Mission Engineer II

The role

You will lead programs across commercial, defense, and space microreactor missions. You will serve as a technical point of contact for customers and drive the development, deployment, and application of Antares systems.

What you will do

• Lead execution of customer-facing and customer-funded R&D programs.
• Manage program costs, schedules, quality, and deliverables.
• Translate customer needs into technical requirements.
• Drive product development for transport, deployment, and operation.
• Own mission-level product integration across the R1 lifecycle.
• Perform first-principles analyses across disciplines.
• Ideate and develop new applications and customer missions.
• Lead and contribute to system architecture and technical trade studies.

Required qualifications

• Bachelor's degree in an engineering discipline (mechanical, electrical, aerospace, nuclear, systems, etc.), physics, or applied science.
• Exceptional technical writing and communication skills.
• 3+ years of experience developing or delivering technically complex systems in aerospace, nuclear, energy, automotive, defense, or another mission- or safety-critical environment.
• Demonstrated ownership of multidisciplinary technical problems and program cost/schedule/technical performance.
• Ability to travel to customer and mission-relevant locations as needed.

Nice to have

• Master’s degree or PhD in an engineering field.
• Proficiency in Python for numerical/multiphysics work and familiarity with modern toolchains (Git and CI/CD).
• Strong foundations in thermodynamics, heat transfer, fluid mechanics, energy conversion and power systems, and engineering economics.
• Experience developing, integrating, testing, or commissioning complex hardware or energy systems.
• Experience with mission engineering, CONOPS development, system architecture, modeling and simulation, and trade studies.
• Experience across one or more adjacent technical domains such as high-temperature systems, turbomachinery, materials and composites, power systems, nuclear, or aerospace.
• Experience with government sponsors (DoD, DOE, NASA, USAF/USSF) and government-funded R&D, proposals, or contracting.
• Strong interpersonal and collaborative skills.
• Ability to drive decisions and close ambiguous cross-functional problems.
• Experience working in a start-up environment.

About the company

Antares is building mass-producible, inherently safe, deployable microreactors to make clean energy abundant. The team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, and other organizations.