Principle Modeling and Simulation Analyst

10-Mar-2026

Environmental, Safety, Health & Quality

10704BR

Who We Are

As the Savannah River Site's management and operations contractor since 2008, Savannah River Nuclear Solutions (SRNS) makes the world safer. With safety and security in the forefront, SRNS develops innovative approaches to deliver on our environmental commitments and nuclear materials challenges; supplies products and services necessary to maintain the nation's nuclear deterrent; secures nuclear materials to prevent unwanted proliferation; and transforms nuclear materials into assets and stable wasteforms. The SRNS workforce is highly capable, engaged, and adaptable to meet existing and expanding missions. SRNS employees apply superior expertise and innovative solutions to complex and challenging national and global issues. We have the knowledge to address a range of national and international nuclear issues. We make the world safer - and you can, too.

Job Family

Safeguards & Security

Discipline

Security Modeling & Simulation

Career Level

P3

Salary Range

$80,160 - $112,416

Note for Salary

This is the range within which SRNS expects the majority of qualified candidates would enter this role if offered. Actual offers may be more or less than the amounts shown depending on candidate's qualifications, experience, internal equity, and other factors.

Job Family Description

Site Security personnel safeguard individuals, property, information, and assets against potential threats and unwanted access. They monitor security systems and respond promptly to security incidents. They assess security and emergency risks and implement training and preventative measures. They ensure compliance with security procedures and requirements.

Discipline Description

Security Modeling and Simulation personnel provides preliminary and conceptual data for final Vulnerability Assessment (VA) reports, various security plans, protective force operations, and physical security requirements using a variety of sensitive unclassified/classified analytical/technical methods, tools, and techniques (i.e., Simajin) to produce a Probability of Neutralization number for each scenario. The data is used by the VA Team and other stakeholders as part of an equation to calculate System Effectiveness. MOD/SIM analyzes upgrades and support Performance Assurance Program Essential Elements. MOD/SIM conducts and documents assigned FA-18 self-assessment and leads and presents sensitive unclassified/classified formal and informal briefings and meetings.

Some Typical Duties & Responsibilities Include:

This position focuses on applying advanced theories, concepts, principles, and practices of modeling and simulation (M&S) analysis, particularly within the context of physical security and Vulnerability Assessments (VA). This includes knowledge of analytical and evaluative methods and a thorough understanding of orders, technical standards, and guides related to safeguards and security for DOE / NNSA assets. Comprehensive knowledge of, and skill in using, multiple sophisticated modeling and simulation software to model facilities, terrain, adversary attack plans, and protective force responses to determine the overall effectiveness of security systems. A core function is to assess vulnerabilities by determining the Probability of Neutralization (PN) and ensure security measures align with security interests and comply with all DOE / NNSA standards and policies. The discipline also encompasses strategic security posture analysis for cost efficiencies and contributes to complex-wide M&S policy development.

Duties & Responsibilities Include:

Perform complex modeling and simulation (M&S) for Vulnerability Assessments (VAs) and site projects. This includes building facility and terrain models, modeling attack scenarios, and replicating protective force responses using specialized programs such as AutoCAD and the Vanguard / Simajin software suite. Provide M&S and physical security expertise for modeling and analyzing elements impacting target protection, such as facility barriers, pathways, threats, systems, insiders, and additional security measures. Offer Safeguards & Security oversight, technical support, and analysis for complex facilities, including researching current information (e.g., terrain data, floor plans, protective force response plans) for modeling, and publishing M&S analysis reports. Support scenario attack and defense plan development and model in accordance with current or draft Security Incident Response Plans (SIRP).

Conduct comprehensive and thorough quality assurance analysis of all M&S files and data. Interpret simulation results, extrapolate findings, and prepare technical reports to evaluate security system adequacy for DOE / NNSA assets, ensuring compliance with all orders and standards. Analyze proposed security system changes, postures, and adjustments to maintain an acceptable Probability of Neutralization (PN) for all stakeholders.

Develop Sitewide M&S policy and guides and support the development and implementation of DOE / NNSA orders, security policies, and technical reviews of security planning documentation for both the Site and broader complex. Serve as an M&S subject matter expert for task teams, committees, working groups, and security-related projects, providing data and analytical basis for planned and emergent overall risk analysis.

