design and repairs substantiations for engines. We create and improve ASE business and repair development tools. We design, develop, and qualify military repair tooling. In addition to transforming the future of flight, we are also transforming how and where we work. We’ve introduced role types to help you understand how you will operate in our blended work environment. This position is classified: Hybrid. Employees who are working in Hybrid roles will work regularly both onsite and offsite. This means that responsibilities of the job need to be performed onsite in Aguadilla, Puerto Rico on a regular basis with 3 days onsite and 2 days remote following the schedule assigned by the Manager.

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.

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.