Principal Scientist - Permanent Magnets

About SandboxAQ

SandboxAQ is a high-growth company delivering AI solutions that address some of the world's greatest challenges. The company’s Large Quantitative Models (LQMs) power advances in life sciences, financial services, navigation, cybersecurity, and other sectors.

We are a global team that is tech-focused and includes experts in AI, chemistry, cybersecurity, physics, mathematics, medicine, engineering, and other specialties. The company emerged from Alphabet Inc. as an independent, growth capital-backed company in 2022, funded by leading investors and supported by a braintrust of industry leaders.

At SandboxAQ, we’ve cultivated an environment that encourages creativity, collaboration, and impact. By investing deeply in our people, we’re building a thriving, global workforce poised to tackle the world's epic challenges. Join us to advance your career in pursuit of an inspiring mission, in a community of like-minded people who value entrepreneurialism, ownership, and transformative impact.

The Opportunity

Introduction to the team: The Magnets team is one of several key research verticals within SandboxAQ’s broader Chemical Simulation group, which uses advanced computational methods, physics-based simulation, and AI to discover and develop novel materials. This group is focused on solving critical materials challenges that matter to U.S. semiconductor manufacturing and industrial resilience.

Within that larger effort, this group is focused on one of the most strategically important materials problems: developing high-performance permanent magnets that reduce or eliminate reliance on neodymium and other rare earth elements and can be produced in the United States. The goal is to create novel magnet formulations that can be manufactured using existing industry processes and equipment, while matching or exceeding the performance of today’s leading NdFeB magnets in demanding applications such as semiconductor equipment, vacuum systems, precision motion devices, and defense technologies.

Introduction to the role: We are looking for a Principal Scientist to lead the scientific direction of the Magnets vertical. This person will define the research strategy and technical roadmap, build and lead a top-tier scientific team, and help shape how computational materials discovery, simulation, and AI are applied to accelerate magnet development.

This leader will work at the intersection of domain science and platform innovation. You will help shape the magnetism-aware LQM and multi-scale modeling strategy in close partnership with our AI simulation platform teams, while also guiding dataset strategy, modeling priorities, and experimental validation to turn cutting-edge research into practical, manufacturable magnet technologies.

You will also serve as a key external scientific representative for the program, working with national labs, manufacturing partners, defense organizations, and equipment companies.

See how SandboxAQ is helping build America's semiconductor supply chain from the materials up.

Key Responsibilities

• Own the scientific charter and technical roadmap for the Magnets vertical, including phase stability, magnetocrystalline anisotropy, finite-temperature coercivity, and microstructure engineering across Fe- and Co-based intermetallic systems with U.S.-accessible alloying elements.

• IP Engine Management: Oversee the translation of generative design outputs into a robust IP portfolio, ensuring the team owns the most valuable "white space" in substrate chemistry and structural design.

• Build, lead, and mentor a multidisciplinary team of research scientists, computational/ML scientists, and postdocs; set the scientific bar, run technical reviews, and develop talent toward NewCo readiness.

• Specify and prioritize the magnetism-aware LQM, datageneration, and multi-scale modeling capabilities required from the AISim platform; serve as the senior scientific counterpart to Platform Engineering and DataGen Research for this vertical.

• Lead scientific engagement with national lab and industrial partners (e.g., NHMFL, domestic magnet producers, ASML, defense primes), translating partner constraints into well-posed scientific problems and delivering partner-grade results.

• Architect the feedback loops between computational modeling and experimental lab validation to accelerate the Design-Build-Test-Learn (DBTL) cycle.

• Work closely with the commercial team to identify buyers for our novel IP, structuring high-value licensing agreements and co-development partnerships.

• Author the external scientific narrative of the vertical for quarterly updates, peer-reviewed publications, conferences, and prospective NewCo investors; protect scientific rigor and IP integrity throughout.

Essential Skills & Experience

• PhD in Materials Science, Physics, Chemistry, or a related discipline, with deep specialization in magnetism, intermetallics, or hard magnetic materials.

• 7+ years of post-PhD experience leading scientific programs in magnetic materials, including significant industrial or national-lab leadership at the principal scientist, fellow, or director level.

• Demonstrated ability to translate first-principles, multi-scale, and ML-driven modeling into manufacturable magnet formulations, including coupling to powder metallurgy, sintering, and heat-treatment processes.

• Track record of building and leading multidisciplinary scientific teams and shaping research roadmaps that deliver against external commitments (industrial, government, or both).

• Outstanding external scientific presence: publication and patent record, ability to represent the work to senior government, defense, and industrial audiences.

Highly Desired Skills & Experience

• Hands-on experience with Fe-N, Mn-based, Sm-Co, or other rare-earth-lean permanent magnet systems and their bulk processing challenges.

• Familiarity with applications in lithography stages, vacuum pumps, precision actuators, or defense platforms (fighter jets, drones, submarines).

• Experience operating within CHIPS Act, DOD, DOE, or other federally funded R&D programs, including export-control and IP considerations.

• Prior involvement in NewCo formation, IP licensing, or scaling research IP into commercial manufacturing operations.

• Demonstrated track record of taking permanent magnet materials from concept through scale-up, qualification, and transfer into pilot or commercial manufacturing environments.

• Proven ability to translate system-level application requirements such as force density, thermal operating envelope, demagnetization margin, vacuum compatibility, and reliability into composition, processing, and microstructure targets for simulation platform.

Why Join Us?

We offer competitive compensation, a comprehensive benefits package, and opportunities for professional growth.

• Compensation: Competitive base salary commensurate with experience, plus equity and performance-based incentives.

• Benefits: Comprehensive health, dental, and vision insurance; 401(k) with company match; generous parental leave.

• Work-Life Balance: Flexible hybrid work arrangements, generous PTO, and a culture that respects focus time and recovery.

• Career Development: Direct exposure to CHIPS Act-funded programs, senior scientific and executive leadership, mentorship, and dedicated learning budgets to support continued growth.

SandboxAQ Welcomes All

We are committed to fostering a culture of belonging and respect, where diverse perspectives are actively sought and valued. Our multidisciplinary environment provides ample opportunity for continuous growth - working alongside humble, empowered, and ambitious colleagues ready to tackle epic challenges.

Equal Employment Opportunity: All qualified applicants will receive consideration regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status.

Accommodations: We provide reasonable accommodations for individuals with disabilities in job application procedures for open roles. If you need such an accommodation, please let a member of our Recruiting team know.

Read: Guidance for candidates on using AI Tools in interviews