Boom Supersonic’s mission is to make the world dramatically more accessible through a renaissance in supersonic flight. Boom is developing the Symphony supersonic engine, which powers the Overture supersonic airliner and the Superpower natural gas turbine for AI. Overture will fly at twice the speed of today’s subsonic jets over water and 50% faster over land with Boomless Cruise.

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.

Senior Propulsion Engineer, Secondary Air Systems