Mechanical Design Engineer Jobs in Puerto Rico (NOW HIRING)

Date Posted: 2026-08-14 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 certain necessary systems. Security Clearance: None/Not Required

At RTX, the world 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. Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines and auxiliary power systems and has been revolutionizing modern flight for over 100 years. Join us and help shape the future of aerospace and defense.

We have an exciting opportunity for a Principal Design Engineer to work on the F135 military program! The Hot Section Engineering Design team is seeking an experienced Principal Mechanical Design Engineer, preferably with turbine experience. Airfoils or Rotors experience is preferred, but any experience with turbo machinery may be appropriate. The Engineer will work with the other disciplines of the Integrated Product Team (IPT) including project, structures, durability, aero-thermal, and product definition. Engineer will lead interactions with other Hot Section Engineering IPTs. Engineer also will be leading all technical capability aspects of the team. If you have strong leadership skills, experience in rotors or airfoils design and a passion for our mission, we are interested to hear from you! Serve as a Principal Technical leader specializing in Turbine module design, analysis, and sustainment, resolving complex and high-impact mechanical engineering challenges with minimal oversight while ensuring safe, balanced, and robust system-level solutions. Provide clear technical direction for Turbine hardware outsourcing activities, owning the review, governance, and integration of supplier and partner engineering work to ensure high-quality design outputs and adherence to HSE standards. Build and maintain credibility with internal and external customers by consistently delivering validated, data-driven engineering solutions and demonstrating accountability for the performance, life, and reliability of Turbine hardware. Collaborate closely with Customer Technical Support (CTS), Maintenance Repair & Overhaul Engineering (MRO‑E), and field service teams to interpret customer data, assess limits expansions, update maintenance manual limits, and lead timely root cause investigations of Turbine-related field events. Support Operations by partnering with Manufacturing, quality, and Engineering Support Teams to address production issues for Turbine components, resolving nonconformances, enabling smooth execution, and ensuring timely delivery of hardware for engine assembly. Represent Turbines within cross-functional forums, technical reviews, and design boards, providing clear engineering rationale, influencing decisions, and ensuring alignment across Hot Section Engineering. Demonstrate strong mentorship by coaching junior engineers and design contributors in Turbine design fundamentals, analytical methods, problem-solving approaches, and best-in-class engineering practices. Foster a culture of collaboration, openness, and shared accountability across the Hot Section Engineering organization by modeling effective communication, active listening, and high-integrity decision-making. Lead with empowerment by providing actionable feedback, encouraging ownership, supporting professional growth, and cultivating a high-performance technical team environment. Promote continuous improvement by driving adoption of digital tools, advanced analysis methods, standard work, and lessons‑learned processes that elevate organizational capability. English (read, write, speak) is required when communicating with customers, co-workers, or supervisors who only speak English. Travel is up to 10%.

You Must Have Bachelor of Science in Mechanical or Aerospace Engineering 8 years of mechanical design engineering or engineering experience or an Advanced degree with 5 years of engineering experience. 5 years of experience with hardware, blueprints, dimensions & tolerances, or manufacturing methods including experience with GD&T.

Qualifications We Prefer Aircraft engine rotors or airfoils experience includes the design, development, manufacture, testing and/or maintenance of jet engine compressors or turbines. Proficiency in Teamcenter, Unigraphics NX, ANSYS, and classical methods of analysis.

Employee Scholar Program

Hot Section Engineering is responsible for the design, development, technology maturation and in service support of all diffuser cases, combustors, turbines (vanes, blades, rotors and cases), augmenters (military), nozzles and associated fuel systems for all military, commercial and industrial engine models and radial auxiliary power units.

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 role is: 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 on a regular basis. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility. This requisition is eligible for an employee referral award. ALL eligibility requirements must be met to receive the referral award.

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 195000 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.