Top 136 Mechanical engineer Jobs in Roxana, Il

Mechanical Engineer I
Clayco —St. Louis, MO
- Full-time
- Bachelor of Science
- Residential
- Communication skills
- Paid holidays
- Disability insurance
Quick Apply
Product Development Engineer
National Cart Company —Saint Charles, MO
- Extended hours
- Engineering
- Analysis skills
- Quality control
- Profit sharing
- Paid holidays
Quick Apply
10d
Senior Mechanical Engineer - Bridgeton, MO
D&Z Federal Division —Bridgeton, MO
- $38.50 - $55.00 an hour
- Contract
- 5 years
- Research
- Senior level
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Field Service Engineer - Medical Imaging (Field: St Louis, MO)
Philips —St. Louis, MO
- $29 - $45 an hour
- Overtime
- Hospital
- Mid-level
- Office
- Health savings account
- Employee stock purchase plan
10d
Development Engineering II
Ingersoll Rand —Earth City, MO
- $65,000 - $135,000 a year
- Full-time
- Data analysis skills
- Research
- Mid-level
- Health insurance
- Dental insurance
1d
Winchester Equipment Mechanical Engineer
Olin Corporation —East Alton, IL
- $120,900 - $125,000 a year
- Monday to Friday
- 5 years
- Analysis skills
- Continuous improvement
Qualified Mechanical / Civil Engineers
OPENSO ENGINEERING —Edwardsville, IL
- Computer Science
- Master's degree
- Bachelor's degree
Evaluation Engineer
Hussmann Corporation —Bridgeton, MO
- Full-time
- Bachelor of Science
- Analysis skills
- Communication skills
- Health savings account
- Health insurance
8d
Mechanical Engineer
Sovereign Technologies —St. Louis, MO
- Email
- Mid-level
- Master's degree
- 1 year
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
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Design & Product Engineer II
FS-Curtis —St. Louis, MO
- Full-time
- Research
- Mid-level
- Microsoft Office
Quick Apply
Principal Mechanical R&D Engineer
Cardinal Health —Hazelwood, MO
- $94,900 - $135,600 a year
- Analysis skills
- No degree
- Mentoring
- Paid parental leave
- Health savings account
9d
Mechanical Engineer
Elessent Clean Technologies. —St. Louis, MO
- $77,000 - $93,000 a year
- Full-time
- Travel
- US work authorization
- Organizational skills
Design Engineer
SR Precision Holdings LLC —Troy, IL
- $60,000 - $75,000 a year
- Overtime
- Background check
- Mid-level
- Health insurance
- Dental insurance
Quick Apply
Management Associate - Mechanical Maintenance
United States Steel Corporation —Granite City, IL
- $75,000 - $80,000 a year
- Weekends as needed
- Writing skills
- 3 years
- Continuous improvement
Mechanical Engineer
Arch Precision —Earth City, MO
- Full-time
- Mid-level
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
Quick Apply
Sr Engineer, Fixed Equipment, Wood River Refinery
Phillips 66 —Roxana, IL
- $141,300 - $172,700 a year
- Extended hours
- Microsoft Outlook
- Mid-level
- 3 years
- Health savings account
- Health insurance
3d

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mechanical engineer jobs near roxana, il

Mechanical Engineer I

Clayco -
St. Louis, MO

Quick Apply

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 roxana, il

Mechanical Engineer I

Product Development Engineer

Senior Mechanical Engineer - Bridgeton, MO

Field Service Engineer - Medical Imaging (Field: St Louis, MO)

Development Engineering II

Winchester Equipment Mechanical Engineer

Qualified Mechanical / Civil Engineers

Evaluation Engineer

Mechanical Engineer

Mechanical Engineer

Mechanical Designer

Design & Product Engineer II

Principal Mechanical R&D Engineer

Mechanical Engineer

Design Engineer

Management Associate - Mechanical Maintenance

Mechanical Engineer

Mechanical Engineer - Power (Multiple Locations)

Mechanical Engineer

Sr Engineer, Fixed Equipment, Wood River Refinery

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