Engineering & Systems
Laser Engineer / Technician
The Laser Technician will work hands-on in the laboratory to support the development, testing and maintenance of advanced infrared gas laser systems used in isotope enrichment.
This role emphasizes practical, in-lab work such as system assembly, alignment, calibration, troubleshooting, and safety compliance. The ideal candidate enjoys working directly with lasers and optical systems and has a strong foundation in laser technology and laboratory practices.
Full Time
Location – Southeast
Salary: $80,000+
Laser Engineer / Technician
Key Responsibilities
- Assisting in the installation, alignment, calibration, and maintenance of infrared gas laser systems.
- Conducting system performance tests, collecting data, and assisting in troubleshooting laser and sub-system issues.
- Supporting experimental setups and contributing to ongoing laser development and optimization projects.
- Performing optical metrology and diagnostics under supervision of senior staff.
- Ensuring compliance with laser safety protocols and laboratory procedures.
- Documenting laboratory activities and results clearly and accurately.
- Collaborating with engineering, R&D and operations teams to achieve technical objectives.
- Will serve as Laser Safety Officer.
Education, Qualifications & Required Skills
Required
- Hands-on experience with lasers, optics or related technical systems (academic or industrial).
- Familiarity with basic laser principles, alignment techniques, optical diagnostics and safety protocol as related to the use of lasers.
- Strong mechanical and problem-solving skills for laboratory work.
- Team-oriented with effective communication skills.
- Associate’s or Bachelor’s degree in Physics, Electrical Engineering, Optical Engineering or related technical field (or equivalent lab experience).
- 5+ years of practical experience working in a laboratory with lasers, optics or precision equipment preferred.
Security & Work Authorization
- Ability to obtain and maintain a DOE Q-clearance.
- Must be a U.S. Citizen under 10 CFR Part 810 and/or export control requirements (ITAR/EAR) as applicable.
Working Conditions
- Onsite role – Oak Ridge, TN.
- Monday – Friday, Full Time; Occasional overtime is expected for ensuring deliverables.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits or commissioning.
- Limited travel (<10–15%) to vendor, regulatory or partner sites.
Benefits
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Competitive salary (based on experience – starting range $80,000 annually), potential stock options and performance incentives.
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Comprehensive benefits including medical, dental, vision, 401(k), disability and life.
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Paid time off, paid holidays and professional development support.
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Relocation assistance available.
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.
UF6 Process Engineer
We are seeking an experienced Senior Chemical/Process/Nuclear Engineer to join our team.
The ideal candidate will have a strong background in the handling of UF6 gas, with expertise in UF6 corrosion-resistant components, vacuum technologies, process design and safety documentation.
This role will involve managing complex projects, providing technical oversight and ensuring compliance with regulatory requirements.
Full Time
Location – Southeast
Salary: $150,000+
UF6 Process Engineer
Key Responsibilities
- Leading and executing UF6-related chemical and nuclear engineering projects, including process design, safety basis documentation and operational readiness reviews.
- Providing support to prepare and review licensing and safety documentation for compliance with DOE, NRC and other regulatory agencies.
- Designing, developing, and overseeing mechanical systems such as UF6 gas handling systems, including vacuum pumps, valves, piping, etc, and other uranium processing equipment and chemical separation systems.
- Performing and overseeing NQA-1 calculations, P&IDs, and PFDs for nuclear facilities.
- Providing technical guidance for facilities such as the Y-12 National Nuclear Security Complex and the Hanford Waste Treatment Plant.
- Developing and implementing solutions for the startup and operation of hazardous waste treatment and uranium processing systems.
- Collaborating with cross-functional teams to ensure operational and critical safety standards are maintained.
- Conducting vendor evaluations and oversee procurement engineering for nuclear-grade components.
Education, Qualifications & Required Skills
Required
- Education: Masters’ or PhD degree in Chemical Engineering or similar.
