Senior Methods Development Engineer

Updated on 5/17/2024

Commonwealth Fusion Systems

Commonwealth Fusion Systems

501-1,000 employees

Develops compact fusion power plants



Devens, MA, USA

Required Skills
  • Bachelor’s degree in Engineering with minimum of 10 years of relevant experience, MS with minimum of 8 years of experience or PhD with minimum of 5 years or experience preferred, in Nuclear Engineering, Mechanical Engineering or another relevant field
  • Experience in radiation transport methods development and software development
  • Experience with finite element meshing of CAD-based modeling workflows
  • Strong background in Deterministic Radiation Transport Methods, Monte Carlo Radiation Transport Methods and Variance Reduction for coupled neutron/photon transport
  • Experience in Computational Fluid Dynamics methods and analysis workflows, including optimizing for accuracy, stability, and speed
  • Experience with High Performance Computing and Cloud-based Computing
  • Strong general analytical skills with fundamental understanding of the first principles of transport methods and nuclear data
  • Experience with Python, FORTRAN, C++, Linux
  • Experience with common nuclear engineering software, such as MCNP, OpenMC, FISPACT, ATTILA, SCALE, ORIGEN, etc.
  • Knowledge of various nuclear codes and standards
  • Strong interpersonal and technical communication skills and the ability to work effectively with a wide range of constituencies in a diverse community as well as foster a cooperative work environment
  • Standup and test workflows for neutronics analysis, including developing automation software
  • Work closely with CFS IT Infrastructures as a super-user for the HPC clusters
  • Be accountable for the QA and use of best practices in software development
  • Conduct simulations and analyses to verify and optimize radiation transport models
  • Provide technical support and expertise to internal team members and external stakeholders
  • Provide prompt feedback when a task encounters issues that preclude its timely completion
  • Comply with CFS design control processes, including but not limited to: *Documenting analyses in written files *Arranging for check and review of analysis files through submission to M-Files *Upholding high standards of good-faith collaboration and teamwork

Commonwealth Fusion Systems

Commonwealth Fusion Systems


Commonwealth Fusion Systems is leading the charge in developing compact fusion power plants, utilizing cutting-edge high-temperature superconducting magnet technology. This focus allows for quicker and more cost-effective construction of sustainable energy sources. With projects like SPARC, which aims to be the world's first net energy fusion demonstration device, the company not only demonstrates its leadership in the energy sector but also its commitment to addressing climate change through innovative solutions.

Company Stage

Series B

Total Funding



Cambridge, Massachusetts



Growth & Insights

6 month growth


1 year growth


2 year growth



12.5 Company-wide Holidays

Our vacation policy is 'take vacation'

Our sick time policy is 'get better and try not to make others sick'

Generous parental leave policy

Health Reimbursement

Health, Dependent Care, & Limited Purpose Flexible Spending Accounts

Delta Dental, Blue 20/20 Vision optional

Wellbeing / Headspace coverage

Short-term & long-term disability

Life and AD&D insurance