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Relap5 Jobs (NOW HIRING)

Protingent

Senior Safety V&V Engineer

Bellevue, WA · On-site

$56 - $95/hr

Significant experience with safety analysis software such as RELAP5-3D, TRACE, MELCOR, SAS4A/SASSYS-1, SAM or other nuclear system analysis software. * Familiarity with nuclear design, regulatory ...

newcleo

NY · On-site

RELAP5, CATHARE, ATHLET. * Expertise in CFD is a plus. * Experience with liquid metal reactors is a strong plus. * Strong analytical skills. * Ability to participate in team meetings and give ...

System One

Senior Safety Methods Engineer

Bellevue, WA · Remote

$37 - $74/hr

Experience with thermal hydraulic analysis tools such as RELAP5 3D, GOTHIC, SAS, or equivalent. * Proven experience in developing or improving analysis methods, including numerical schemes and ...

System One

Senior Safety Methods Engineer

Bellevue, WA · Remote

$37 - $74/hr

Experience with thermal hydraulic analysis tools such as RELAP5 3D, GOTHIC, SAS, or equivalent. * Proven experience in developing or improving analysis methods, including numerical schemes and ...

Momentum Power

Nuclear Systems Design Engineer

Manhattan, NY · On-site

$100K - $120K/yr

... RELAP5, PARCS, MELCOR, SCALE, MCNP, Serpent, OpenMC, FRAPCON, SNAP, or equivalent; Python or MATLAB. • Familiarity with 10 CFR Part 50, 52, or 53 licensing, risk-informed design, PRA, or nuclear QA ...

Protingent

Safety Analysis Engineer

Bellevue, WA · On-site

$84 - $135/hr

Significant experience with safety analysis codes such as SAS4A/SASSYS-1, GOTHIC, RELAP5, TRACE, MELCOR, MACCS, RADTRAD or equivalent. * Familiarity with nuclear design, regulatory requirements, and ...

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How much do relap5 jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for relap5 in the United States is $50.17, according to ZipRecruiter salary data. Most workers in this role earn between $39.42 and $60.82 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a RELAP5 nuclear safety analyst?

To thrive as a RELAP5 Nuclear Safety Analyst, you need a solid background in nuclear engineering, thermohydraulics, and reactor safety analysis, usually supported by an engineering degree. Proficiency in using the RELAP5 simulation software, understanding of nuclear regulatory codes, and familiarity with data analysis tools are essential technical requirements. Strong analytical thinking, attention to detail, and effective communication skills help you interpret complex data and collaborate with multidisciplinary teams. These capabilities are vital to ensure accurate safety assessments and compliance with regulatory standards in nuclear power plant operations.

What is the difference between Relap5 vs Relap5?

AspectRelap5Relap5

Since the comparison is between the same job title, there is no difference in skills, credentials, or work environment. Both roles involve using Relap5 software for thermal-hydraulic safety analysis in nuclear engineering, requiring similar certifications and industry experience. Typically, professionals in this role work in nuclear power plants, research facilities, or engineering firms focused on nuclear safety. The primary distinction may lie in specific project focus or experience level, but overall, the roles are equivalent.

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Infographic showing various Relap5 job openings in the United States as of September 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 82% Physical, and 18% Remote job distribution, with an average salary of $104,344 per year, or $50.2 per hour.

Senior Safety V&V Engineer

Bellevue, WA • On-site

Protingent
Recruiting and Staffing Services • 51 - 200 employees
Learn more about Protingentexternal

$56 - $95/hr

Contractor

Medical, Retirement, PTO

Re-posted 21 days ago

Job description


Position Title: Senior Safety V&V Engineer
Position Description: Protingent Staffing has an exciting contract Senior Safety V&V Engineer opportunity.
Job Responsibilities:
  • Perform work as a safety verification and validation engineer to develop assessment bases (benchmark, identify applicable tests, etc.), identify uncertainties in experimental data, develop benchmark models, and assess the evaluation model (EM) following the guidance in NRC's RG1.203.
  • Perform and coordinate safety computer code verification and validation test programs, including SETs and IETs, inside and outside Company.
  • Support and review the scaling analysis as needed.
  • Prepare the code benchmark documents and code applicability determination.

Job Qualifications:
  • Extensive experience in nuclear safety software verification and validation activities and system transient analysis computer code benchmark.
  • Familiarity with EMDAP and Regulatory Guide 1.203 is required.
  • Knowledgeable of nuclear systems thermal-hydraulic fundamentals as well as reactor dynamics and transient phenomena.
  • Significant experience with safety analysis software such as RELAP5-3D, TRACE, MELCOR, SAS4A/SASSYS-1, SAM or other nuclear system analysis software.
  • Familiarity with nuclear design, regulatory requirements, and risk-informed performance-based technology guidance for Non-Light Water Reactors is required.
  • Experience with SFR safety methods is highly desirable. Experience with other reactor designs, such as Light Water Reactors (LWRs), can be considered when differentiating candidates.
  • Travel Required: 0-5%.

Job Details:
  • Job Type: Contract
  • Pay Rate Range: $56-$95/hr (*Pay rates are approved based on candidate location, education and experience*)
  • Location: 100% Remote Acceptable or Bellevue, WA.
  • Export control regulations require candidates to be a U.S. Citizen, U.S. Legal Permanent Resident, or of a protected person status

Benefits Package: Protingent offers competitive salaries, insurance plan options (HDHP plan or POS plan), education/certification reimbursement, pre-tax commuter benefits, Paid Time Off (PTO), and an administered 401k plan.
About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation - from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies. We're passionate about making a positive impact by connecting exceptional talent with meaningful opportunities and helping our clients build the future.#TerraPro
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