Aero Thermal Fluids Engineer I (Onsite)

Date Posted:

2026-03-16

Country:

United States of America

Location:

US-IL-ROCKFORD-P6 ~ 4747 Harrison Ave ~ 4747 HARRISON AVE-P6

Position Role Type:

Onsite

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

Security Clearance Type:

None/Not Required

Security Clearance Status:

Not Required

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops, and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. 

Looking for the right runway for your career to take flight? Consider joining us here at Collins Aerospace, where we’re working side-by-side with customers on exciting industry possibilities. With a comprehensive portfolio, extensive capabilities and broad expertise, we’re crafting intelligent solutions to meet the demands of a rapidly evolving global market – all representing the best in innovation and technology for the industries we serve across commercial, business, space, and military and defense aviation.

With 68,000 employees across 46 countries around the world, we offer an extensive flight list of opportunities to explore the depth of our organization. We offer flexible work options to meet your needs by offering on-site, hybrid and remote roles. Join us and help build a more advanced, more autonomous, more connected, more electric and more sustainable future!

We are looking for a new entry-level engineer to join our team! The identified candidate will be involved in all aspects of the product thermal design. This role is in Rockford, Illinois. This role may be eligible for relocation.

What You Will Do:

• You will be a part of the execution of analysis and thermal design of key components (e.g., motor drives, converters) and subassemblies (e.g., transitions and diodes, inductors and transformers, printed wiring boards) within highly integrated Electronic Power Systems.
• You will have projects that include transient and steady state thermal analyses of of liquid and forced air cooled power electronics and natural convection cooled control electronics.
• You will be using computational fluid dynamics (CFD) software and internally developed tools for these analyses.
• You will perform thermal data analysis from development and qualification testing.
• You will formally document analysis methods/results as well as test results.
• You will communicate with parties within and outside of own team to explain facts, policies and practices related to work area, influencing decision-makers with recommended courses of action.

What You Will Learn:

• You will gain exposure to aerothermal fluid structural analysis methodologies and processes within the aerospace industry.
• You will learn data-model analysis correlation.
• You will learn technical document writing.
• You will learn how to do customer communication and support.

Qualifications You Must Have:

• Requires a Bachelor’s degree and 12 months or less of relevant professional work experience (excluding internships).
• U.S. Person (U.S. citizen, permanent resident, or granted refugee or asylee status) as defined here: https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62.

Qualifications We Prefer:

• Degree in Mechanical/Aerospace/Aero-Astro.
• Course work in Thermodynamics and Fluid dynamics.
• Experience with Ansys IcePak.
• Experience with Mechanical Computer Aided Design (CAD) software.

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!  

Learn More and Apply Now!

Collins Aerospace, a Raytheon Technologies company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market.

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!

Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market.

WE ARE REDEFINING AEROSPACE.

* Please consider the following role type definition as you apply for 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.

Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings.

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.

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 57,200 USD - 108,800 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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