Mechanical Designer Jr.

Mechanical Designer Jr. at Amentum in Scoville, Idaho, United States Job Description Jr-Level Mechanical Designer Amentum is a global leader in advanced engineering and innovative solutions, supporting critical missions across defense, intelligence, energy, and civilian sectors. Our people are our competitive advantage, driven by purpose, collaboration, and a commitment to delivering excellence for our customers and communities. We are currently seeking a Jr-Level Mechanical Designer to support our Nuclear Project - Oak Ridge.

Description:

As a Jr-level mechanical designer, you will support the design and development of HVAC, piping, and plumbing systems for industrial and government facilities, including nuclear and DOE projects. Working under the supervision of Senior Designers and Mechanical Engineers, this role contributes to the development of construction-level design deliverables that meet project, quality, and safety requirements. This role is ideal for an early-career designer who is building technical skills in CAD and plant design tools, enjoys collaborative work, and is eager to grow within a multidisciplinary engineering environment.

Key Responsibilities:

+ Develop 2D drawings for HVAC equipment, ductwork, piping, and plumbing systems using AutoCAD, MicroStation, or similar tools + Prepare design deliverables under supervision, including: + Equipment layouts + Duct and piping plans + Isometric drawings + Sections, and details + Incorporate engineer and senior designer markups and redlines into accurate drawings + Coordinate designs with mechanical engineers and other disciplines (structural, electrical, process, I&C) + Ensure proper integration of mechanical designs with other disciplines + Apply established design standards, procedures, and quality requirements + Perform self-checks and support revisions to drawings as directed + Participate in field walkdowns or site coordination activities when needed

Basic Qualifications:

+ High School Diploma or GED (Associate Degree in Drafting, Design, or Engineering Technology preferred) + 0 to 5 years of experience in mechanical design for industrial or government facilities + Experience with HVAC, piping, and plumbing layout design + Working knowledge of 3D design software such as AutoCAD and MicroStation + Ability to learn new software tools, workflows, and design standards + Strong attention to detail and willingness to accept technical guidance and feedback + Effective communication skills and ability to work in a team-based environment •

Job Posting:

JC291528718

Posted On:

May 08, 2026

Updated On:

May 08, 2026