---
title: 'Electrical Engineer at Hexium'
canonical: 'https://feeny.ai/job/electrical-engineer-hexium-austin-cs84rrjnt05j'
type: 'job'
last_seen: '2026-10-21'
---

# Electrical Engineer at Hexium

- **Company:** Hexium
- **Location:** Austin, TX
- **Posted:** 2026-10-20
- **Last confirmed live:** 2026-10-21
- **Apply:** https://job-boards.greenhouse.io/hexium/jobs/4459827009

## Job description

Hexium is modernizing Atomic Vapor Laser Isotope Separation (AVLIS) into a scalable industrial technology for domestic isotope production. We are designing and building complex systems combining high-power lasers, electro-optics, precision controls, instrumentation, and custom electronics.

Our engineers work directly on the hardware, from initial design and prototyping through integration and testing. As an Electrical Engineer, you'll build systems that are central to Hexium’s technology and to critical U.S. energy and national-security supply chains.

## Role

We're looking for an Electrical Engineer to design, build, and test the power electronics, power supplies, and control hardware behind our laser and separation technology, including high-temperature and induction heating hardware. This is a hands-on, iterative design role within our Technology Development group, with a focus on developing reliable, multi-kilowatt power systems for complex experimental environments. Beyond power systems, you’ll contribute to instrumentation, diagnostics, and lab controls work across the company.

The ideal candidate has practical experience designing and testing power electronics. They’re comfortable around high-voltage hardware and enjoy solving hard problems through hands-on experimentation and close collaboration with scientists and mechanical engineers.

## Key Responsibilities

- Design, build, and test power electronics and power supplies, including inverters and their control and protection circuitry
- Iterate hardware from bench-scale prototypes to robust, multi-kilowatt lab systems
- Develop control, feedback, and safety interlock systems for power and thermal processes
- Evaluate, specify, and integrate commercial power equipment alongside in-house designs
- Contribute to instrumentation and diagnostics projects, including sensor signal conditioning and data acquisition (DAQ)
- Own the hardware development cycle: schematic capture, PCB layout, prototyping, bench testing, and iteration
- Work directly with scientists and mechanical engineers to turn requirements into working hardware
- Support installation, commissioning, and troubleshooting of electrical and control hardware

Required Qualifications

- Bachelor’s Degree in Electrical Engineering or a closely related field (e.g., Engineering Physics, Computer Engineering)
- 3+ years of hands-on electrical hardware design experience
- Hands-on design and test experience in power electronics (inverters, motor drives, power supplies, induction heating)
- Experience with schematic capture and PCB design (Altium, KiCad, Allegro, or similar) and circuit simulation (SPICE, PLECS, or similar)
- Confident with lab test equipment (oscilloscopes, differential and current probes, power analyzers) and with iterative, trial-and-error hardware development
- Able to work safely with high-voltage equipment
- Able to work on-site in Austin, TX
- Candidates must be eligible to obtain and maintain a DOE Q-level security clearance
- This role will be exposed to export-controlled information and requires compliance with applicable export control laws and regulations

## Preferred Qualifications

- 5+ years of hands-on electrical hardware design experience
- Experience with induction heating or resonant power converters (series/parallel resonant, LLC, soft switching)
- Experience with IGBT or SiC MOSFET power stages, gate drivers, magnetics design (Litz wire, matching transformers), and water-cooled power hardware
- Electromagnetic or thermal simulation (COMSOL, ANSYS Maxwell, or similar) for coil and load design
- Low-noise analog design: transimpedance or charge amplifiers, lock-in amplifiers, or ion detection and spectrometry electronics
- High-temperature measurement and control (thermocouples, pyrometers, closed-loop temperature control)
- Embedded or lab control experience (microcontrollers, PLCs, LabVIEW, or Python for DAQ)
- Background in a national lab, university research group, or hardware startup
- Currently holds an active DOE Q or DoD TS clearance

Physical Requirements

- Extended periods at a lab bench performing fine-motor tasks (soldering, board assembly, probing) requiring sustained hand-eye coordination and dexterity
- Ability to work near energized high-power and high-temperature equipment and in laser-controlled areas under lab safety protocols (may require laser safety training/certification and PPE use)
- Occasional lifting/carrying of test equipment up to 30 lbs
- Frequent close-vision work (component-level inspection, microscope/magnification use)

Work Environment

On-site role based in Austin, TX. Primarily lab-based, split between electronics benches, high-power test areas, and a controlled laser lab. This is an on-site, hands-on role with limited remote flexibility given the equipment and hardware dependencies. Work in laser-controlled areas requires lab safety training (LSO-administered), and high-power work follows Hexium’s electrical safety procedures.

## Benefits

- Stock Options
- Paid Time Off
- 401(k) Matching
- Medical, Dental, Vision insurance
- HSA & FSAs

E-Verify: Hexium Inc. participates in E-Verify. All new hires are required to complete the I-9 employment eligibility verification form and provide documentation to confirm their identity and authorization to work in the United States.

Screening: Employment is contingent upon successful completion of a background check.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job.

Hexium Inc. is an Equal Employment Opportunity Employer. We provide equal employment opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Hexium Inc. is committed to ensuring equal access and providing reasonable accommodations for applicants and employees with disabilities upon request. If reasonable accommodation is needed to participate in the job application or interview process,  please contact Hexium’s Human Resources at HR@hexium.com.