- Experience: Minimum of 15+ years of relevant experience in chemical, process and nuclear engineering.
- Extensive hands-on experience with UF6 and UF6-rated equipment (i.e. vacuum pumps, valves, piping, etc), as well as operational readiness reviews.
- Experience in process modeling to calculate or predict flow rates, pressures, conductance, etc in a UF6 gas handling system/P&ID.
- Experience with DOE and NRC regulatory frameworks.
Preferred
- Strong expertise in uranium chemistry and enrichment processes (centrifuge and laser).
- Proficient in process equipment design, safety analysis and NQA-1 compliance.
- Demonstrated ability to manage projects in both technical and leadership capacities.
Working Conditions
- Onsite role – Oak Ridge, TN.
- Monday – Friday, Full Time.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift ~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits or commissioning.
- Limited travel (<10–15%) to vendor, regulatory or partner sites.
Benefits
- Competitive salary (based on experience – starting range $150,000 annually), potential stock options and performance incentives.
- Comprehensive benefits including medical, dental, vision, 401(k), disability and life.
- Paid time off, paid holidays and professional development support.
- Relocation assistance available.
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.
Senior Vacuum Systems Engineer
We are seeking a Senior Vacuum Systems Engineer to design and deploy advanced vacuum and gas handling systems for laser-based uranium enrichment using UF₆.
This role focuses on high-performance vacuum architectures operating with corrosive, moisture-sensitive fluorinated gases, requiring strong expertise in materials compatibility, system modeling, and regulatory compliance.
Full Time
Location – Southeast
Salary: $160,000+
Senior Vacuum Systems Engineer
Key Responsibilities
- Design and optimize vacuum systems including chambers, piping, and gas handling subsystems for UF₆ service.
- Select and specify vacuum pumps (dry pumps, Roots blowers, turbomolecular, hybrid trains) based on performance and chemical compatibility.
- Develop and maintain P&IDs and system specifications.
- Model gas flow, conductance, and pressure profiles using ChemCad, Aspen Plus, or similar tools.
- Design and integrate cold traps and cryogenic traps for UF₆ capture and recovery.
- Define materials of construction (metals, seals, coatings) to mitigate corrosion and HF formation.
- Specify and integrate instrumentation (pressure gauges, temperature sensors) for vacuum and cryogenic systems.
- Establish pump-down, purge, and passivation procedures to prevent contamination and moisture ingress.
- Partner with vendors; maintain strong knowledge of UF₆-compatible vacuum equipment suppliers. Lead vacuum component procurement, supplier qualification, and vendor management for critical systems.
- Support installation, commissioning, troubleshooting, and performance validation
- Ensure compliance with nuclear and safety requirements, including coordination with the U.S. Nuclear Regulatory Commission as well as ISO vacuum standards.
Education, Qualifications & Required Skills
Required
- M.S. or PhD in Mechanical Engineering, Chemical Engineering, or related field.
- 7+ years of experience with vacuum pumps/systems in corrosive or high-purity environments.
- Expertise in vacuum pump technologies and system design.
- Proficiency with ChemCad, Aspen Plus, or equivalent simulation tools.
- Strong understanding of vacuum conductance, gas dynamics, and transient behavior.
- Experience with P&IDs, vacuum hardware, and trapping systems.
- Demonstrated vendor knowledge and equipment selection experience.
- Ability to translate simulation into real-world system performance.
- Strong judgment in vacuum pump selection in either corrosive or non-corrosive environments.
- Detail-oriented approach to safety-critical design.
- Effective collaboration with vendors, regulators, and cross-functional teams.
Preferred
- Experience with UF₆, fluorinated gases, or nuclear fuel cycle systems.
- Familiarity with laser isotope separation technologies.
- Knowledge of fluorine/HF materials compatibility and corrosion control.
- Experience with HAZOP, FMEA, or similar safety methodologies.
- Background in UHV or semiconductor-grade vacuum systems.
