Mechanical Engineering - Contractor

Overview We are searching for a junior engineer to join the engineering team supporting the Medium Energy Physics and Fundamental Symmetry research groups at Argonne National Laboratory. The engineering team supports the full experimental program of both groups, including the design and construction of particle detectors and atomic physics instrumentation.

The position includes structured overlap with an outgoing senior engineer and is designed to grow toward a long‑term lead engineering role supporting both research groups.

S. in mechanical, structural, or related engineering required. S. in engineering OR experience in an accelerator or physics research laboratory preferred.

Ability to carry out mechanical design and hands‑on build/assembly for large particle detector systems and other systems for physics experiments.

Proficiency with mechanical CAD software (Solidworks, Creo, Inventor, or equivalent).

Experience with a breadth of laboratory equipment.

Working proficiency with modern engineering analysis tools, including FEA (ANSYS, COMSOL, SolidWorks Simulation, or equivalent).

Basic fluency with the physics context of detector and atomic‑physics work, enough to communicate design tradeoffs with physicists (specialist physics or data‑analysis expertise is not required).

Other: The position requires mechanical aptitude and demonstrated hands‑on work (academic, internship, or professional).

Levels RD1 (Assistant Mechanical Engineer): Bachelor's and 0 years or Master's and 0 years. RD2 (Mechanical Engineer): Bachelor's and 5+ years, or Master's and 3+ years, or Doctorate and 0 years. Mechanical/Civil Engineering 1. Time Type: Full time.

Equal Employment Opportunity As an equal employment opportunity employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a safe and welcoming workplace that fosters collaborative scientific discovery and innovation. Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department.