Top 167 Mechanical engineer Jobs in Arnold, Mo

Mechanical Engineer I
Clayco —St. Louis, MO
- Full-time
- Bachelor of Science
- Residential
- Communication skills
- Paid holidays
- Disability insurance
Quick Apply
Mechanical Designer/Engineer
TechniPower, Inc. —Fenton, MO
- Mid-level
- Bachelor's degree
- 2 years
Quick Apply
Mechanical Packaging Specialist
Nestlé Purina —St. Louis, MO
- $67,000 - $105,000 a year
- Up to 50% travel
- Engineering
- Mid-level
- Health insurance
- 401(k) matching
Mechanical Engineer - HYBRID SCHEDULE
Case Engineering, Inc. —Fenton, MO
- $65,000 - $85,000 a year
- Full-time
- Hybrid work
- Mid-level
- Residential
- 3 years
- Health savings account
- Disability insurance
Quick Apply
Mechanical Engineer
AION Biosciences —St. Louis, MO
- Full-time
- Mid-level
Quick Apply
Mechanical Designer
BSA Lifestructures Inc —Creve Coeur, MO
- Full-time
- Hybrid work
- Office
- US work authorization
- Entry level
- Free parking
- Health insurance
Quick Apply
Mechanical Engineer
Sovereign Technologies —St. Louis, MO
- Email
- Mid-level
- Master's degree
- 1 year
Mechanical Engineer
Sunnen Products Company —St. Louis, MO
- Full-time
- No experience needed
- Office
- 1 year
Quick Apply
Mechanical Engineer - Power (Multiple Locations)
Burns & McDonnell —St. Louis, MO
- $100,000 - $165,000 a year
- Full-time
- Bachelor of Science
- Research
- Mid-level
- 401(k)
- Employee stock ownership plan
Mechanical Engineer
Legrand Group —St. Louis, MO
- Full-time
- Research
- Mid-level
- Residential
- Paid parental leave
- Paid holidays
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Mechanical Engineer PE I
ENFRA LLC —Creve Coeur, MO
- $103,175 - $132,765 a year
- Full-time
- Computer literacy
- Engineering
- Mid-level
- Opportunities for advancement
Mechanical Engineer
Elessent Clean Technologies. —St. Louis, MO
- $77,000 - $93,000 a year
- Full-time
- Travel
- US work authorization
- Organizational skills
Mechanical Engineer II - Product Engineering
Leonardo DRS —High Ridge, MO
- Microsoft Word
- Mid-level
- 2 years
- Paid parental leave
- Health savings account
7d
Civil or Mechanical Engineer - Entry Level
Farnsworth Group —St. Louis, MO
- Online Application
- Civil engineering
- Computer literacy
- Bachelor of Science
- Health savings account
- Disability insurance
Quick Apply
Mechanical Engineer
MiTek USA Inc —Earth City, MO
- Full-time
- Bachelor of Science
- ERP systems
- Mid-level
- Profit sharing
- Paid parental leave
Quick Apply
3d
Mechanical Design Engineer
Quality Stainless Products, Inc. —Maryland Heights, MO
- $70,000 - $90,000 a year
- Full-time
- ERP systems
- Office
- Analysis skills
- Health insurance
- Dental insurance
Quick Apply
2d
Senior Mechanical Engineer - HYBRID SCHEDULE
Case Engineering, Inc. —Fenton, MO
- $70,000 - $100,000 a year
- Full-time
- Hybrid work
- 5 years
- Residential
- Senior level
- Health savings account
- Disability insurance
Quick Apply
Plumbing Project Engineer
Farnsworth Group —St. Louis, MO
- Online Application
- 8 years
- Mentoring
- Senior level
- Health savings account
- Disability insurance
Quick Apply
Sr. Mechanical Engineer - HVAC/Building Systems
Farnsworth Group —St. Louis, MO
- Online Application
- Writing skills
- Research
- Mentoring
- Health savings account
- Disability insurance
Quick Apply
Senior Mechanical Design Engineer - AI Trainer
DataAnnotation —St. Louis, MO
- From $60 an hour
- Part-time
- Remote
- English
- Mid-level
- Bachelor's degree
Quick Apply
9d

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mechanical engineer jobs near arnold, mo

Mechanical Engineer I

Clayco -
St. Louis, MO

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Job Details

Full-time

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
401(k)
Flexible spending account
Paid time off
Employee assistance program
Vision insurance
Life insurance

Qualifications

Bachelor's degree in mechanical engineering
CAD software
Revit
Building information modeling (BIM) tools
Cross-functional communication

Full Job Description

About Us

Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the highest quality solutions on time, on budget, and above and beyond expectations. With $8.1 billion in revenue for 2025, Clayco specializes in the "art and science of building," providing fast track, efficient solutions for mission critical, industrial, life sciences, power & energy, aviation, commercial, institutional, residential and sports & entertainment related building projects.

