Principal Aerothermal Design Engineer (Onsite)

RTX; Windsor Locks (CT); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Competitive vacation allowance

401(k) plan with employer matching

Tuition reimbursement

Employee assistance program

Parental leave

Job summary

RTX’s Collins facility in Windsor Locks is seeking an experienced Aerothermal Design Engineer to lead turbomachinery aerothermal analyses across the product lifecycle. You will drive design decisions from concept through qualification and production while collaborating with multidisciplinary teams to achieve optimal performance.

The role requires deep technical judgment, familiarity with CFD and 3D CAD, and the ability to mentor junior engineers.

Qualifications

• Typically requires a STEM degree and minimum 8 years of relevant experience, or an advanced degree with 5 years of experience.
• U.S. citizenship is required for access to restricted information.
• Experience in aerospace, automotive, power generation, or manufacturing environments.

Responsibilities

• Execute, coordinate, and oversee all aspects of aerothermal design for turbomachinery.
• Support root cause investigations and develop innovative solutions to engineering challenges.
• Maintain and improve techniques for aerodynamic design of turbomachinery.
• Participate in multidisciplinary teams to achieve optimal performance.
• Support prototype and production development test activities.
• Identify opportunities to improve engineering processes, tools, and quality standards.
• Verify and validate compressor, turbine, and fan performance maps.
• Lead changes based on industry trends in turbomachinery.
• Share knowledge and mentor the next generation of engineers.

Skills

Aerothermal design

Turbomachinery analysis

3D CAD

CFD

Python

MATLAB

C++

Mechanical design

Education

STEM degree with 8+ years experience

Advanced degree with 5+ years experience

Tools

STAR-CCM+

ANSYS Fluent

ANSYS CFX

Unigraphics NX

Python

Job description

Date Posted:

2026-06-29

Country:

United States of America

Location:

US-CT-WINDSOR LOCKS-B1 ~ 1 Hamilton Rd ~ BLDG 1

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type:

DoD Clearance: Secret

Security Clearance Status:

Active and existing security clearance required after day 1

We are seeking an experienced Aerothermal Design Engineer to play a critical role in the design and development of high-performance systems where aerodynamics and thermal performance are essential to success. In this role, you will lead complex aerothermal analyses, apply advanced modeling and simulation techniques, and influence design decisions from earlyconceptthrough qualification and production.

You will collaborate closely with multidisciplinary engineering teams, bring deep technical judgment to challenging problems, and contribute to the advancement of next-generation technology. This position offers the opportunity to work on technically demanding programs, have a visible impact on system performance and reliability, and shape innovative solutions throughout the product lifecycle.

What You Will Do

• Execute, coordinate, and oversee all aspects of aerothermal design for turbomachinery
• Support root cause investigations and develop innovative solutions to complex engineering challenges
• Maintain, improve, and develop techniques, methods, and standards for the aerodynamic design of turbomachinery
• Participate in multidisciplinary teams engaged in the design and development of new technologies and system architectures to achieve optimal performance
• Support prototype and production development test activities
• Identify opportunities and establish strategies to improve engineering processes, tools, technologies, and quality control standards
• Perform verification and validation of compressor, turbine, and fan performance maps for relevant applications
• Lead the implementation of changes based on analysis of industry trends and developments in turbomachinery
• Share knowledge, mentor, and help develop the next generation of engineers

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience
• U.S. citizenship only (dual citizenship not permitted) is required, as access to information under this program/contract is restricted to individuals with sole U.S. citizenship.
• Prior engineering experience within aerospace, automotive, power generation or manufacturing environments.

Qualifications We Prefer

• Proficient in 3D CAD modeling applications such as Unigraphics NX or similar
• Skilled in 1D meanline sizing of turbomachinery
• Experienced in 3D blading of centrifugal compressors, radial inflow turbines, and axial fans
• Capable of characterizing turbomachinery performance in a laboratory environment
• Able to use commercial CFD software such as STAR-CCM+, ANSYS Fluent, or ANSYS CFX for turbomachinery design
• Knowledgeable in basic programming using common languages (e.g., Python, MATLAB, C++)
• Understanding of mechanical design principles, including strength analysis and material behavior

What We Offer

Some of our competitive benefitspackage 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 youcan buy pet insurance, home and auto insurance,additionallife and accident insurance,critical illnessinsurance, 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,childand elder care services
• Teladoc Medical Experts, second opinion program
• And more!

We make modernflightpossible for millions of travelers and our military every second. Our major product lines areon-boardvirtually everyaircraftflying. Be it keeping passengers safe with our emergency power generation systems or creating a positivein flightexperience through reliable cabin pressure controls and quieter engines, Power & Controls focuses on deliveringa best-in-class experience to our customers. We hire the top people in the industry. Their ideas drive our performance, and their integritykeepsour 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.

At Collins, the paths we pave together lead to limitlesspossibility. And the bonds we form - with our customers and with each other - propel us all higher,again and again.

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.

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