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Geant4 Jobs in Tennessee (NOW HIRING)

Geant4 information

What is the difference between Geant4 vs Medical Physicist?

AspectGeant4Medical Physicist
Required CredentialsPhysics or engineering degree, programming skillsPhysics or medical physics degree, certification (e.g., ABR)
Work EnvironmentResearch labs, simulation developmentHospitals, clinics, radiation therapy centers
Industry UsageParticle physics, radiation simulationMedical imaging, radiation therapy, diagnostics

While Geant4 focuses on developing and implementing physics simulations for research, Medical Physicists apply physics principles to diagnose and treat patients using radiation. Both roles require strong physics backgrounds, but their work environments and applications differ significantly.

What are the key skills and qualifications needed to thrive as a Geant4 simulation developer?

To thrive as a Geant4 Simulation Developer, you need strong proficiency in C++ programming, a solid background in physics or engineering, and experience with Monte Carlo particle transport simulations. Familiarity with the Geant4 toolkit, scientific computing libraries, and version control systems like Git is typically required, and advanced degrees or certifications in physics or related fields are highly beneficial. Analytical thinking, problem-solving skills, and effective collaboration are essential soft skills for excelling in this role. These competencies are crucial for developing accurate simulations, troubleshooting complex issues, and supporting research or engineering projects in scientific and medical domains.

What are some common challenges faced by Geant4 developers when integrating simulations into larger research projects?

One common challenge Geant4 developers encounter is ensuring seamless integration of complex simulations into multidisciplinary research environments, which often involve collaboration with scientists, engineers, and software teams. This typically requires adapting simulation outputs to match the data formats and analysis workflows of the broader project, as well as maintaining code compatibility with evolving software dependencies. Effective communication and a solid understanding of project requirements are crucial to address these challenges and to contribute meaningful results to the team’s goals.

What is Geant4?

Geant4 is a software toolkit for the simulation of the passage of particles through matter, widely used in high energy physics, nuclear experiments, and medical physics. It allows scientists and engineers to model how particles interact with complex geometries and materials, helping to design detectors and optimize experiments. Written in C++, Geant4 provides a flexible and extensible framework for simulating physics processes such as electromagnetic, hadronic, and optical interactions. The toolkit is developed by an international collaboration and is open-source, making it accessible to researchers around the world.
What are popular job titles related to Geant4 jobs in Tennessee? For Geant4 jobs in Tennessee, the most frequently searched job titles are:
What cities in Tennessee are hiring for Geant4 jobs? Cities in Tennessee with the most Geant4 job openings:
Infographic showing various Geant4 job openings in Tennessee as of August 2026, with employment types broken down into 87% Full Time, 6% Temporary, and 7% Contract. Highlights an 94% In-person, and 6% Remote job distribution.

R&D Associate - Sensors and Electronics Group

Oak Ridge National Laboratory

Oak Ridge, TN • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 4 days ago


Oak Ridge National Laboratory rating

8.8

Company rating: 8.8 out of 10

Based on 16 frontline employees who took The Breakroom Quiz

14th of 120 rated laboratories


Job description

Requisition Id 16896
Overview:
We invite applications for the early career position of R&D Assistantto support the Sensors and Electronics Group in the Electrification and Energy Infrastructures Division (EEID). This early career research position will involve supporting existing programs in areas involving particle accelerators, electronics, pulsed power, and energy systems.
Major Duties/Responsibilities
  • Perform particle tracking simulations and computational analyses to support the design, optimization, and interpretation of advanced engineering and scientific research
  • Develop and maintain computational workflows, scripts, and software tools to improve simulation efficiency, data processing, and reproducibility
  • Design, assemble, and execute laboratory experiments to validate simulation results, analyze experimental data, and refine computational models based on observed performance
  • Analyze and interpret experimental and simulation data using appropriate statistical and computational methods, and document findings to support ongoing research activities
  • Develop, integrate, test, and troubleshoot electronic systems and instrumentation, including circuit assembly, soldering and desoldering of components, diagnostic testing, and hardware modifications
  • Prepare high-quality technical documentation, including white papers, proposals, statements of work (SOWs), technical reports, journal manuscripts, and presentation materials for internal and external stakeholders
  • Adhere to laboratory safety, security, and quality assurance requirements while conducting research activities and operating laboratory equipment

Basic Qualifications:
  • M.S. or Ph.D. degree in Nuclear, Mechanical, or Electrical Engineering, or a closely related discipline
  • At least two years of relevant experience
  • Experience with scientific programming and data analysis using Python, MATLAB, C/C++, or similar programming languages
  • Demonstrated technical writing skills, including preparation of reports, presentations, and other scientific documentation
  • Demonstrated ability to work cohesively with research teams, sponsors, and project end users

Preferred Qualifications:
  • Experience with multiphysics and particle transport simulation tools such as COMSOL Multiphysics, CST Studio Suite, ANSYS, MCNP, Geant4, or comparable software for electromagnetic field modeling, particle tracking, and device optimization
  • Experience designing, assembling, and conducting laboratory experiments, including integration of instrumentation, sensors, and data acquisition (DAQ) systems
  • Experience with electronics development, circuit debugging, and laboratory troubleshooting, including soldering, desoldering, and hardware integration
  • Demonstrated ability to organize, visualize, and communicate complex experimental and simulation data through high-quality figures, presentations, and technical reports
  • Experience supporting research in particle accelerators, radiation detection, pulsed power, high-voltage systems, or related engineering research is desirable

Special Requirements:
  • Must be able to perform tasks that involve physical requirements, including, but not limited to, lifting/carrying and pushing/pulling objects.
  • Familiar with the appropriate use of personal protective equipment, including eye protection, earmuffs, hard hats, and gloves.
  • Be able to work in varied working conditions, including noise over 80dB, vibration, mechanical, electrical, and thermal hazards, moving objects, operating vehicles on company property and/or highway, and working with solvents, fumes, dust, and gases.
  • Visa Sponsorship: Visa sponsorship is not available for this position.
  • Security, Credentialing, and Eligibility Requirements: Q Clearance: This position requires the ability to obtain and maintain a clearance from the Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program.
  • Letters of Reference: Please submit two letters of reference when applying to this position. You may upload these directly to your application or have them sent to ORNLRecruiting@ornl.gov with the position title and number referenced in the subject line.

Instructions to upload documents to your candidate profile:
  • Login to your account via jobs.ornl.gov
  • View Profile
  • Under the My Documents section, select Add a Document

About ORNL:
As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation's most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.
ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well-being of you and your family. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also available for added convenience.
Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.
This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.
We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.
If you have trouble applying for a position, please email ORNLRecruiting@ornl.gov.
ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer.

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