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 engine mechanical design team is at the heart of it. As a Mechanical Design Engineer, you'll work shoulder to shoulder with aircraft designers, systems leads, and test engineers to architect the mechanical systems of Symphony-from concept through certification. You'll design, optimize, and build the engine mechanical 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.