Senior Propulsion Engineer – Engine Secondary Air Systems

Start the Best Work of Your Career at Boom

At Boom, our remarkably small team built the groundbreaking XB-1 supersonic jet and designed the world's fastest airliner Overture. What made it possible? Exceptional people—driven, curious, and committed to building what’s never been built before.

Now, we’re applying that same approach to Symphony—the first jet engine purpose-built for sustainable supersonic flight. It will be the fastest development of a large-scale propulsion system in aviation history, and our systems performance team is at the heart of it.

As a Secondary Air Systems Engineer, you’ll work shoulder to shoulder with aircraft designers, systems leads, and test engineers to architect the way Symphony systems work—from concept through certification. You’ll design, optimize, and build the systems that make supersonic travel possible. And you’ll be there when it all comes together—when the Symphony prototype roars to life on the test stand this year, and takes flight just a few years from now.

If you’re the kind of engineer who chases understanding, thrives in the unknown, and gets energy from building what’s never been built—you’ll fit right in.

Role Overview

As part of the Propulsion Team, you will:

• Lead the Secondary Air Systems engineering for the Symphony turbofan engine
• Take ownership of the engine thermal management systems for secondary flows
• Provide inputs to a whole engine model, evaluate results, and recommend improvements
• Take on the big picture view of Symphony as a total system and be responsible for helping to integrate the needs of multiple disciplines such as aero, thermal, structure, and durability in the engine
• Develop and integrate toolchains and processes, including multi-disciplinary workflows and automation that fully integrate engine and propulsion analyses with airframe development
• Beyond these specific things, there are many opportunities to get involved in all aspects of Symphony engine development and Overture propulsion system integration, including fabrication and testing.  Bring your curiosity!

Ideal Candidate

• Bachelor’s or Master’s in Mechanical or Aerospace Engineering or related field
• Proficiency in Python or similar programming languages
• Significant experience as an engine secondary air systems engineer working on a turbofan architecture
• Demonstrated experience in developing whole engine 1D flow networks for gas turbines in software such as Altair/GE Flow Simulator, thermal desktop, etc.
• Experience in leading whole engine model creation and execution
• Experience in correlating engine test data to calibrate heat transfer models for whole engine modeling
• In-depth knowledge of different seal configurations applicable to modern turbofan architectures
• Ability to clearly think through and communicate coupled engine and aircraft system level interactions
• Ability to navigate through CAD to support module integration efforts in the engine
• Willingness to both speak and listen, to give opinions and receive opinions, to consider all the data and be part of building the team consensus to move forward

What Will Set You Apart

• Component or module ownership experience in a turbomachinery program or product
• Experience with secondary air systems architecture and past development programs for in-service turbomachinery
• Prior experience working with engine cycle analysis tools such as NPSS or PyCycle
• Supersonic jet engine design experience
• Part 33 commercial certification experience 
• Ability to dive deep into component-level design and analysis
• Background in developing design tools, methods or processes
• Testing and data-reduction experience
• Experience with Axstream or ADS turbomachinery software
• A strong desire to avoid bureaucracy and move fast in a dynamic environment

We’re hiring at multiple levels of experience—whether you’re early in your career or bring decades of design expertise, we’d love to hear from you.

Compensation

• P3 Level - Typically 5 - 10 years of experience - Base salary range: $107,000 – $135,000
• P4 Level - Typically 10 - 15 years of experience - Base salary range: $133,000 – $169,000
• P5 Level - Typically 15 + years of experience - Base salary range: $160,000 – $203,000

Actual compensation will vary based on factors including, but not limited to, location, experience, and performance. The range listed is just one component of Boom’s total rewards package. Other elements may include long-term incentives/equity, flexible PTO, and a suite of progressive benefits designed to support our employees’ well-being and growth.

There is no set deadline to apply for this job opportunity. Applications will be accepted on an ongoing basis until the search is no longer active.

ITAR Requirement

To conform to U.S. Government aerospace technology export regulations (ITAR and EAR), applicant must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about ITAR here.

Boom is an equal opportunity employer and we value diversity. All employment is decided on the basis of qualifications, merit and business need. 

Want to build a faster future? Come join Boom.