Physics Simulation Python Jobs in Knoxville, TN (NOW HIRING)

At BWX Technologies, Inc. (NYSE: BWXT), we are People Strong, Innovation Driven. A U.S.-based company, BWXT is a Fortune 1000 and Defense News Top 100 manufacturing and engineering innovator that provides safe and effective nuclear solutions for global security, clean energy, environmental restoration, nuclear medicine and space exploration. With more than 7,800 employees, BWXT has 14 major operating sites in the U.S., Canada and the U.K. We are the sole manufacturer of naval nuclear reactors for U.S. submarines and aircraft carriers. Our company supplies precision manufactured components, services and fuel for the commercial nuclear power industry across four continents. Our joint ventures provide environmental restoration and operations management at a dozen U.S. Department of Energy and NASA facilities. BWXT's technology is driving advances in medical radioisotope production in North America and microreactors for various defense and space applications. For more information, visit www.bwxt.com . Follow us on LinkedIn , X , Facebook and Instagram .
Welcome to BWXT
We believe in empowering our employees and cultivating a dynamic workplace that fosters growth and collaboration. Whether you're an experienced professional or just starting your career, you'll find opportunities to challenge yourself, learn from seasoned experts, and contribute to nuclear innovation. We required a diverse range of skills to support our work in the markets that drive our business and welcome candidates from all backgrounds and life stages who are passionate about making a difference.
Position Overview:
The Gas Testing Engineer is responsible for coordinating cross functional system design and gas testing activities supporting the development, optimization, and scale up of gas centrifuge-based systems used in uranium enrichment. This role integrates hands on gas testing, pilot plant operations, systems engineering, and project leadership. The engineer will drive schedule, budget, risk, and change management while ensuring safe, compliant, and high-quality execution across all phases of development.
Location:
On-site in Oak Ridge, Tennessee.
Your Day to Day as a Gas Testing Engineer:

• Lead a cross functional team, coordinating schedules, budgets, scope, and resources.
• Facilitate recurring team meetings focused on task tracking, issue identification, and resolution.
• Provide technical guidance and conduct detailed reviews of engineering and testing documentation.
• Coordinate with adjacent leads for alignment across mechanical, electrical, and I&C systems.
• Develop and implement gas centrifuge testing protocols; analyze results to improve system throughput, reliability, and separation performance.
• Conduct advanced R&D in gas processing and separation technologies.
• Lead pilot plant design, construction, and operations to validate and scale new processes.
• Integrate pilot plant findings into facility design, including process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), and equipment specifications.
• Ensure cohesive interface control across mechanical, electrical, and I&C systems.
• Identify issues, track risks, and develop mitigation plans; manage change and risk release processes.
• Review and coordinate Design Change Requests (DCRs) and ensure updates are reflected in the integrated schedule.
• Coordinate with Procurement Engineering, Purchasing, Quality, and suppliers to ensure components meet technical, cost, delivery, and quality requirements.
• Communicate with internal and external stakeholders on technical and programmatic issues.
• Drive schedule and budget adherence; support weekly progress reporting (e.g., Quad Chart).
• Provide briefings on risks, issues, and schedule performance.

Required Qualifications:

• Bachelor's degree in Chemical, Nuclear, related Engineering, or Physics discipline.
• Seven (7)+ years of experience in system design, test engineering, and/or process development.
• Experience in gas processing, separation technologies, and precision gas testing environments.
• Hands on pilot plant design and operations experience for chemical or process development.
• Proficiency with process simulation tools (Aspen Plus, HYSYS) and engineering software such as MATLAB or Python.
• Strong skills in scheduling, budgeting, risk and change management, and cross disciplinary coordination.
• Excellent written and verbal communication skills.
• Ability to work independently with minimal supervision.
• U.S. citizenship required.
• Ability to obtain and maintain a DOE Q security clearance.

Preferred Qualifications:

• Experience with gas centrifuge testing or fuel cycle technology development.
• Familiarity with facility design practices (PFDs, P&IDs, equipment specifications).
• Experience with NRC or DOE requirements.
• Professional Engineer (PE) licensure.
• Active DOE Q or DoD clearance.

What We Offer:

• Competitive salary and benefits package, including health, dental, and retirement plans.
• Flexible work schedules and paid time off to promote a healthy work-life balance.
• Professional development opportunities, including mentorship programs and sponsorship for continuing education.
• An inclusive atmosphere that celebrates new perspectives and supports collaboration between different generations.
• The chance to be part of a mission-driven organization making a positive impact on the future of energy.
• Opportunities for continuous learning and training to grow throughout your career!

Pay: $99,410 - $157,000
The base salary range for this position in Tennessee (US-TN) at the start of employment is expected to be between $99,410 and $157,000 per year. However, the base salary offered is based on local job market factors, and may vary further depending on factors specific to the selected job candidate, such as job-related knowledge, skills, experience, and other objective business considerations. Subject to these considerations, the total compensation package for this position may also include other elements, such as an annual cash incentive in addition to a full range of medical, retirement, and/or other benefits. Details of participation in these benefit plans will be provided at such time the selected job candidate receives an offer of employment. If hired, the selected job candidate will be employed 'at-will,' unless employed at a location and in a position subject to a collective bargaining agreement. The company further reserves the right to modify base salary (as well as any other discretionary payment, compensation or benefit program) at any time, including for reasons related to individual performance, company or individual department/team performance, and other market factors.
As a federal government contractor, BWX Technologies, Inc. and any subsidiaries, affiliates and related entities ("BWXT" or the "Company") complies with all federal, state, and local laws and customer requirements regarding health and safety protocols. As such, all BWXT new hires will be required to adhere to applicable Company health and safety requirements within the workplace as a condition of employment.
All candidates must be U.S. citizens. Selected applicants are required to successfully complete a pre-employment check and drug screening. In addition, the position may require the ability to obtain and maintain applicable federal eligibility requirements for access to classified/sensitive information or matter which involves an extensive criminal and financial background investigation, drug test, previous employment, and reference verifications.
BWXT is committed to the concept of Equal Employment Opportunity. We have established procedures to ensure that all personnel actions such as recruitment, compensation, career development, benefits, company-sponsored training and social recreational programs are administered without regard to race, color, religion, sex, national origin, citizenship, age, disability, protected veteran or other protected status.
BWX Technologies, Inc. and its affiliates and subsidiaries (BWXT) is not responsible for and does not accept any liability for fees or other costs associated with resumes or candidates presented by recruiters or employment agencies, unless a binding, written recruitment agreement between BWXT and the recruiter or agency exists prior to the presentation of candidates or resumes to BWXT and includes the specific services, job openings, and fees to be paid ("Agreement"). BWXT may consider any candidate for whom a recruiter or agency has submitted an unsolicited resume and explicitly reserves the right to hire such candidate(s) without any financial obligation to the recruiter or agency unless an Agreement is in place prior to presentation and such Agreement explicitly encompasses the job opening for which such fees or costs are sought. An email, verbal or other informal contact with any person within BWXT will not create a binding agreement. Agencies or recruiters without an Agreement are directed not to contact any hiring managers of BWXT with recruiting inquiries or resumes. Recruiters and agencies interested in partnering with BWXT may contact BWXT's Talent Acquisition team at talent_acquisition@bwxt.com.
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