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

Boom Supersonic is building the breakthrough Overture supersonic airliner and the Superpower natural gas turbine — machines that push the boundaries of physics, manufacturing, and industrial ambition.

But aircraft and engines don't build themselves. The single most important variable in our success is a world-class team — people who are unusually talented, unusually driven, and willing to do what others won't even attempt.

That's where you come in.

Not a traditional engineering job

As a Propulsion Engineer on Engine Cooling & Air Systems at Boom, you won't be executing prescribed analysis tasks within a rigid framework set in stone decades ago.

You'll join our Secondary Air Systems (SAS) team as a thermal-fluids analyst, bringing your craft in heat transfer, internal aerodynamics, compressible flow, mechanical design, or structural analysis — and growing into the SAS discipline itself under senior engineers who will mentor you.

Secondary Air Systems is one of the highest-leverage disciplines in a modern engine — it touches cooling, sealing, thrust loads, bearing life, and hot-section durability. It's also a discipline that's notoriously hard to find pre-trained talent for. That's why we're hiring differently for this role.

We're not requiring existing SAS experience. What we are looking for is strong adjacent expertise — thermal analysis, internal aerodynamics, compressible flow, mechanical or structural design, or analysis tool creation — plus intense curiosity, learning aptitude, and the willingness to absorb the SAS discipline from the senior engineers who will mentor you. Bring your craft and your appetite to learn; we'll teach you SAS.

You'll be part of a small, high-performance propulsion engineering team responsible for building one of the most ambitious hardware companies of this century. You'll be part of inventing a new 21st century engine manufacturer from the ground up, one that is built on modern tooling and a bias toward action.

You won't be a cog in a machine. You'll be a trusted contributor doing real analysis work on a real engine — the Symphony turbofan that will power the Overture supersonic airliner — surrounded by senior engineers who will mentor your growth into deeper ownership.

As part of the Propulsion Team, you will:

Take ownership of the Secondary Air Systems engineering for the Superpower gas turbine engine
Be responsible for 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 Superpower 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 the Superpower engine development, 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
Drive to develop an expertise in engine secondary air systems engineering working on a turbofan architecture
Ability to navigate through CAD to support module integration efforts in the engine
Background in developing design tools, methods or processes
Testing and data-reduction experience
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 in 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 or gas turbine engine architectures
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
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

P2 Level - Typically 0 - 5 years of experience - Base salary range: $85,000 – $105,000
P3 Level - Typically 5 - 10 years of experience - Base salary range: $105,000 – $130,000
P4 Level - Typically 10 - 15 years of experience - Base salary range: $130,000 – $170,000

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.

The mission

Engineering roles at Boom are unlike anything else in aerospace or energy: designing a supersonic airliner from first principles, developing advanced propulsion systems, scaling complex hardware programs in a modern manufacturing environment, and building breakthrough industrial turbines to power the next generation of AI data centers.

These aren't jobs. They are career-defining opportunities. Some may even find their calling.

This job is demanding and rewarding

At some companies, you can choose to work long, smart, or hard. At Boom, you'll be doing all three.

You'll move with urgency. You'll manage ambiguity. You'll operate at a high standard. And your work will be visible to company leadership, including the founder. If you want a comfortable engineering role where you run processes and rely on executing procedures defined long ago, look elsewhere.

If you want to be part of a team that could be remembered a century from now, keep reading.

The primary reward of this role is the work itself: partnering with extraordinary people to design and build breakthrough machines. You'll also be well compensated, with competitive cash compensation and meaningful equity grants with significant upside. This is a chance to build more than a product. It's a chance to build a company that history will remember.

Why Boom

Boom is building one of the most ambitious industrial programs of this century. The work is hard, the pace is fast, and the expectations are high.

In return, you'll get real ownership, the chance to work with exceptional teammates, and the opportunity to help build a product line capable of powering the future of supersonic flight and next-generation energy systems.

If this excites you, click apply and let us know why you're excited.

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.

Propulsion Engineer, Engine Cooling & Air Systems