ZipRecruiter

Log In

1

Project Engineer Jobs in O Fallon, MO (NOW HIRING)

GHD

Project Engineer

Saint Louis, MO · On-site

Our Central US Water business is growing! We're looking for a Project Engineer with expertise in water and wastewater conveyance systems to support and/or lead the design of complex infrastructure ...

Birch Creek Energy

Civil Project Engineer

Saint Louis, MO · On-site

$82K - $110K/yr

Job Overview: * Reporting to the Sr Director of Execution Engineering, the Civil Project Engineer is responsible for managing engineering from late-stage development through completion of ...

Birch Creek Energy

Civil Project Engineer

Saint Louis, MO · On-site +1

$82K - $110K/yr

Job Overview: * Reporting to the Sr Director of Execution Engineering, the Civil Project Engineer is responsible for managing engineering from late-stage development through completion of ...

Boeing

Lead Project Engineer

Hazelwood, MO · On-site

Lead Project Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring a Lead Project Engineer , Proprietary Program in Berkeley, MO . The qualified candidate will provide ...

ERL LLC

STL Project Engineer

Fenton, MO · On-site

Project Engineer Environmental Restoration LLC is a provider of cost-effective hazardous wastes material management and removal services. Our services include Emergency Response, Site Remediation ...

Boeing

Lead Project Engineer

Hazelwood, MO

Lead Project Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring a Lead Project Engineer , Proprietary Program in Berkeley, MO . The qualified candidate will provide ...

Boeing

Lead Project Engineer

Hazelwood, MO · On-site

Lead Project Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) is hiring a Lead Project Engineer , Proprietary Program in Berkeley, MO . The qualified candidate will provide ...

Consigli Construction

Project Engineer

Saint Louis, MO · On-site

Senior Project Manager / Project Executive / Director, Project Executive Supervisory Duties: Yes The Project Engineer (PE) will be primarily responsible for obtaining, distributing and reporting on ...

Consigli Construction

Project Engineer

Saint Louis, MO · On-site

Yes The Project Engineer (PE) will be primarily responsible for obtaining, distributing and reporting on critical project information to the project stakeholders. In this role, the PE will coordinate ...

Clayco

Project Engineer

Saint Louis, MO · On-site

The Role We Want You For The construction Project Engineer will be based on the construction project site and will service our clients in a multi-state region and may even travel across the country.

previous pagenext page

Showing results 21-40

All JobsProject Engineer JobsProject Engineer Jobs in O'Fallon, MO

Project Engineer information

See O Fallon, MO salary details

$42.1K

$84.8K

$127.2K

How much do project engineer jobs pay per year?

As of Aug 10, 2026, the average yearly pay for project engineer in O'Fallon, MO is $84,795.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,200.00 and $96,800.00 per year, depending on experience, location, and employer.

What is the difference between Project Engineer vs Construction Manager?

AspectProject EngineerConstruction Manager
CredentialsBachelor's in engineering or related field, certifications like PMP or EIT often preferredBachelor's in construction management, civil engineering, or related; PMP certification common
Work EnvironmentOffice and site; supports project planning and technical tasksPrimarily on-site overseeing construction activities
Employer & Industry UsageEngineering firms, construction companies, project-based industriesConstruction firms, general contractors, large infrastructure projects
Common Search & ComparisonYesYes

The main difference between a Project Engineer and a Construction Manager lies in their focus and responsibilities. Project Engineers typically handle technical aspects, planning, and supporting project execution, often working closely with engineers and designers. Construction Managers oversee the entire construction process, managing teams, schedules, and budgets on-site. Both roles require similar credentials and are integral to construction projects, but their day-to-day tasks and focus areas differ.

What are the key skills and qualifications needed to thrive as a project engineer, and why are they important?

To thrive as a Project Engineer, you need a solid background in engineering principles, project management, and a relevant engineering degree. Familiarity with CAD software, project scheduling tools like MS Project or Primavera, and certifications such as PMP or PE are often required. Strong problem-solving, communication, and leadership skills help you coordinate teams and manage project challenges effectively. These skills and qualifications are critical for delivering projects on time, within budget, and to the required quality standards.

How does a project engineer typically collaborate with other departments during a project?

Project Engineers play a central role in coordinating between engineering, procurement, and construction teams to ensure project objectives are met. They regularly communicate with design engineers to clarify technical requirements, work closely with procurement to source materials on schedule, and liaise with construction managers to address on-site challenges. Effective collaboration is essential for resolving issues quickly, maintaining timelines, and ensuring quality standards. This role often requires strong interpersonal skills and the ability to mediate between diverse teams to keep the project moving smoothly.

What is a project engineer?

