Senior Principal Engineer - Lubrication Systems (Onsite)

Job ID: 01861669Posted: Posted YesterdayStart Date: 2026-08-20Location: US-CT-EAST HARTFORD-ETC ~ 400 Main St ~ BLDG ETCCountry: United States of AmericaTime Type: Full timeDate Posted:2026-08-20 Country:United States of America Location:US-CT-EAST HARTFORD-ETC ~ 400 Main St ~ BLDG ETC 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 RequiredAt 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 andinvestments 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.Pratt & Whitney is seeking a Senior Principal Engineer to join our Mechanical Systems, Externals, & Nacelles (MSEN) organization. In this role, you will serve as the technical authority for our engine lubrication system, providing technical leadership across requirements, system modeling, validation, risk retirement, and the development of a small engineering team.What You Will Do: Lead system-level requirements, interfaces, and performance assessments for engine lubrication systems, coordinating with analysis teams, component owners, and customers to allocate requirements, resolve interfaces, and maintain system compliance throughout the development lifecycle.Develop, execute, and validate steady-state and transient fluid-flow system models using Dymola, Easy5, MATLAB, Simulink, or comparable tools to evaluate system performance, support design decisions, and resolve technical issues across development and in-service engine programs.Lead a small technical team through the development and validation of new or upgraded lubrication systems, coordinating technical activities, design reviews, engine/test-rig validation, data analysis, and delivery of results in support of program milestones.Lead system-level risk identification, root-cause investigations, and technical problem resolution by analyzing engine and test data, executing system models, communicating findings, and driving mitigation strategies to closure.Serve as a senior technical authority and mentor by guiding engineers, improving analytical tools and methods, managing system status to requirements, and presenting technical findings and recommendations to engineering leadership, customers, and cross-functional teams.Travel Requirement: 10% (Domestic).What You Will Learn: Gain advanced experience in engine lubrication system architecture, requirements management, and system integration.Develop expertise in fluid-flow system modeling and simulation using Dymola, Easy5, MATLAB, and Simulink.Gain experience with engine and test-rig validation, test-data analysis, model correlation, and technical reporting.Strengthen technical leadership, mentoring, risk management, and cross-functional collaboration skills.Gain exposure to complex aerospace engine development programs, customer interactions, technical reviews, and next-generation propulsion technologies.Qualifications You Must Have: Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Systems Engineering, or a related field and 10 years of relevant engineering experience, or an advanced degree in a related field and 7 years of relevant engineering experience.Qualifications We Prefer: Master's degree or Ph.D. in Mechanical Engineering, Aerospace Engineering, Systems Engineering, or a related field.Experience with internal flow modeling, fluid systems, lubrication systems, or propulsion systems.Experience using Dymola, Easy5, MATLAB, Simulink, or comparable system-level modeling and simulation tools, including development and validation of component models.Excellent written and verbal communication skills, including experience presenting technical findings to engineering leadership, customers, and cross-functional teams.Demonstrated experience leading technical teams, projects, or complex engineering activities.Willingness to obtain a U.S. government-issued security clearance. What We Offer:Eligible for Relocation.Learn More & Apply Now!Mechanical Systems, Externals, & Nacelles (MSEN): The MSEN organization is responsible for the design, development, and in-service support of power transmission systems, bearing compartment and rotor support design and analysis, oil and thermal management systems, engine externals packaging and architecture, as well as nacelles for commercial and military engine models.Technical disciplines include Project Engineering, Mechanical Design, Structural Analysis, Product Definition, System Modeling, Mechanical Design analysis for bearings, gears, and seals, and fluid-thermal modeling of associated components and systems.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.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 132,400 USD - 251,600 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. 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