Senior Mechanical Engineer 1 - Mission Critical

Sargent & Lundy•Richland, WA

12d•Hybrid

About The Position

This is a mid-level engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement. Support mechanical design engineering efforts on multi-disciplined project design team. Responsible for production of engineering calculations/analyses, design drawings and engineering reports. Apply mechanical engineering expertise to the design and qualification of structures, systems, and components. Produce Procurement Specifications and Construction Specifications (Mechanical sections). Attend project meetings and perform field walk downs. Mentor junior engineers.

Requirements

Must be a U.S. Citizen; Dual citizenship with a country other than the U.S. does not qualify.
Must be able to obtain US Government security clearance
BSME or MSME degree in engineering from an ABET-accredited program with a strong academic background and interest in thermodynamics, heat transfer, fluid mechanics, machine design, or thermal systems
5+ years of progressive responsible experience in mechanical engineering ideally in a nuclear environment
Working knowledge of Codes, Standards, and Regulations that apply to mechanical engineering design (eg., ASME B31 piping Codes, ASME Boiler & Pressure Vessel Code, ASME AG-1)
Experience with Finite Element Analysis or advanced engineering software (e.g., ANSYS, AutoPIPE, Datacor/AFT flow simulation, Hourly Analysis Program, Trace 700)
Experience with CAD software (e.g., Solidworks, Inventor, Microstation, AutoCAD)
Excellent written and verbal communication skills

Nice To Haves

Professional Engineer License (PE)
DOE experience preferred; commercial or Navy Field engineering and construction experience
Programming or scripting (e.g., Python, MATLAB, Mathcad, advanced Excel)
Experience with glovebox and hot cell design
A minor, certificate, or other experience in Computer Science, Artificial Intelligence, Software Engineering, or related fields that enables effective oversight of automation and agentic AI-enabled engineering workflows.

Responsibilities

Support mechanical design engineering efforts on multi-disciplined project design team
Responsible for production of engineering calculations/analyses, design drawings and engineering reports
Apply mechanical engineering expertise to the design and qualification of structures, systems, and components
Produce Procurement Specifications and Construction Specifications (Mechanical sections)
Attend project meetings and perform field walk downs
Mentor junior engineers
Lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs.
Direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.
Oversee engineers who program or script (e.g., Python, MATLAB, advanced Excel) to automate engineering tasks, with review of automated outputs.