Top 4 Principal experimental scientist Jobs in Arlington, Wa

Principal Experimental Scientist
Helion —Everett, WA
- $230,000 - $270,000 a year
- Full-time
- Data analysis skills
- System design
- Office
- Paid parental leave
- Paid holidays
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Principal Experimental Scientist - RF
Helion —Everett, WA
- $230,000 - $270,000 a year
- Full-time
- System design
- Doctor of Philosophy
- Senior level
- Paid parental leave
- Paid holidays
Quick Apply
Principal Plasma Data Scientist
Helion —Everett, WA
- $230,000 - $270,000 a year
- Full-time
- Office
- Analysis skills
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
Quick Apply
Principal Electrical Engineer - RF
Helion —Everett, WA
- $235,000 - $270,000 a year
- Full-time
- System design
- Office
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
Quick Apply

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Principal Experimental Scientist

Helion -
Everett, WA

Quick Apply

Job Details

Full-time
$230,000 - $270,000 a year

Benefits

Paid parental leave
Paid holidays
Disability insurance
Health insurance
Dental insurance
Paid time off
Parental leave
401(k) 5% Match
Vision insurance
401(k) matching
Life insurance

Qualifications

Doctor of Philosophy
Spectroscopic analysis
Experience in a research and development laboratory environment

Full Job Description

About Helion

We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.

Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.

This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.

What You Will Be Doing:

We are looking for a Principal Experimental Plasma Scientist to lead the plasma diagnostic effort of Helion's fusion generators. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.

You Will:

Own the end-to-end design and deployment of a comprehensive suite of plasma diagnostics, collaborating closely with physicists, engineers, designers, and data analysts to ensure robust, scalable instrumentation that meets both experimental and operational requirements
Integrate cross-disciplinary technical input from experts across Helion—including plasma physics, machine operations, controls, and data science—to align diagnostic capabilities with real-time operational needs and long-term scientific milestones
Lead the hands-on execution of assembly, installation, calibration, and commissioning processes for diagnostics across multiple campaigns and testbeds. Ensure high data fidelity through rigorous validation and alignment procedures
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
Partners with leadership across the organization, contributing to strategic planning, roadmap development, and long-term technical vision

Required Skills:

Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation
10+ years of experience working in advanced laboratory environments, with extensive hands-on work involving plasma generation, plasma systems, and UHV vacuum infrastructure
Demonstrated track record using diagnostic measurements (e.g., interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics) to evaluate plasma parameters such as density, temperature, and current profiles, directly influencing system improvements
Deep expertise and unique domain knowledge in multiple areas of plasma diagnostics and fusion engineering. Recognized as a subject matter expert who operates independently

Benefits

Our total compensation package includes benefits, including but not limited to:

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

Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.

Compensation Range: $230K - $270K

Quick Apply

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principal experimental scientist jobs in arlington, wa

Principal Experimental Scientist

Principal Experimental Scientist - RF

Principal Plasma Data Scientist

Principal Electrical Engineer - RF

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