There are project engineer jobs in a variety of industries. The duties of this position vary depending on the industry. For example, in construction, a project engineer is a project manager. They may have a background in engineering or construction management. Typically, they manage all aspects of the progress and the day-to-day operations on a construction site. In manufacturing, project engineers work with both the design and the engineering teams to develop and manage a manufacturing process, including overseeing the budget and deliverables. All project engineering positions require industry-specific technical knowledge and management skills.

More about Project Engineer jobs
What job categories do people searching Project Engineer jobs in O'Fallon, MO look for? The top searched job categories for Project Engineer jobs in O'Fallon, MO are:
What cities near O'Fallon, MO are hiring for Project Engineer jobs? Cities near O'Fallon, MO with the most Project Engineer job openings:
Project Engineer jobs near you
Infographic showing various Project Engineer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 86% Full Time, 8% Part Time, 3% Temporary, and 3% Contract. Highlights an 100% In-person job distribution, with an average salary of $84,795 per year, or $40.8 per hour.

Project Engineer

GHD

Saint Louis, MO • On-site

Full-time

Re-posted 9 days ago

GHD rating

8.8

Company rating: 8.8 out of 10

Based on 16 frontline employees who took The Breakroom Quiz

Job description

The importance of water to the health of our world can't be overstated. 

Water is essential for all living organisms to survive and thrive.   The water industry must continue to build resiliency and lead from the front to preserve this most essential resource. Together with our clients, we are thinking and doing things differently to help pre-empt and prepare for what's next in the water industry. Be a part of this dynamic and committed team of diverse water specialists and drive change for your community. 
You'll be able to apply our powerful global network of skills and decades of experience to create positive water outcomes that respect nature and nurture communities.

Who are we looking for?   

Our Central US Water business is growing! We're looking for a Project Engineer with expertise in water and wastewater conveyance systems to support and/or lead the design of complex infrastructure projects. This role involves being a key part of multidisciplinary teams, supporting design and construction phases, and supporting successful delivery of pipeline, pump station, and related conveyance projects. 

You will also work with a team to support client development and strategic growth of the business locally. The purpose is to build credible relationships with clients, teaming partners, and the community. This position will require a strong ability to support multiple projects and initiatives. 

In the problem-solving business, it helps to be restlessly curious to deliver community change.

Our vision is to ensure energy, water and urbanization are made sustainable for generations to come. You can lead the way into a new future for our industry, inspiring the next generation of driven and committed people in the process. 
Learn about leadership opportunities with GHD. 

Working with an energetic and high performing team, this position offers a variety of work and will see you involved in: 

  • Project engineer for planning, design, and implementation of water and wastewater conveyance projects, including but not limited to pipelines, force mains, gravity sewers, and pump stations. 
  • Coordinate with permitting agencies, contractors, internal technical teams, and clients as necessary. 
  • Prepare engineering reports, design documents, specifications, and cost estimates, as needed. 
  • Support permitting and environmental documentation processes. 
  • Conduct work to appropriate professional standards and to the firm's QA/QC requirements. Participates in QA/QC programs for other projects as requested by managers.
  • Support proposal development efforts for new business
  • Support relationships with existing and prospective clients; this includes business development, sales and marketing

What you will bring to the team:

  •  Bachelor's and/or Master's degree in environmental or civil engineering
  • Professional Engineer license in Missouri or ability to acquire upon six months of hiring date
  • 5+ years of water/wastewater design experience in municipal water, water resource, and/or conveyance projects; 
  • Experience in water and wastewater conveyance and pump station
  • Experience in executing multiple tasks while maintaining a high degree of attention to detail, schedule and budget
  • Ability to present technical information, both written and orally, in a concise and professional manner; must have strong technical writing skills

#LI-JS1

Are you interested in pursuing this role? Please submit an application!

As a multicultural organization, we encourage individual achievement and recognize the strength of a diverse workforce. GHD is an equal opportunity employer. We provide equal employment opportunities to all qualified employees and applicants without regard to race; color; religion; genetic information; national origin; sex (including same sex); sexual orientation; gender identity; pregnancy, childbirth, or related medical conditions; age; disability or handicap; citizenship status; service member status; or any other category protected by federal, state, or local law.

What GHD employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

GHD logo

About GHD

Sourced by ZipRecruiter

We are committed to solving the world's biggest challenges in the areas of water, energy and urbanisation. GHD is a global professional services company that is a leader in engineering, construction and architectural expertise. Established in 1928, we remain wholly owned by our people. We are 10,000+ diverse and skilled individuals, yet we are proudly 'One GHD' across more than 200 offices, spanning five continents - Asia, Australia, Europe, North and South America, and the Pacific region. Delivering extraordinary social and economic outcomes, we are passionate about building lasting relationships with our partners and clients.

Industry

Engineering professional services

Company size

10,000+ Employees

Headquarters location

Waterloo, ON, CA

Social media

FacebookTwitter

View All GHD Jobs

Apply