- Experience leading multidisciplinary engineering teams.
Working Conditions
- Onsite role – Oak Ridge, TN.
- Monday – Friday, Full Time; Occasional overtime is expected for ensuring deliverables.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift to ~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits, or commissioning.
- Limited travel (<10–15%) to vendor, regulatory, or partner sites.
Benefits
- Competitive salary (based on experience – starting range $160,000 annually), potential stock options and performance incentives
- Comprehensive benefits including medical, dental, vision, 401(k), disability and life
- Paid time off, paid holidays and professional development support
- Relocation assistance available
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.
Safety, Quality & Compliance
EH&S Manager
We are seeking an experienced EHS Manager to lead environmental, occupational, laser and radiological safety programs across our facility and operations.
The EHS Manager owns the strategy, deployment, and continuous improvement of environmental, safety, health, radiation protection and laser safety programs. This role ensures compliance with NRC/DOE/OSHA/EPA/state regulations, supports readiness for inspections/audits, and cultivates a proactive safety culture in a high-hazard, high-precision industrial environment.
The EHS Manager will partner closely with operations, engineering, radiological control/health physics, facilities, and security to ensure safe work planning and execution.
Full Time
Location – Southeast
Salary: $130,000+
EH&S Manager
Key Responsibilities
Health and Safety
- Developing, implementing, and maintaining site-wide EHS programs (industrial safety, chemical hygiene/HazCom, electrical and LOTO, machine guarding, ergonomics, confined space, hot work, fall protection, PPE, etc).
- Owning the laser safety program (Class 3B/4), including hazard evaluations, Laser Controlled Area management, SOPs, interlocks/engineering controls and training in alignment with ANSI Z136.1; serve as or supervise the LSO.
- Interacting with TOSHA to ensure LIST remains complaint with workplace safety and health in the state of Tennessee.
- Leading incident investigations (root cause, corrective/preventive actions), risk assessments, JSAs/JHAs and behavioral safety initiatives.
- Planning and delivering onboarding, annual and task-specific training for employees and contractors.
- Maintaining EHS procedures, metrics, dashboards, and management reviews; drive CAPA effectiveness and closure.
Radiological & Nuclear Safety
- Partnering with Radiological Control/Health Physics and/or the company RSO to implement ALARA principles and radiation protection requirements (e.g., 10 CFR Parts 19 & 20).
- Supporting compliance with nuclear material handling, processing, and security controls (e.g., 10 CFR Part 70, material balance areas, inventory, postings, surveys, dosimetry, instrumentation).
- Coordinating readiness activities and responses for NRC/DOE/state inspections and audits; maintaining records and required reports.
Environmental Compliance & Sustainability
- Ensuring compliance with EPA and state environmental rules (e.g., RCRA, CAA, CWA/NPDES, SPCC, SWPPP, TSCA); managing permits, sampling/monitoring and reporting.
- Overseeing hazardous and radioactive waste management, universal waste, and waste minimization; manage manifests and DOT 49 CFR compliance for hazmat shipments.
- Leading pollution prevention, sustainability, and resource efficiency initiatives; manage environmental aspects/impacts and objectives (e.g., ISO 14001 readiness).
Emergency Preparedness
- Leading the site Emergency Response program: plans (ERP), drills/exercises, training, and post-event corrective actions; align with NIMS/ICS.
- Coordinating with local/state/federal agencies and site security on emergency planning, notifications, and integrated response.
Leadership & Culture
- Leading and developing an EHS team; providing clear priorities, coaching, and technical guidance.
- Influencing at all levels, from shop floor to executives; driving a strong speak-up culture and visible management engagement.
Education, Qualifications & Required Skills
Required
- Bachelor’s degree in Environmental Science, Occupational Safety, Industrial Hygiene, Health Physics, Engineering or related fields.
- 7+ years of EHS experience in a regulated industrial, nuclear, or advanced manufacturing environment.
