Senior Scientist Jobs

About The Position

Requirements

• Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation
• 3+ years of relevant experience with plasma systems, advanced laboratory environments, high-vacuum systems, pulsed-power systems, or complex experimental hardware
• Hands-on experience designing, building, calibrating, troubleshooting, or operating plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems
• Demonstrated ability to independently lead complex technical workstreams while collaborating with cross-functional stakeholders across science and engineering teams

Responsibilities

• Lead the design, build, deployment, calibration, and commissioning of plasma diagnostic systems for Helion’s fusion generators, with guidance from senior technical leadership on broader priorities and roadmap alignment
• Serve as a go-to technical contributor for a defined diagnostics scope, helping evaluate plasma parameters such as density, temperature, current profiles, and other key performance indicators
• Partner cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to align diagnostic capabilities with experimental and operational needs
• Develop foundational expertise in pre-ionization plasma diagnostics, establishing best practices and internal methodologies that inform next-generation fusion device development optimized for energy gain and power conversion
• Analyze diagnostic data in real time to extract actionable insights about plasma behavior, inform operational tuning, and identify opportunities for performance optimization and system redesign
• Contribute to best practices, documentation, and internal methods for plasma diagnostics, helping improve consistency, reliability, and scalability across Helion’s experimental programs

Benefits

• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend