Date Posted:
2025-08-08Country:
United States of AmericaLocation:
01: Building 01 Windsor Locks One Hamilton Road, Windsor Locks, CT, 06096 USAPosition Role Type:
OnsiteU.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-120.62Security Clearance:
None/Not RequiredWe are seeking a highly motivated Senior Engineer to join our System Integration organization, Systems Analysis group in Windsor Locks, CT. This position offers a unique opportunity for career growth and technical development in a collaborative and innovative environment, with the chance to contribute meaningfully to the advancement of next-generation aerospace systems.
As a Senior Engineer, you will focus on steady state and transient thermal fluids analysis, supporting the design and development of complex integrated air management systems. This role includes architecting system-level solutions, sizing components, developing advanced 0D/1D thermal fluid models, analyzing system performance, and defining system test plans.
You will play a key role in cross-disciplinary collaboration, working closely with customers, stakeholders, and subject matter experts to define and refine system and component-level requirements. Your work will involve breaking down and negotiating these requirements to ensure accurate representation of both steady state and transient thermal characteristics.
This position is ideal for someone looking to grow as a technical leader, develop deep subject matter expertise, and work on high-impact projects. The role requires the ability to operate independently and proactively in a dynamic, hands-on engineering environment.
What You Will Do
Under minimal direction, architect, size, and design thermal fluid systems for heating, cooling, and ventilation of aircraft.
Formulate conceptual designs of thermal fluid products and systems to meet customer requirements and achieve business objectives, with an emphasis on precise thermal management and system/component reliability.
Develop advanced mathematical models or other computational methods to create, evaluate, or modify designs in accordance with customer engineering requirements.
Perform system-level analyses of thermal fluid systems and prepare detailed technical reports summarizing findings and recommendations.
With some direction, create and implement common procedures and standard work across the organization to improve efficiency and consistency.
Collaborate with customers to establish specifications, perform analyses, and plan performance testing.
Analyze test results to ensure consistency with performance predictions and compliance with system requirements.
Qualifications You Must Have
Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience
Qualifications We Prefer
Bachelor’s or Master’s degree in Mechanical or Aerospace Engineering with a focus on systems analysis, thermal/fluid systems, or performance analysis.
3–5 years of experience in the Aerospace, Automotive, or Oil & Gas industry.
Experience working within a matrixed organization and demonstrated ability to collaborate effectively across disciplines and teams.
Experience in turbo machinery design, vapor cycle systems, or heat exchanger design.
Proficiency in reduced order modeling techniques for system-level simulations and trade studies.
Experience with using desktop simulation for requirement validation and verification.
Demonstrated expertise in modeling tools such as Dymola, Modelon Impact, MATLAB, and Simulink.
Programming experience with Python, and modeling languages such as Modelica or SysML.
Strong communication skills, with experience presenting technical results to both management and customers.
Proven experience in task planning, detail scheduling, and project execution in a technical environment.
What We Offer
Some of our competitive benefits package includes:
Medical, dental, and vision insurance
Three weeks of vacation for newly hired employees
Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
Tuition reimbursement program
Student Loan Repayment Program
Life insurance and disability coverage
Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
Birth, adoption, parental leave benefits
Ovia Health, fertility, and family planning
Adoption Assistance
Autism Benefit
Employee Assistance Plan, including up to 10 free counseling sessions
Healthy You Incentives, wellness rewards program
Doctor on Demand, virtual doctor visits
Bright Horizons, child and elder care services
Teladoc Medical Experts, second opinion program
And more!
Eligible for relocation
Learn More & Apply Now!
We make modern flight possible for millions of travelers and our military every second. Our major product lines are on-board virtually every aircraft flying. Be it keeping passengers safe with our emergency power generation systems or creating a positive in flight experience through reliable cabin pressure controls and quieter engines, Power & Controls focuses on delivering a best-in-class experience to our customers. We hire the top people in the industry. Their ideas drive our performance, and their integrity keeps our customers happy. Join us as we take flight!
*Please ensure the role type (defined below) is appropriate for your needs before applying to this role.
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.
At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.
Apply now and be part of the team that’s redefining aerospace, every day.
The salary range for this role is 82,000 USD - 164,000 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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