- Demonstrated knowledge of OSHA (29 CFR 1910), EPA programs (RCRA/CAA/CWA), NRC 10 CFR (Parts 19/20/70) and DOT 49 CFR hazmat.
- Experience building and auditing EHS programs, conducting risk assessments and leading incident investigations/root cause analysis.
- Effective communication skills (procedures, training, briefings) and ability to influence cross-functional teams.
Preferred
- Experience with nuclear fuel cycle, uranium processing/enrichment, radiological work or DOE/NNSA/NRC-regulated facilities.
- Professional certifications: CLSO (or eligibility), CSP, CIH, CHMM, CHP, PE.
- Familiarity with ISO 45001/14001 systems, PSM-like risk management, and human/organizational performance (HOP).
- Working knowledge of laser interlock systems, enclosures, beam paths, alignment procedures and non-beam hazards (fumes, fire, electrical).
- Experience with EHS software (incident/CAPA, training LMS, SDS management) and radiation monitoring systems/instrumentation.
Security & Work Authorization
- Ability to obtain and maintain a DOE Q-clearance.
- Must be a U.S. Citizen under 10 CFR Part 810 and/or export control requirements (ITAR/EAR) as applicable.
Working Conditions
- Onsite role in a mixed R&D/operations/industrial environment.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift to ~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits, or commissioning.
- Limited travel (<10–15%) to vendor, regulatory, or partner sites.
Benefits
- Competitive salary (based on experience – starting range $130,000 annually), potential stock options and performance incentives.
- Comprehensive benefits including medical, dental, vision, 401(k), disability and life.
- Paid time off, paid holidays and professional development support.
- Relocation assistance available.
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.
Operations & Leadership
Director of Deconversion
The Director of Deconversion is a senior position responsible for overseeing all aspects of uranium hexafluoride (UF₆) deconversion operations at our state-of-the-art laser uranium enrichment facility.
This role requires comprehensive knowledge of nuclear fuel cycle processes, regulatory compliance, and advanced deconversion technologies.
The position involves strategic planning, operational oversight, and safety management responsibilities for the safe conversion of depleted uranium hexafluoride into stable uranium oxide forms.
Full Time
Location – Southeast
Salary: $200,000+
Director of Deconversion
Duties and Responsibilities
Strategic Leadership & Operations Management
- Develop and implement comprehensive deconversion strategies aligned with production goals and regulatory requirements.
- Oversee daily operations of deconversion processes, ensuring optimal efficiency and safety protocols.
- Manage multi-disciplinary teams including process engineers, safety specialists, and operations technicians.
- Coordinate with enrichment operations to ensure seamless integration of deconversion activities.
Regulatory Compliance & Safety Management
- Ensure full compliance with NRC regulations, and international IAEA standards.
- Maintain current knowledge of evolving nuclear regulatory landscape and implement necessary operational adjustments.
- Develop and oversee implementation of comprehensive safety protocols specific to UF₆ handling and deconverted products.
- Engage emergency response planning and coordinate with site emergency management teams.
Technical & Process Excellence
- Optimize deconversion process parameters to maximize uranium oxide recovery while minimizing waste generation.
- Implement advanced process monitoring and control systems for real-time optimization.
- Collaborating with R&D teams on process improvements and technology advancement initiatives
- Ensure proper handling, storage, and disposition of uranium products, including U₃O₈ and anhydrous HF.
Required Qualifications
Education & Experience
- Master’s degree in Nuclear Engineering, Chemical Engineering, or related technical field; Ph.D. preferred.
- Minimum 15 years of progressive experience in nuclear fuel cycle operations.
- At least 8 years of senior management experience in nuclear facilities.
- Demonstrated experience with uranium hexafluoride processing and handling.Technical Expertise
Technical Expertise
- Comprehensive understanding of uranium deconversion processes, thermodynamics, and chemical engineering principles.
- Expert knowledge of nuclear criticality safety, radiation protection, and ALARA principles.
