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Engineering Project Manager Jobs in O Fallon, IL

Olsson

Project Manager - Roadway

Saint Louis, MO

... engineering and design needs. As a Project Manager, you will take charge of supervising and ... nurturing the professional and technical growth of team members. Your emphasis on mentorship will ...

HDR

Substation Project Manager

Saint Louis, MO · On-site

HDR Engineering is currently seeking a Substation Project Manager to join our growing and nationally ranked team of Power Delivery professionals in St. Louis, Missouri. Primary Responsibilities As ...

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All JobsEngineering Project JobsEngineering Project Manager JobsEngineering Project Manager Jobs in O'Fallon, IL

Engineering Project Manager information

See O Fallon, IL salary details

$48K

$104.8K

$158.6K

How much do engineering project manager jobs pay per year?

As of Aug 6, 2026, the average yearly pay for engineering project manager in O'Fallon, IL is $104,788.00, according to ZipRecruiter salary data. Most workers in this role earn between $84,400.00 and $121,700.00 per year, depending on experience, location, and employer.

What is the difference between Engineering Project Manager vs Mechanical Engineer?

AspectEngineering Project ManagerMechanical Engineer
CredentialsBachelor's degree in engineering, PMP certification often preferredBachelor's or master's degree in mechanical engineering
Work EnvironmentOversees projects, manages teams, coordinates with clientsDesign, analyze, and develop mechanical systems and components
Industry UsageUsed across construction, manufacturing, and engineering firmsPrimarily in manufacturing, automotive, aerospace, and product design

The main difference is that Engineering Project Managers focus on planning, coordinating, and overseeing engineering projects, while Mechanical Engineers are involved in designing and developing mechanical systems. The Project Manager role emphasizes leadership and project delivery, whereas Mechanical Engineers concentrate on technical design and analysis.

What are some common challenges engineering project managers face when leading cross-functional teams?

Engineering Project Managers often encounter challenges such as aligning team members from different disciplines, managing conflicting priorities, and ensuring effective communication across departments. They must balance technical constraints with project timelines and budgets, all while motivating diverse teams to collaborate toward shared objectives. Strong organizational and interpersonal skills are crucial for overcoming these hurdles and driving projects to successful completion.

What does an engineering project manager do?

An Engineering Project Manager oversees engineering projects from conception to completion, ensuring that they are completed on time, within budget, and meet the required quality standards. They coordinate teams of engineers, assign tasks, manage resources, handle budgeting, and communicate with stakeholders. Their responsibilities also include risk management, progress tracking, and resolving technical issues. They act as the main point of contact between clients, engineers, and other project participants, ensuring all aspects of the project align with organizational goals.

What are the key skills and qualifications needed to thrive as an engineering project manager, and why are they important?

To thrive as an Engineering Project Manager, you need a solid background in engineering principles, project management methodologies, and a relevant degree—often complemented by certifications like PMP or PE. Familiarity with project management software (such as MS Project or Primavera), budgeting tools, and engineering design systems is crucial. Strong leadership, problem-solving, and communication skills help drive team performance and stakeholder alignment. These competencies ensure projects are delivered on time, within scope and budget, while maintaining technical excellence and team cohesion.

What does an engineering project manager do?

An engineering project manager is in charge of ensuring the successful completion of a project by managing the team and all equipment. As an engineering project manager, you work closely with the clients to design and develop a detailed plan for the project. Your job duties include creating cost proposals, ensuring all safety regulations are met, and maintaining financial records. You are often involved in the entire product development process. The exact job responsibilities depend on the specifics of the project.

More about Engineering Project Manager jobs
What job categories do people searching Engineering Project Manager jobs in O'Fallon, IL look for? The top searched job categories for Engineering Project Manager jobs in O'Fallon, IL are:
What cities near O'Fallon, IL are hiring for Engineering Project Manager jobs? Cities near O'Fallon, IL with the most Engineering Project Manager job openings:
Engineering Project Manager jobs near you
Infographic showing various Engineering Project Manager job openings in O'Fallon, IL as of August 2026, with employment types broken down into 82% Full Time, 14% Part Time, 1% Contract, and 3% Nights. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution, with an average salary of $104,788 per year, or $50.4 per hour.

Project Manager, Engineering - Mission Critical

Clayco (LJC)

Saint Louis, MO

Other

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 19 days ago

Clayco rating

7.5

Company rating: 7.5 out of 10

Based on 5 frontline employees who took The Breakroom Quiz

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 Project Manager, Engineering – Mission Critical will lead multidisciplinary teams in delivering highly technical engineering design packages for Mission Critical and Data Center projects, supporting clients nationwide. This role requires collaboration with internal design and Construction teams, ensuring the successful execution of complex, fast-paced design or design-build projects that meet stringent uptime, scalability, and security requirements. The ideal candidate brings a deep understanding of high-performance environments and mission critical systems and will guide a team of engineers, architects, and designers through all project phases—from conceptual through final design and construction administration—while ensuring excellence in delivery.

The Specifics of the Role

  • Lead engineering and design teams in executing projects that meet the rigorous demands of Tier-certified and mission critical facilities, including Uptime Institute, ASHRAE, and other industry standards.
  • Manage quality and technical excellence through structured design reviews and cross-discipline coordination.
  • Collaborate with clients to define functional and operational goals, including redundancy (N+1, 2N), energy efficiency (PUE), and capacity planning.
  • Oversee and ensure accuracy in submittal reviews, RFI responses, and onsite field verifications during construction.
  • Develop and review process and MEP engineering designs tailored for data center cooling, power distribution, and systems integration.
  • Present engineering solutions and updates to stakeholders, including clients, internal teams, and external partners.
  • Maintain proficiency in Microsoft Office Suite and utilize project management tools to track and report progress.
  • Exhibit strong written and verbal technical communication skills, including report writing and leading design presentations.
  • Apply knowledge of construction principles, mission critical technologies, and evolving design methodologies.
  • Drive cross-functional coordination and leadership in a high-performance team environment.
  • Perform jobsite walks, inspections, and technical audits including climbing ladders and accessing multi-level infrastructure.

    Requirements

    • Bachelor’s Degree in Engineering (Mechanical, Electrical, or related discipline preferred).
    • 10+ years of engineering design experience, with a minimum of 3 years focused on Mission Critical / Data Center environments (colocation, hyperscale, enterprise).
    • 2+ years of experience managing multi-disciplinary design teams, ideally on fast-track design/build projects.
    • Strong understanding of power systems, cooling technologies (e.g., CRAH, CRAC, chilled water), and BMS integration.
    • Familiarity with standards and certifications such as Uptime Institute Tier levels, NFPA 70E, ASHRAE 90.1/TC 9.9, and other relevant regulatory frameworks.
    • Experience with both greenfield and retrofit data center projects is a strong plus.
    • Competitive nature with a proactive approach to solving complex engineering and coordination challenges.
    • Effective communicator and technical leader with the ability to influence outcomes and manage client relationships.
    • Detail-oriented with a commitment to delivering designs that reflect the criticality and reliability expectations of mission critical environments.
    • Ability and willingness to travel to project and owner sites across the country.

    Some Things You Should Know

    • Our clients and projects are nationwide – Travel will be required.
    • 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!
    • This position is classified as a safety-sensitive role in accordance with applicable state and federal laws. Candidates selected for this position will be subject to a comprehensive background check, which includes mandatory drug testing. 

    Why Clayco?

    • 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.

    What Clayco employees say

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