---
title: 'Senior Electrical Engineer at Hexium'
canonical: 'https://feeny.ai/job/senior-electrical-engineer-hexium-austin-k25b8taw0078'
type: 'job'
last_seen: '2026-10-14'
---

# Senior Electrical Engineer at Hexium

- **Company:** Hexium
- **Location:** Austin, TX
- **Posted:** 2026-09-30
- **Last confirmed live:** 2026-10-14
- **Apply:** https://job-boards.greenhouse.io/hexium/jobs/4423196009

## 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. For a Senior Electrical Engineer, that means technical ownership of systems that are central to Hexium’s technology and to critical U.S. energy and national-security supply chains.

## Role

We’re looking for a Senior Electrical Engineer to design and build the sensitive diagnostics, precision instrumentation, and custom controllers our laser and separation technology depends on. This is a hands-on, iterative design role within our Technology Development group, focused on developing electronics that can reliably capture and process sensor and signal data in complex experimental environments.

You’ll take designs from a blank schematic through component selection, prototyping, bench testing, debugging, and integration with larger systems. The ideal candidate has deep experience with precision analog design and is equally comfortable designing circuits and working directly with hardware on the bench.

## Key Responsibilities

- Design low-noise analog front-ends (transimpedance amplifiers, charge amplifiers, precision signal conditioning) for sensitive, fast-transient measurements
- Develop custom signal-amplification and detection electronics for applications like mass spectrometers
- Design and build controller assemblies for test diagnostics and signal processing
- Own the full instrument development cycle: schematic capture, PCB layout, prototyping, bench characterization, hardware iteration
- Integrate diagnostic electronics with DAQ and control systems for real-time operation
- Work directly with scientists to translate measurement requirements into working hardware
- Support installation, commissioning, and troubleshooting of new control and electrical hardware

Required Qualifications

- Bachelor's or Master's degree in Electrical Engineering with a strong analog/instrumentation focus
- 5+ years of hands-on experience designing low-noise analog instrumentation for sensitive or low-level signal measurement
- Demonstrated experience measuring fast transient, low-current, or low-voltage pulses (photodiode, particle/ion detector, or similar signal chains)
- Schematic capture and PCB design experience
- Comfortable with iterative, trial-and-error hardware development in an R&D lab setting
- Able to work on-site in Austin, TX
- Proficient in Altium, KiCAD, Allegro, or similar schematic/PCB design tools
- This role will be exposed to export-controlled information and technology and requires compliance with applicable export control laws and regulations

## Preferred Qualifications

- Currently holds an active DOE Q clearance or active Top Secret clearance, or have held DOE Q / Top Secret clearance within the past 18 months
- Experience with spectrometry, ion detection, or other analytical/scientific instrumentation electronics
- Experience with laser system controls or diagnostics
- Familiarity with lock-in amplifiers, boxcar averagers, fast oscilloscopes, or other low-signal measurement techniques
- Background in a national-lab, university research, or hardware-startup R&D environment

Physical Requirements

- Ability to sit, stand, and bend forward for extended periods at a lab bench performing fine-motor tasks (soldering, board assembly, probing) requiring sustained hand-eye coordination and dexterity
- Ability to work within a laser-controlled area 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, working within Hexium's Engineering Test Facility. Expect a fast-moving, iterative R&D lab setting rather than a conventional office- you'll be at the bench more than in meetings.

## 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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