Senior Mechanical Designer

RCS Staffing is seeking a Senior Mechanical Designer for a contract, full-time, on-site role in Wilmington, NC, supporting a first-of-a-kind uranium enrichment technology program. The position involves leading detailed mechanical design activities for critical nuclear process equipment, managing the full design cycle from concept to release-ready documentation. This role requires collaboration with engineering, manufacturing, and test teams within a classified, NRC-regulated environment.