Propulsion System Design Engineer Jobs in Belleville, IL

At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

Boeing Defense, Space & Security (BDS) is hiring an Associate or Experienced Propulsion Engineer to perform propulsion system qualification support and analysis in the St. Louis, MO region!

The statement of work will include new product design, development and integration projects in the areas of Fixed Wing Aircraft. Propulsion engineers are essential to the development, safety and success of our products and solutions. Each day, they go above and beyond to meet our customers’ overall mission requirements—from initial vehicle concept definition through design, test, validation and in-service support. Your expertise in areas such propulsion analysis, design, testing, or certification will drive the future of aerospace.

The Flight Systems Engineering Capability is an exciting organization in Boeing Defense, Space & Security responsible for performing Flight Engineering across a large portfolio of products and development programs. Product areas within the Flight Systems Capability in the St. Louis/St. Charles region include Fighter Aircraft, Unmanned Aircraft, and Missiles/Weapons Systems. The set of specialized capabilities and skills maintained by our teammates are the foundation of what defines the majority of our Boeing products; things that FLY! The St. Louis region is continuing to grow, and Flight Engineering is looking for motivated, talented engineers to join the Boeing team on the exciting programs located in this region. Selected candidates will work a wide range of programs that will require design, analysis and testing in Flight disciplines to meet our customers requirements.

Join our team and become a Flight Engineer with unmatched opportunity and potential; you’ll be supported to develop and maintain specialized skills that may be applied across multiple product domains. You’ll benefit from exposure to a variety of unique and challenging projects, and collaborate closely with other engineering disciplines and industry experts. Boeing is the worlds largest aerospace company. We are engineers and technicians. Skilled scientists and thinkers. Bold innovators and dreamers. Join us, and you can build something better for yourself, for our customers and for the world.

• Perform propulsion system support and analysis, as part of a larger flight science team
• Define requirements for propulsion systems, auxiliary power systems and air breathing systems.
• Define, coordinate and control the functional and physical interfaces between the propulsion system and vehicle.
• Develop specifications and architectural and configuration concepts for associated vehicle systems to meet customer and regulatory requirements.
• Configure/design propulsion sub-systems and components to meet all vehicle design and performance criteria.
• Use various testing, analysis, modeling and simulation tools to estimate or calculate system performance.
• Support definition and performance of certification tests for propulsion sub-systems and components.
• Review, processing and approval of engine and component qualification documentation
• Assist with propulsion ground and flight test planning
• Develop concepts for future propulsion systems to meet anticipated requirements.
• Vendor management and coordination

• Bachelor of Science degree in Engineering, Engineering Technology (including Manufacturing Technology), Computer Science, Data Science, Mathematics, Physics, Chemistry or non-US equivalent qualifications directly related to the work statement
• 2+ years work-related experience with a Bachelors degree OR an equivalent combination of work-related experience and technical education.
• Willing to travel at least 10% of the time

• (Level 3) 5+ years work-related experience with a Bachelors degree OR an equivalent combination of work-related experience and technical education.
• Active Secret or Top Secret Clearance
• Propulsion ground and flight test experience
• Experience with jet engines and/or air breathing propulsion operation fundamentals
• Propulsion analysis, integration design, system installation, or support experience
• Propulsion system certification or qualification experience
• 3D modelling, NX, Unigraphics

Successful candidates for this job must satisfy the Companys Conflict of Interest (COI) assessment process.

Boeing is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Help you save for your future, with contributions from Boeing that can help you grow your retirement savings. Our best-in-class retirement benefit features:

• Best in class 401(k) plan: well match your contributions dollar for dollar, up to 10% of eligible pay with Immediate 100% vesting
• Student Loan Match: The Boeing 401(k) Student Loan Match allows eligible enrolled U.S. employees to have their qualified student loan debt payments counted, along with any match-eligible contributions they make, for purposes of determining the Company Match to employees Boeing 401(k) accounts.

At Boeing, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.

The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements.

Pay is based upon candidate experience and qualifications, as well as market and business considerations.

Level 2: $91,800 - $124,200

Level 3: $112,200 - $151,800

Applications for this position will be accepted until Aug. 27, 2026

This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a “U.S. Person” as defined by 22 C.F.R. §120.62 is required. “U.S. Person” includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee.

US based job, US Person required

Bachelors Degree or Equivalent Required

This position offers relocation based on candidate eligibility.

This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim U.S. Secret Clearance Pre-Start and final U.S. Secret Clearance Post-Start is required. This position requires ability to obtain program access, for which the U.S. Government requires U.S. Citizenship only.

Employer will not sponsor applicants for employment visa status.

This position is for 1st shift

Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.