Expert Level Mechanical Engineer

Harvestaff; Chesterfield (MO); On-site; USD 107,000 - 117,000; Full time

Job summary

HarveStaff LLC in Chesterfield, MO seeks an Expert Level Mechanical Engineer to support a major capital project focused on piping systems. The role includes design, construction, commissioning, and technical oversight to ensure safety and code compliance.

The ideal candidate has 12+ years in mechanical engineering, strong piping knowledge, and experience with CAEPIPE. Travel onsite as project phases dictate, with collaboration across vendors and internal teams.

Qualifications

• 12+ years of engineering experience.
• Broad knowledge of mechanical codes and industry piping standards.
• Expertise in CAEPIPE pipe stress analysis software.
• Experience with piping system installation, startup, and commissioning.
• Strong understanding of piping systems and capital project execution.
• Strong communication, listening, interpersonal, and assertiveness skills.
• Ability to collaborate effectively across all organizational levels.
• Strong HSE and safety-focused mindset.
• Ability to follow applicable safety, engineering, and industry standards.
• Preferred experience with COMPASS pressure vessel modeling software.

Responsibilities

• Support the Lead Mechanical Engineer as part of the project team.
• Develop and review piping layouts, equipment arrangements, piping specifications, and design packages.
• Assist with establishing project design requirements and preparing mechanical/piping discipline estimates.
• Ensure piping designs meet process, operability, maintainability, safety, and applicable code requirements.
• Support development of construction and fabrication packages, including drawings, vendor data, and specifications.
• Assist with project design documentation and closeout activities.
• Support project commissioning, checkout, and startup activities.
• Provide technical oversight of mechanical and piping contractors.
• Collaborate with internal teams, project leadership, contractors, vendors, and other external stakeholders.

Skills

12+ years experience

Piping systems

CAEPipe

Commissioning

Safety mindset

Project execution

Strong communication

Onsite travel

Education

Bachelor’s or Master’s degree in Mechanical Engineering

Tools

COMPASS

Job description

Expert Level Mechanical Engineer

JOB-10047625

Anticipated Start Date

November 11, 2026

Location

Chesterfield, MO

Type of Employment

Contract

Employer Info

As a global leader in agriculture enterprise, our client is recognized for their multiple brands and renowned reputation. Their research and development teams combine knowledge and ingenuity to create the most innovative ideas. With their cutting-edge products, they have a common goal: improved quality of life for all.

Job Summary

If you're interested in a n Expert Level Mechanical Engineer job, then this is the best role for you! Mechanical Engineer supporting a major capital project at a chemical facility, with an emphasis on piping systems and project execution. The role will support the Lead Mechanical Engineer in design, construction, commissioning, and technical oversight activities.

Job Description

• Support the Lead Mechanical Engineer as part of the project team.
• Develop and review piping layouts, equipment arrangements, piping specifications, and design packages.
• Assist with establishing project design requirements and preparing mechanical/piping discipline estimates.
• Ensure piping designs meet process, operability, maintainability, safety, and applicable code requirements.
• Support development of construction and fabrication packages, including drawings, vendor data, and specifications.
• Assist with project design documentation and closeout activities.
• Support project commissioning, checkout, and startup activities.
• Provide technical oversight of mechanical and piping contractors.
• Collaborate with internal teams, project leadership, contractors, vendors, and other external stakeholders.

Skills Required

• 12+ years of engineering experience.
• Broad knowledge of mechanical codes and industry piping standards.
• Expertise in CAEPIPE pipe stress analysis software.
• Experience with piping system installation, startup, and commissioning.
• Strong understanding of piping systems and capital project execution.
• Strong communication, listening, interpersonal, and assertiveness skills.
• Ability to collaborate effectively across all organizational levels.
• Strong HSE and safety-focused mindset.
• Ability to follow applicable safety, engineering, and industry standards.
• Preferred experience with COMPRESS pressure vessel modeling software.

Education/Training/Certifications

• Bachelor’s or Master’s degree in Mechanical Engineering.

Additional Requirements

• Must be able to pass drug screenings and criminal background checks
• Start Time: 08:00 AM
• Ability to travel and work onsite based on project phase.
• Onsite requirements may range from approximately 1 day per month during the early project phase to up to 5 days per week during startup and commissioning.
• Candidates located in the Kansas City or St. Louis area are preferred.

Pay Rate/Salary

• Estimated Salary: 77.71 to $85.71 per hour. Compensation will be offered within this posted range based on experience, skills, and market factors.

HarveStaff LLC is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age, disability, protected veteran status, or other characteristics protected by law.