PSA Engineer I

Holtec International; Camden (NJ); On-site; USD 115,000 - 140,000; Full time

Benefits offered by this job

Industry‑leading benefits

Hybrid work opportunities

401(k) with company match

Paid time off and holidays

Education assistance

Job summary

Holtec International in Camden, NJ seeks a Probabilistic Safety Analysis (PSA) Engineer I to advance PSA methodologies for the SMR-300 program and collaborate with design, safety, licensing, and systems engineering teams to ensure robust risk-informed design and safe, reliable plant performance.

You will contribute to PRA model development, thermal-hydraulic analyses, event/fault tree logic, and regulatory compliance while growing with a multidisciplinary team dedicated to next-generation

Qualifications

• B.S degree in nuclear engineering, mechanical engineering, or closely related field from an accredited college or university.
• Familiarity with thermal-hydraulic behavior of light water reactors (LWRs).
• Familiarity with probabilistic risk assessment and/or thermal-hydraulic analysis methods for light-water reactors.
• Exposure to industry codes such as CAFTA, SAPHIRE, RiskSpectrum, RELAP5-3D, or MELCOR.
• 2-4 years of experience in probabilistic risk assessment and/or thermal-hydraulic safety analysis for nuclear facilities.
• Excellent technical writing, interpersonal, and communication skills.
• Eligible to work under 10 CFR Part 810

Responsibilities

• Support development of PRA modules and/or associated thermal-hydraulic analyses under the supervision of senior engineers.
• Develop Level 1 and Level 2 PRA models for internal and external events during full power and low power / shutdown operating modes.
• Thermal-hydraulic analysis specialization: support RELAP5-3D and MELCOR modeling to simulate core and containment response for severe accident scenarios that inform PRA quantifications.
• Logic modeling specialization: support development of event trees and fault trees to estimate key design risk metrics including core damage frequency (CDF) and large release frequency (LRF).
• Support PSA model maintenance and updates that occur periodically as the SMR-300 design matures
• Use PSA results to support implementation of risk-informed programs; for example, Regulatory Treatment of Non-Safety Systems (RTNSS), Design Reliability Assurance Program (D-RAP), 10 CFR 50.69 risk-informed categorization and treatment of SSCs.
• Interface with the design team to communicate and implement PSA insights
• Ensure consistency and quality of all PSA deliverables

Skills

Nuclear engineering

Mechanical engineering

PRA

Thermal-hydraulic analysis

Technical writing

Interpersonal communication

Education

B.S. in Nuclear Engineering or Mechanical Engineering

Tools

CAFTA

SAPHIRE

RiskSpectrum

RELAP5-3D

MELCOR

Job description

Probabilistic Safety Analysis (PSA) Engineer I will support the development and application of Probabilistic Safety Assessment (PSA) methodologies for Holtec International's SMR-300 advanced nuclear reactor program. Working within a multidisciplinary engineering team, this role will contribute to risk-informed design, safety analysis, licensing activities, and regulatory compliance by developing and maintaining probabilistic risk models and supporting thermal-hydraulic safety evaluations. The position offers the opportunity to work on next-generation nuclear technology while collaborating with reactor design, safety analysis, licensing, and systems engineering teams to ensure safe, reliable, and efficient plant performance.

Location: Camden, NJ (On‑site)

Primary Responsibilities

• Support development of PRA modules and/or associated thermal-hydraulic analyses under the supervision of senior engineers.
• Develop Level 1 and Level 2 PRA models for internal and external events during full power and low power / shutdown operating modes.
• Thermal-hydraulic analysis specialization: support RELAP5-3D and MELCOR modeling to simulate core and containment response for severe accident scenarios that inform PRA quantifications.
• Logic modeling specialization: support development of event trees and fault trees to estimate key design risk metrics including core damage frequency (CDF) and large release frequency (LRF).
• Support PSA model maintenance and updates that occur periodically as the SMR-300 design matures
• Use PSA results to support implementation of risk-informed programs; for example, Regulatory Treatment of Non-Safety Systems (RTNSS), Design Reliability Assurance Program (D-RAP), 10 CFR 50.69 risk-informed categorization and treatment of SSCs.
• Interface with the design team to communicate and implement PSA insights
• Ensure consistency and quality of all PSA deliverables

Requirements

• B.S degree in nuclear engineering, mechanical engineering, or closely related field from an accredited college or university
• Familiarity with thermal-hydraulic behavior of light water reactors (LWRs)
• Familiarity with probabilistic risk assessment and/or thermal-hydraulic analysis methods for light-water reactors
• Exposure to industry codes such as CAFTA, SAPHIRE, RiskSpectrum, RELAP5-3D, or MELCOR
• 2-4 years of experience in probabilistic risk assessment and/or thermal-hydraulic safety analysis for nuclear facilities
• Excellent technical writing, interpersonal, and communication skills
• Eligible to work under 10 CFR Part 810

A Generation Ahead by Design

Investing in people who power the future.

Compensation

We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self…your health, your future, and your career growth. This includes:

• Annual compensation based on skills and experience ranging from $115,000 to $140,000

Benefits

• Industry‑leading medical, dental, and vision coverage with a generous employer premium contribution and Day1 eligibility!
• FLEX Program – Hybrid work opportunities available for eligible roles, where business needs and role requirements allow
• 401(k) retirement plan with up to a 5% company match and immediate vesting to support long‑term financial security
• Paid time off and 11 paid holidays to support rest, balance, and recharge
• Wellness program offering rewards for participation in company‑supported health initiatives
• Commuter benefits supporting mass transit and commuter parking options
• Company‑paid life and AD&D insurance for added peace of mind
• Education assistance to support continued education and professional growth
• Employee support and voluntary benefits, including an Employee Assistance Program and optional coverage such as disability, legal, identity theft, and insurance programs
• Benefits eligibility and offerings may vary based on role, location, and employment status

If you’re driven to solve meaningful challenges and make a lasting impact, we invite you to build your career at Holtec— a generation ahead by design.