Senior Mechanical Designer

Hargrove & Associates Inc.; Chesterfield, Northern (MO, KY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Hargrove & Associates Inc. is seeking a Senior Mechanical Designer in Chesterfield, MO. The role supports complete mechanical/piping designs, including field verification and startup activities, under general supervision.

The ideal candidate will have 12+ years of relevant experience and proficiency with AutoCAD, Plant 3D, CADWorx, SmartPlant, or MicroStation. Responsibilities include developing drawings from P&IDs, GA’s, and equipment drawings, and coordinating design work with project teams

Qualifications

• Associate degree in Design or Drafting Technology, BS in Engineering or equivalent experience.
• 12 years of relevant design experience in mechanical/piping drafting and design.
• Experience with piping deliverables: P&IDs, piping plans, sections, isometrics, supports, and as-built docs.
• Proficiency with CAD/3D plant design tools (AutoCAD, Plant 3D, CADWorx, SmartPlant, MicroStation).
• Knowledge of piping codes/standards (ASME B31.3) and field verification techniques.
• Strong communication, coordination, and drawing quality-control skills.

Responsibilities

• Perform complete mechanical/piping design tasks under supervision.
• Develop piping drawings from P&ID, GA, piping specs, and equipment drawings.
• Conduct field design work to assess conditions and locate systems.
• Prepare material take-offs from piping drawings.
• Plan site design activities for optimal results and support startup.
• Lead design tasks, mentor designers, and coordinate with outside resources.

Skills

CAD tools

3D modeling

Piping design

Isometrics

Field verification

Coordination

Education

Associate degree in Engineering Tech

Tools

AutoCAD

AutoCAD Plant 3D

CADWorx

SmartPlant

MicroStation

Job description

## Senior Mechanical DesignerApply: Chesterfield, MO: Full time: Posted Yesterday: 2026-001080# What You'll Be Doing**Job Scope:** Generally responsible for performing all aspects for complete designs of mechanical/piping assignments using theoretical knowledge and practical design methods. This level is expected to assist in the design of larger and more complex mechanical/piping assignments. This work will be performed under general supervision.**Primary responsibilities will include but not be limited to:*** Familiarity with and utilizing department design and drafting standards.* Familiarity with project scope, specifications and design criteria upon assignment to a project task team.* Developing the design and drafting of moderately complex piping drawings given basic information such as P&ID’s, GA’s, piping specifications, equipment drawings, etc.* Performing field design work to ascertain current conditions, locate new systems, communicate with client personnel and assist in construction* Preparing material take-offs from piping drawings* Planning and managing your site design activities for optimum results.* Recognizing and communicating scope and design changes promptly.* On-site assistance during startup.# # Ideal Background**Education:** Associate degree in Engineering Technology or Computer-Aided Drafting is required.**Certification:** Certification is not required at this level.**Experience:** This position requires 12+ years of relevant industrial experience in mechanical/piping drafting and design.**Required Knowledge, Skills, and Abilities:*** Associate Degree in Design or Drafting Technology, BS in Engineering or Engineering Technology, or equivalent experience.* 12 years of relevant design experience, preferably in chemical, agricultural, pharmaceutical, manufacturing, process, or industrial facilities.* Demonstrated capability with piping design deliverables including P&IDs, piping plans, sections, isometrics, pipe supports, tie-in details, demolition drawings, and as-built documentation.* Proficiency with CAD and 3D modeling tools used for plant design, such as AutoCAD, AutoCAD Plant 3D, CADWorx, SmartPlant, MicroStation, or similar platforms.* Working knowledge of piping specifications, materials, valves, fittings, supports, equipment nozzles, installation details, and plant layout principles.* Familiarity with applicable piping codes, standards, and company specifications, including ASME B31.3 where applicable.* Strong field verification, spatial visualization, constructability review, interdisciplinary coordination, technical communication, and drawing quality-control skills.* Ability to lead design tasks, mentor designers, coordinate outside design resources, manage multiple project priorities, and communicate technical issues clearly.**Physical Requirements:*** Ability to sit, stand, or walk for long periods of time.# Hargrove CultureWe work to create an environment founded on trust, personal integrity, and a “team mentality” so that each person understands the value of their contributions both on a project and company-wide level. We know that each person on our team contributes to the success of our company by pairing expertise and passion to meet and exceed the needs of the clients we serve across the globe. Our safety culture protects and promotes the well-being of every person who works with us and every person touched by our work. As a 100% Teammate owned company, we proudly offer a comprehensive benefits package including, paid holidays, personal paid time off, medical, dental, vision, life, and disability insurance, 401(k), and other benefits to eligible Teammates.# Equal Opportunity Employment StatementHargrove is an Equal Opportunity/Affirmative Action employer. We do not discriminate based upon race, color, national origin, religion, age, sex (including gender, sexual orientation, pregnancy, sexual identity, marital or family status), disability, military service or obligations, veteran status, or any other characteristic protected by law.Hargrove is a drug-free workplace.The selected candidate must be authorized to work in the United States.