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NuScale

Develops and licenses small modular reactors

Software Engineer 4 - Commercial Nuclear

Full-TimePosted on 10/15/2026
$114k - $178.2k/yr
Senior
Bachelor of Science (BS)
Remote in USA
HybridRemote within the contiguous United States if beyond 30 miles of a NuScale office; otherwise four office days per week. Occasional business travel may be required.
Software Engineering

About the job

Requirements
  • A minimum of a Bachelor of Science degree in physics, engineering, or another technical degree field from an accredited college or university is required.
  • Working knowledge of an integrated development environment such as Visual Studio or Visual Studio Code and a revision control system such as Git is required.
  • Five or more years of professional software development experience or internship is preferred.
  • Five or more years of demonstrable software deliverables focused on modeling and simulator development is preferred.
  • Experience with thermal hydraulic and neutronic analysis software is highly desirable.
  • Previous experience with thermal hydraulic system codes such as RELAP5 and Trace.
  • Previous experience with project management systems like GitLab or GitHub.
  • Experience developing software in Fortran, C++, and/or Python.
  • Previous experience with neutronic analysis codes such as Simulate 3 and MCNP.
  • Demonstrable understanding of basic thermal hydraulic engineering principles.
  • Demonstrable understanding of basic numerical methods to solve coupled partial differential equations associated with fluid flow and heat transfer.
  • Demonstrable aptitude to read and interpret P&ID drawings.
  • Previous experience with GSE simulation software such as SimExec, JTopmeret, or JElectric.
  • Eligible to work under Department of Energy 10 CFR Part 810.
  • Ability to travel nationally and locally using common forms of transportation.
Responsibilities
  • Accurately reflect information from engineering documentation into plant models.
  • Support development, testing, and operation of the NuScale control room simulator and other software projects.
  • Develop software in accordance with NuScale-established procedures and processes to maintain configuration control.
  • Document software defects using issue-tracking software.
  • Provide recommended solutions when errors are encountered and identify common-cause issues that affect software performance.
  • Provide recommended solutions for problems using professional operational principles and company objectives.
  • Work under consultative direction toward long-range goals and objectives.
  • Collaborate with team members to ensure solutions are vetted and deliverables are high quality.
  • Perform hardware setup and maintenance, including installing computers and monitors and connecting cables; this may require limited travel outside Corvallis at company expense.
  • Perform other duties as assigned.
  • Adhere to NuScale's safety culture, model safe behavior, and influence peers to meet high standards.
  • Implement quality assurance regulations, standards, and guidelines, including 10 CFR 50 Appendix B, 10 CFR 21, and NQA-1.
Desired Qualifications
  • An ABET-accredited engineering program is preferred.
  • Additional consideration is given to candidates with experience in the GSE software suite, including SimExec and JTopmeret.

About the company

NuScale Power develops and commercializes small modular reactor (SMR) technology for carbon-free power. Its main product, the NuScale Power Module (NPM), is a 77 MWe integral PWR that combines the reactor vessel, steam generator, and pressurizer in a factory-fabricated unit, using natural circulation and passive safety, with the whole module submerged in a water-filled pool inside a seismically robust building. The VOYGR plant can house up to 12 NPMs for up to 924 MWe, allowing incremental deployment and licensing-based revenue supported by partners like Fluor and Doosan Enerbility. The goal is to provide scalable, reliable carbon-free power for electricity, district heating, desalination, and hydrogen production, with international projects in Europe and Africa.

Company Size

501-1,000

Company Stage

IPO

Headquarters

Corvallis, Oregon

Founded

2007

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Simplify's Take

What believers are saying

  • On September 1, 2026, NuScale and MillenniTEK fabricated first boron-oxide ECCS pellets.
  • Romania's RoPower advanced in 2026, and TVA continued planning up to 6 GW.
  • NuScale ended Q2 2026 with $1.9 billion cash, funding commercialization runway.

What critics are saying

  • Q2 2026 revenue was $75,000, after RoPower FEED ended in late 2025.
  • NuScale filed an additional $750 million ATM on August 11, 2026, diluting holders.
  • Pomerantz launched a securities investigation on September 17, 2026; a failed first project kills the thesis.

What makes NuScale unique

  • NuScale holds the only NRC-approved SMR design, updated again May 2025.
  • Its 77-MWe modules use passive safety and natural circulation, cutting active-system dependence.
  • The modular VOYGR design scales from one to twelve modules for different buyers.

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Benefits

  • Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

-1%
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