- Proficiency in process control systems, SCADA systems, and advanced analytics platforms.
- Prefer familiarity with laser isotope separation technology and its integration with deconversion operations.
Regulatory & Security Requirements
- Active DOE Q-level security clearance or ability to obtain within 12 months.
- Demonstrated history of successful regulatory inspections and license renewals.
Preferred Qualifications
- Professional Engineer (PE) license in Nuclear or Chemical Engineering.
- Previous experience with advanced uranium enrichment technologies.
- Six Sigma Black Belt or equivalent process improvement certification.
- Experience with international nuclear safeguards and IAEA protocols.
- Published research in nuclear fuel cycle or uranium processing technologies.
Working Conditions
- Onsite role – Oak Ridge, TN.
- Monday – Friday, Full Time; Occasional overtime is expected for ensuring deliverables.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift to ~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits, or commissioning.
- Limited travel (<10–15%) to vendor, regulatory, or partner sites.
Benefits
- Competitive salary (based on experience – starting range $200,000 annually), potential stock options and performance incentives
- Comprehensive benefits including medical, dental, vision, 401(k), disability and life
- Paid time off, paid holidays and professional development support
- Relocation assistance available
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.
Technical Project Manager
We are seeking an experienced and proactive Technical Project Manager to lead and coordinate cross-functional teams in the planning, execution, and delivery of projects within scope, budget, and schedule.
The ideal candidate will bring strong organizational, communication and leadership skills to manage project lifecycles, meet project milestones, mitigate risks, and ensure stakeholder alignment.
This role requires a results-driven professional with the ability to oversee multiple projects simultaneously, enforce project governance and ensure high standards of quality and performance are consistently met.
Full Time
Location – Southeast
Salary: $160,000+
Technical Project Manager
Key Responsibilities
- Managing project deliverables across all phases of LIST’s technology maturation plan.
- Developing work breakdown structures (WBS) for all projects related to the company’s proprietary technology.
- Working with contractors and internal stakeholders to ensure milestones are met on time and on budget.
- Effective communication and cross-functional interaction with stakeholders, both internally and externally, to manage costs, objectives and schedule.
- Fiscal responsibility of project resources.
Education, Qualifications & Required Skills
Required
- Master’s or PhD degree with 10+ years of relevant experience in technical fields such as Mechanical Engineering, Physics, Laser Physics, Optics, Photonics, Electrical Engineering or equivalent field.
- Demonstrated understanding of Project Management principals and experience in the management of cross-functional programs coordinating the research, development and engineering of complex projects.
- Budget management for >$10M/year programs.
- Ability to work within project management tools, such as Microsoft Project, Wrike, Cerberus, IRR, PGP and Resource Management (Spotfire, PL sheets, LTFP).
- Excellent leadership, organization & communications skills.
- Effective executive and customer communication presence.
Preferred
- A background in high-power Lasers, infrared Optics, Optomechanical design, Plasma physics, Nuclear Physics/Engineering is highly desirable.
- Knowledge of advanced gas laser applications in industrial, medical or research fields.
- Excellent written and verbal communication skills for technical reporting and collaboration.
Working Conditions
- Onsite role – Oak Ridge, TN.
- Monday – Friday, Full Time; Occasional overtime is expected for ensuring deliverables.
- Ability to perform field work (stand, walk, climb stairs/ladders, don PPE, lift to ~30–50 lbs. occasionally).
- Periodic off-hours support for emergencies, outages, audits, or commissioning.
- Limited travel (<10–15%) to vendor, regulatory, or partner sites.
Benefits
- Competitive salary (based on experience – starting range $160,000 annually), potential stock options and performance incentives.
- Comprehensive benefits including medical, dental, vision, 401(k), disability and life.
- Paid time off, paid holidays and professional development support.
- Relocation assistance available.
Complete the Application Form Below:
LIST is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic. We also participate in E-Verify where required.