## About Hexium

## Company Overview
- **One-liner**: Hexium is modernizing isotope enrichment technology using Atomic Vapor Laser Isotope Separation (AVLIS) to produce critical isotopes for advanced nuclear energy, fusion, and medical applications, starting with lithium-6 and lithium-7.
- **Entity Type**: Private (Seed stage)
- **Headquarters**: Austin, Texas, United States
- **Founded**: 2023
- **Founders**: Charlie Jarrott (Co-Founder & CEO), Martin Griswold (CTO & Co-Founder)

## Core Business
- **Primary industry**: Advanced Manufacturing / Nuclear Energy / Isotope Enrichment
- **Target customers**: Advanced fission and fusion reactor developers, nuclear medicine producers, and industrial isotope users (B2B)
- **Mission statement**: Enable the nuclear technologies that will power a cleaner, safer, more resilient future.

## Products & Services
- **AVLIS Technology Platform**: A reinvented form of Atomic Vapor Laser Isotope Separation that uses laser-driven ionization and electric sorting to separate isotopes with unmatched precision. The process eliminates centrifuges and chemicals, produces no hazardous waste, and has the smallest commercial-scale footprint in the industry.
- **Lithium-6 (Li-6) Enrichment**: Production of lithium-6, a critical isotope for tritium breeding in fusion reactors and advanced fission systems.
- **Lithium-7 (Li-7) Enrichment**: Production of lithium-7, used as a pH control agent in pressurized water nuclear reactors and for other industrial applications.
- **Future Isotope Production**: The AVLIS platform is adaptable to produce other globally bottlenecked isotopes for clean energy, nuclear medicine, and advanced industrial applications.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (Private company)
- **Total Funding**: USD $33.0 million (as of 2026)
- **Funding History**:
  - Seed Round (2024-07-01): USD $8.0M (led by MaC Venture Capital, Refactor)
  - Debt Financing (2025-04-01): USD $2.5M
  - Seed Round (2025-04-01): USD $9.5M (6 investors)
  - Funding Round (2025-08-21): USD $13.0M
  - Loan (2026): USD $4.0M
- **Notable Investors**: MaC Venture Capital, Refactor Capital, R7, Overture VC, Julian Capital, Humba Ventures, and others
- **Key Partners**: Lawrence Livermore National Laboratory, TerraPower, Oklo Inc., MPR Associates, Inc.
- **Growth Signals**: 
  - Headcount growth of +88.9% year-over-year (now 12 employees)
  - Active collaboration with top national lab (LLNL) and leading advanced nuclear companies
  - With over $2B invested by the Department of Energy, the underlying AVLIS technology has been de-risked at pilot scale

## Competitive Advantages
- **Proven, De-Risked Technology**: The AVLIS approach was developed and validated at pilot scale with over $2B in DOE investment, now being modernized for industrial deployment.
- **Unmatched Precision**: Industry-leading selectivity enables single-pass production of materials at both high purity and lower enrichment levels compared to traditional methods.
- **No Centrifuges or Chemicals**: Eliminates complex mechanical and chemical separation methods, avoids costly separation agents, and produces no hazardous waste — a clean and scalable approach.
- **Small Footprint, Quick Scalability**: The smallest commercial-scale footprint in the industry that can be rapidly scaled to meet growing demand.
- **Domestic Supply Chain Focus**: Building a reliable, secure domestic supply of critical isotopes for US energy and medical independence.
- **Patent-Pending Technology**: Optimizes production output while leveraging existing supply chain infrastructure and modern laser designs.

## Strategic Focus
- Industrial-scale deployment of AVLIS technology for lithium-6 and lithium-7 production to fuel the nuclear renaissance
- Expanding isotope production capabilities to other bottlenecked isotopes for energy, medicine, and industry
- Scaling the team with scientists and engineers across laser physics, plasma physics, nuclear engineering, electrical engineering, and manufacturing
- Building the domestic supply chain for critical isotopes used in advanced fission and fusion reactors

## Why Work Here
- **Hands-On Lab Culture**: Most roles are on-site in Austin, TX, where teams work directly with real hardware — lasers, optics, electronics, vacuum systems, and plasma sources. Engineers see their designs come to life in the lab.
- **Small Team, Big Ownership**: With only 12 employees (+88.9% YoY growth), team members work closely with founders and technical leaders. Ideas and contributions directly shape the technology and roadmap.
- **Mission-Driven Work**: Everything the company does supports next-generation fission, fusion, and scientific innovation — with long-term impact on clean energy and research.
- **Room to Grow**: As the company scales, there are significant opportunities to take on new responsibilities, lead projects, and grow with the organization.
- **Cross-Disciplinary Collaboration**: Engineers, physicists, chemists, and operations staff work side-by-side to solve complex, interdisciplinary problems.
- **Culture Highlights**: Weekly team lunches, regular opportunities to share progress and ideas, flexible work hours.
- **Compensation**: Competitive compensation including equity, performance bonus, paid time off, 401(k) matching, medical/dental/vision benefits, HSA and FSA options.
- **Office Policy**: On-site in Austin, TX (hands-on hardware roles require lab presence)
- **Tech Stack**: LabVIEW, CODESYS, SolidWorks, and other tools relevant to laser systems and automation

## Sources
1. [hexium.com](https://www.hexium.com/)
2. [hexium.com/careers](https://www.hexium.com/careers)
3. [linkedin.com/company/hexiuminc](https://www.linkedin.com/company/hexiuminc)
4. [job-boards.greenhouse.io/hexium](https://job-boards.greenhouse.io/hexium)
5. [cbinsights.com/company/hexium](https://www.cbinsights.com/company/hexium)

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