Act as a liaison between the protective force, facility operations, and stakeholders for all security M&S activities and initiatives. Support Force-on-Force and Table-Top exercises as well as physical security and performance assurance programs through self-assessments for existing and future security postures. Document results, assess findings, and interface with external organizations and resources for resolutions. Collaborate with classified system administrators to maintain security software and systems for all related VA and M&S requirements. Perform all duties with consistent adherence to Site safety regulations and standards.

Required Qualifications

* Bachelor's degree in relevant field plus at least five years of experience (YOE) in a relevant role, OR Master's degree in relevant field plus at least two years of experience (YOE), OR Doctoral degree in relevant field
* Equivalencies to experience and education requirements will be considered

We'd Also Like to See

Knowledge of NNSA / DOE vulnerability assessment orders / directives. Military / Law enforcement, DoD, and S&S Contractor experience in areas such as, modeling and simulation, AutoCAD software experience, vulnerability assessment, and physical security / protection.

Career Band

Professional

Career Band Description

* Roles in this band apply the knowledge in area of expertise to analyze information; design and develop new approaches, methodologies and processes; and, provide professional advice and guidance to others in accordance with professional quality standards
* Applies a theoretical knowledge-base to work to achieve goals through own work
* Characterized by specific functional expertise typically gained through formal education
* May provide guidance to others as a project manager using technical expertise

Career Level Description

Requires in-depth conceptual and practical knowledge in own field/discipline, solving complex problems with minimal guidance and oversight.

Security Clearance Information

SRNS is required by DOE to conduct a pre-employment drug & alcohol test and background review that includes checks of personal references, credit, criminal records, and employment history, and education verifications. Positions with SRNS may require applicants to obtain and maintain a DOE L or Q-level security clearance, which requires U.S. citizenship. Factors such as pre-employment background review results, dual citizenship status, and unpaid and/or unfiled taxes may impact your ability to obtain a security clearance. This list of factors is not exhaustive; pre-employment information and security clearance requests are reviewed on a case-by-case basis.

Clearance Required to Perform Job

Q

What We Offer

Savannah River Nuclear Solutions (SRNS) Benefits team is constantly assessing trends in the benefits area to provide the best possible services to our workforce. We ensure high quality outcomes of each service provider by consistent monitoring and oversight for positive results. We also negotiate cost effective premiums that will meet the needs of our evolving workforce. Your SRNS Health & Welfare benefits provide peace of mind and financial protection for you and your family. Some of the Benefits offered to full service employees include:
- Medical, Dental, and Vision insurance options
- Critical Illness and Accident Insurance
- Employer paid life insurance with buy up options
- Employer paid Short Term and Long Term Disability
- 401(k) with Employer Match
- Various wellness programs
- Paid Time Off and Holidays
- Discounts and other supplemental benefits
SRNS employees are critical to the success of SRNS, all while making the world a safer place. The work that we do every day makes a difference.

Standards of Excellence

The SRNS vision states that we will "be the standard of excellence in nuclear materials management by delivering knowledge, innovation and experience." This is underpinned by the recognition that everything we do relies on our employees and how they demonstrate the SRNS Standards of Excellence every day. Built on the foundation of safety and security, each employee is expected to:
Model Excellence by demonstrating the highest standards and values in work and promoting them within the organization and to the customer.
Deliver Results by meeting customer expectations to ensure objectives, goals and deadlines are met while being good stewards of resources.
Energize and Recognize Teams through growing organizational strength and recognizing continued excellence.
Build Relationships by developing relationships with coworkers and customers to foster a respectful workplace.
Shape the Future by creating a diverse, innovative and integrated workforce that fosters mission success and company growth.

Note:

SRNS is an Equal Employment Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability, or protected veteran status. SRNS utilizes the Disabled Veteran Enhancement Opportunities program which is aimed at improving employment opportunities for disabled veterans at the Savannah River Site (SRS). SRNS is also committed to making our workplace accessible to individuals with disabilities and will provide reasonable accommodations, upon request, for individuals to participate in the application and hiring process. To request such an accommodation, you may contact us by phone at 803-952-8207, or by e-mail at hrrecruiting@srs.gov.

Job Expires

18-Mar-2026