Applied Mechanics Engineer

NAC International Inc.•Peachtree Corners, GA

1d•Hybrid

About The Position

NAC International, a global provider of nuclear fuel cycle management solutions and consulting services, is seeking a talented and motivated Applied Mechanics Engineer to join our team at our Peachtree Corners, Georgia headquarters. The ideal candidate is an analytical problem-solver with strong engineering fundamentals, sound technical judgment, and a passion for developing innovative solutions to complex mechanical challenges. This hybrid position offers the flexibility to work both on-site and remotely. NAC International is a global leader in nuclear fuel cycle management and consulting services. For more than 50 years, we have been at the forefront of nuclear innovation, delivering safe, sustainable, and forward-thinking solutions in fuel cycle technology and waste management. Our reputation is built on engineering excellence, strategic collaboration, and a strong commitment to solving complex challenges for clients around the world. Working alongside a multidisciplinary engineering team, you will perform and document advanced applied mechanics evaluations supporting the design, licensing, qualification, and operation of radioactive material (e.g. high-level radioactive waste, used and fresh nuclear fuel, etc.) transportation, storage, transfer, and handling systems. Responsibilities include nonlinear transient analyses using the explicit finite element code LS-DYNA, structural evaluations using ANSYS, development of engineering methodologies, support of licensing activities with relevant competent authorities (e.g. US Nuclear Regulatory Commission (NRC), US Department of Energy, (DOE), Canadian Nuclear Safety Commission (CNSC), etc.), and technical interaction with clients, regulators, and multidisciplinary engineering teams. Analyses are performed in accordance with applicable design specifications, quality assurance requirements, regulatory requirements, and industry codes and standards.

Requirements

Master’s degree in mechanical engineering, applied mechanics, or in a relevant engineering discipline required, Ph. D. preferred.
Minimum five (5) years of experience performing finite element analyses (Ansys preferred), including nonlinear simulations.
Minimum three (3) years of demonstrated experience with explicit FEA using LS-DYNA.
Experience in developing and evaluating finite element models for complex structural systems.
Experience in supporting engineering design, qualification, or licensing activities within regulated industries.
Strong understanding of solid mechanics, structural dynamics for both seismic and impact applications, finite element methods (both implicit and explicit), and engineering design principles.
Familiarity with ASME, ANSI, ASTM, AWS, AISC, and other related engineering codes and standards.
Understanding of engineering verification, validation, benchmarking, and quality assurance practices.
LS-DYNA required.
LS-PrePost required.
Ansys Mechanical / Mechanical APDL required.

Nice To Haves

Ph. D. preferred.
Nuclear industry experience is preferred.
Familiarity with NRC regulations, guidance documents, and licensing processes is highly desirable.

Responsibilities

Developing and executing applied mechanics analyses supporting the development, licensing, and deployment of nuclear transportation, storage, transfer, and handling systems.
Developing finite element models and analytical methodologies for structural and dynamic evaluations.
Preparing engineering calculations, technical reports, and licensing documentation.
Supporting NRC licensing activities, including SAR development and regulatory responses.
Evaluating designs for compliance with applicable requirements, codes, and standards.
Performing verification, validation, benchmarking, and independent technical reviews.
Participating in design reviews and providing engineering recommendations.
Developing analysis automation tools, workflows, and process improvements.
Interfacing with customers, regulators, suppliers, and multidisciplinary project teams on technical matters.
Providing technical leadership, mentoring, and support for junior engineers.
Performing other engineering duties as assigned.