APU/TJ Engine System Software Principal Engineer P4 (Onsite)

Date Posted: 2026-08-18 Country: United States of America Location: US-FL-JUPITER-ADR ~ 17900 Beeline Hwy ~ ADR BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here. https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62 Security Clearance Type: None/Not Required Security Clearance Status: 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. What you Will Do: Controls and Diagnostic Systems is responsible for all aspects of Pratt & Whitney engine control and diagnostic system development including: requirements analysis & definition, system & software architecture, algorithm design, and product software design, verification & validation. We integrate the control and diagnostic system design across other engine system modules and with the air vehicles and provide support throughout the complete engine product life cycle. In this role, you will be supporting the Auxiliary Power Unit (APU) and Expendable Turbojet (TJ) business units. Job responsibilities include: Support control system integration across engine subsystems including FADEC (Full Authority Digital Engine Control), sensors, actuators, fuel systems, and electro-mechanical components. Develop, manage, and decompose system and subsystem requirements in accordance with ARP4754 guidelines. Own requirements lifecycle activities including authoring, allocation, traceability, validation, and verification. Support hardware selection, trade studies, and integration of sensors, effectors, and control system components. Apply Model-Based Systems Engineering (MBSE) using Cameo Systems Modeler. Translate control system requirements into Model-Based Design (MBD) implementations in MATLAB Simulink for software development. Develop and validate Simulink models for actuation systems (starter-generators, fuel systems, pneumatic systems). Up to 10% Travel What You Will Learn: This role will give you exposure to a wide variety of engineering challenges and you will be involved in a critical role for F135 and F119 along other commercial and military programs. The position is based at the P&W West Palm Beach facility and will report to the DPLM, Associate Director. Qualifications You Must Have: Bachelor’s degree in Science, Technology, Engineering or Mathematics (STEM) 8 years of engineering experience or 5 years with an advanced degree Qualifications We Prefer: Familiarity with gas turbine engine operation, control, and system integration. Experience in engine control system design and validation. Familiarity with MBSE tools such as Cameo Systems Modeler. Proficient in system/software design tools such as Cameo Systems Modeler and MATLAB Simulink. Experience in engine control input/output electrical interfaces. Experience in fuel and actuation architecture studies and system design. What We Offer: Benefits Relocation Assistance Learn More & Apply Now! Engine Design & Systems Integration (EDSI) Controls & Diagnostics Systems (CDS) CDS develops complex, cyber-resilient control systems and software for commercial and military engines including power and thermal management Systems and auxiliary power units. CDS also develops advanced diagnostic & health management systems to monitor our products, forecast events and help facilitate MRO operations. With growing emphasis on sustainability, CDS is on the forefront of system development for hybrid and electric propulsion. What is my role type? 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. Onsite : Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance workers, as they are essential to the development of our engines. 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. 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 107,500 USD - 204,500 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms