Principal Solutions Engineer - Aerospace & Defense

About us PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility.

Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive. Who We're Looking For You have spent your career inside aerospace and defense — in engineering programs, advanced development, or technical consulting and can hold a substantive conversation with a chief engineer or a VP. You are energized by the challenge of turning a customer relationship into a growing program — identifying what's next, building the coalition to get there, and then delivering it.

You understand how aircraft development, defense acquisition, and advanced manufacturing work: how decisions get made, where the hard problems live, and what matters to both leaders and working-level engineers. You have enough ML and data science depth to lead conversations with potential customers, work with technical experts to scope work, and lead cross-functional delivery teams. You know the simulation domain well, ideally with hands-on experience.

You communicate clearly and you read people well. You are highly self-directed: you determine your own priorities and own the follow-through. You may already have a visible presence in the A&D community — at technical conferences, in professional networks, or through published work.

If not, you're building it. You have 8+years of experience in A&D in commercial, product, program, or engineering roles. S.

export control laws and regulations, including the Export Administration Regulations (EAR) and the International Traffic in Arms Regulations (ITAR). S. export control laws and regulations without sponsorship for an export license.

This Role This is a high-profile leadership role in our US Delivery organization — with one foot in business development and one in execution. You will lead business development conversations with engineering and manufacturing leaders at A&D players — and close them. You’d own the commercial outcomes, the customer relationships, and the delivery results that follow.

Internally, this role is called a Delivery Engineer . In practice, this means: Driving new business development across A&D — proactively identifying and qualifying opportunities through your network, industry events, and via direct engagement with prospective customers Helping to shape our A&D go-to-market strategy — events, content, customer references, and relevant capabilities Leading initial proposal and discovery conversations with senior engineering/ manufacturing/ program leaders Leading proposal development and scoping in partnership with commercial stakeholders Leading delivery projects at enterprise customers: establishing and executing technical plans, overseeing teams, and keeping focus on customer outcomes and adoption Owning strategic relationships with senior customer stakeholders, creating and executing account plans, and driving customer retention and footprint expansion Synthesizing customer needs into actionable product feedback; working with the Product team to shape how the PX Platform evolves based on what you see in the field Maintaining a visible presence at major A&D industry events, building PhysicsX's reputation in the domain Traveling to customer sites and industry events, on average 1-2 weeks per month.