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Senior Vacuum System Engineer
Job in
Nashville, Davidson County, Tennessee, 37247, USA
Listed on 2026-09-02
Listing for:
Laser Isotope Separation Technologies (LIS Technologies Inc.)
Full Time
position Listed on 2026-09-02
Job specializations:
-
Engineering
Process Engineer, Quality Engineering
Job Description & How to Apply Below
- 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 Chem Cad, 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.
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 Chem Cad, 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.
- 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.
- 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 (
Position Requirements
10+ Years
work experience
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