Plant Designer Mid Level

PAE Government Services Inc.; Oak Ridge (TN); Hybrid; USD 48,000 - 96,000; Full time

Benefits offered by this job

Health insurance

Paid time off

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Disability and life insurance

Pet insurance

Job summary

Amentum seeks a Plant Designer in Oak Ridge, Tennessee to support design calculations and create detailed drawings for steel, concrete, and masonry structures. You’ll contribute to piping layouts, equipment arrangements, and BIM integration across mechanical, civil, and structural teams.

Qualifications include an AS degree or higher and 5+ years of BIM experience in plant design. Remote work may be possible within US security guidelines; strong office presence preferred.

Qualifications

• Understanding of building mechanical systems.
• Familiar with BIM design tools and piping layouts.
• Experience with equipment arrangement deliverables.
• Awareness of schedules and budgets in plant design teams.
• Interference resolution and BIM integration with schematics.
• Collaboration with piping and structural engineering for specs and supports.
• Model outputs management for material lists and reports.
• Interface with civil for underground connections.

Responsibilities

• Assist in developing design calculations and drawings for structures.
• Develop piping systems and equipment layouts using BIM tools.
• Support pipe specifications and stress analysis with Piping Engineering.
• Coordinate with Structural Engineering on pipe support designs.
• Manage BIM model outputs, bills of materials, and reports.
• Collaborate with Civil on underground interfaces.

Skills

HVAC

Piping

Plumbing

SmartPlant 3D

BIM design tools

Equipment layout

Interference resolution

Pipe specifications

Pipe supports

Material lists

Underground interfaces

Education

AS Degree or Higher

Tools

SmartPlant 3D

BIM tools

Structural interface tools

Job description

Plan Designer Mid 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 Plant Designer to support our Oak Ridge, Tennessee office. Looking for a Plant Designer to participate in the design process, assisting in developing design calculations using standard and advanced analysis (FEA software) techniques, developing design drawings, and construction specifications for structures made of steel, concrete, and masonry. You will be able to participate and focus on new design challenges, expanding career skills while supporting the development of life changing infrastructure that improves communities all over the United States.

Job Skills

• A general understanding of Building Mechanical Systems: HVAC/Piping/Plumbing
• Develop piping systems and equipment layout in SmartPlant 3D or similar BIM design tools.
• Developing General Equipment Arrangement Deliverables.
• A basic understanding of schedules and budgets of the Plant Design and Piping Team.
• Assist with resolving interferences and developing resolutions Ensuring proper integration with other BIM tools such as Intelligent Schematics.
• Working with Piping Engineering on Pipe Specifications and Stress analysis support locations.
• Working with Structural Engineering for Pipe Support designs.
• Managing the model outputs for material lists and reports.
• Working with Civil on underground interface connections

Work Location

This position is designed to support either in-office or remote work, with a strong preference for the successful candidate to work from Amentum's office in Oak Ridge, Tennessee. Employees who reside within 50 miles of Oak Ridge will be expected to work from the Oak Ridge office. Employees who live more than 50 miles away are eligible for a remote work arrangement; however, remote employees must travel to the Oak Ridge office on a quarterly basis. Those working remotely are required to maintain a company-approved secure workspace that meets all client security requirements and is located within the United States. This U.S.-based secure work location requirement applies to all projects associated with the position.

Qualifications AS Degree or Higher 5+ years using BIM tools for Plant Design Chemical process industrial mechanical/piping design experience Nuclear piping design experience is preferred

Essential Functions

• Intermittent sitting, walking, standing, bending, squatting, climbing, kneeling, twisting, and lifting.
• Lifting requirements limited to 20 lbs. in the form of supplies, drawings, etc.
• Longest distance carried is 50 feet.
• Hand manipulation is required for simple grasping, pushing and pulling, and fine manipulation.
• Right and/or left hands utilized.
• Occasional need to reach and/or work above the shoulder, for supplies, as well as below the shoulder for same.
• No foot controls necessary.
• Must be alert to equipment in the field, there will be occasional travel, will work near construction job site equipment when in the field, occasional need to work near hazardous equipment and machinery, occasional need to walk on uneven ground, exposure to dust, gas or fumes, exposure to noise, extremes in temperature or humidity, and potential work at heights.

OTHER ESSENTIAL FUNCTIONS

• U.S. Citizenship required.
• Valid driver’s license is required.
• Must be able to work in a team atmosphere.
• Must put forward professional behavior that enhances productivity and promotes teamwork and cooperation.
• Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard on the employee or others.
• Must take and pass a pre-employment drug and background check.

Compensation Details

$35-$70 The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements.

Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law.

If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. Requests for accommodation will be considered on a case-by-case basis. If you need assistance, please reach out to [e-mail]

Until Filled