About LJC

LJC Design & Engineering is a full-service architecture, engineering, and design firm committed to enhancing the quality of the human experience through integrated design. We are a team of high-energy professionals who share a passion for design, a collaborative approach, and a casual culture. We solve challenges by leveraging the collective expertise and ingenuity of the best and brightest minds across development, design, and construction.

The Role We Want You For

The Entry-Level Mechanical Engineer will support the mechanical design of mission-critical facilities, including data centers, advanced manufacturing plants, and other high-availability environments. This is an excellent opportunity for an early-career engineer to gain hands-on experience with complex mechanical systems, high-performance infrastructure, and integrated design project delivery.

In this role, you will work closely with engineers, project managers, and other disciplines to support mechanical design efforts from concept through construction. You will assist with calculations, system layouts, equipment selections, drawing production, and coordination while developing a strong foundation in mission-critical design.

The Specifics of the Role

Assist engineers in producing mechanical design deliverables including drawings and specifications.
Perform basic calculations (load calcs, system sizing, pipe pressure drop, duct pressure drop etc.) and assist with miscellaneous design tasks under the supervision of senior staff.
Coordinate with other disciplines including civil, structural, architectural, electrical, plumbing, and controls to support integrated design.
Participate in construction administration tasks, including RFI responses, submittal reviews, and field observations.
Learn and apply ICC, ASHRAE, NFPA and other relevant code series and standards.
Develop technical skills through mentorship, project exposure, and continuing education.

Requirements

BS degree in Mechanical Engineering from an ABET institution required.
0-3 years of experience in Mechanical Engineering; internship or co-op experience in mission-critical, data center, or industrial projects is a plus.
EIT certification or ability to obtain within first year of employment required.
Familiarity with AutoCAD and Revit; exposure to load calculations software such as Trane Trace, Carrier HAP or similar; exposure to CFD modeling software such as Ansys Fluent, Cadence Reality or similar is a plus.
Ability to break down complex challenges and communicate clear, actionable solutions.
Highly organized with ability to manage and pivot between concurrent projects.
Strong communication, collaboration, and problem-solving skills, with a willingness to learn in a fast-paced environment.

Some Things You Should Know

No other builder can offer the collaborative design-build approach that Clayco does.
We work on creative, complex, award-winning, high-profile jobs.
The pace is fast!

Why Clayco and LJC?

2025 Best Places to Work – St. Louis Business Journal, Los Angeles Business Journal, and Phoenix Business Journal.
2025 ENR Top 400 – Top Data Center Contractor (Top 3).
2025 ENR Top 100 Design-Build Firms – Design-Build Contractor (Top 5).
2025 ENR Top 100 Green Contractors – Green Contractor (Top 3).

Benefits

Discretionary Annual Bonus: Subject to company and individual performance.
Comprehensive Benefits Package Including: Medical, dental and vision plans, 401k, generous PTO and paid company holidays, employee assistance program, flexible spending accounts, life insurance, disability coverage, learning & development programs and more!

Compensation

The salary range for this position considers a wide range of factors in making compensation decisions including but not limited to: Education, qualifications, skills, training, experience, certifications, internal equity, and location. Compensation decisions are dependent on the facts and circumstances of each case.

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Refine Your Search

mechanical engineer jobs in arnold, mo

Mechanical Engineer I

Mechanical Designer/Engineer

Mechanical Packaging Specialist

Mechanical Engineer - HYBRID SCHEDULE

Mechanical Engineer

Mechanical Designer

Mechanical Engineer

Mechanical Engineer

Mechanical Engineer - Power (Multiple Locations)

Mechanical Engineer

Mechanical Engineer PE I

Mechanical Engineer

Mechanical Engineer II - Product Engineering

Civil or Mechanical Engineer - Entry Level

Mechanical Engineer

Mechanical Design Engineer

Senior Mechanical Engineer - HYBRID SCHEDULE

Plumbing Project Engineer

Sr. Mechanical Engineer - HVAC/Building Systems

Senior Mechanical Design Engineer - AI Trainer

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