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Project Engineer I Jobs in O Fallon, IL (NOW HIRING)

TRIMEDX Holdings

Imaging Engineer I

O Fallon, IL · On-site

Summary The Imaging Engineer I installs, inspects, troubleshoots, repairs, calibrates, and verifies ... Projects as assigned Regulatory Compliance - 25% * Ensure the accuracy and integrity of the ...

Trimedx

Imaging Engineer I

O Fallon, IL · On-site

Summary The Imaging Engineer I installs, inspects, troubleshoots, repairs, calibrates, and verifies ... Projects as assigned Regulatory Compliance - 25% * Ensure the accuracy and integrity of the ...

Wilson & Company

Rail Project Manager

Saint Louis, MO · On-site

$130K - $175K/yr

Mentor and develop engineers, EITs, designers, and junior project staff while promoting ... I railroads, short line railroads, industrial rail clients, intermodal facilities, rail-served ...

Esri

Software Development Engineer I

Saint Louis, MO · On-site

$75K - $129K/yr

This is a unique opportunity to grow your technical skills while contributing to projects that matter. You'll work alongside engineers and mentors in a collaborative, cross-functional environment ...

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All JobsProject Engineer I JobsProject Engineer I Jobs in O'Fallon, IL

Project Engineer I information

See O Fallon, IL salary details

$42K

$84.6K

$126.9K

How much do project engineer i jobs pay per year?

As of Aug 9, 2026, the average yearly pay for project engineer i in O'Fallon, IL is $84,553.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,000.00 and $96,500.00 per year, depending on experience, location, and employer.

What is the difference between Project Engineer I vs Project Engineer II?

AspectProject Engineer IProject Engineer II
Required CredentialsBachelor's degree in engineering or related field; some certifications preferredBachelor's degree; often more certifications or experience required
Work EnvironmentEntry-level role, supporting project teams, on-site and officeMore independent responsibilities, overseeing parts of projects
Employer & Industry UsageCommon in construction, manufacturing, civil engineeringSimilar industries, with increased scope and responsibility

The main difference between Project Engineer I and Project Engineer II lies in experience and responsibility. Project Engineer I is an entry-level position focused on supporting project tasks, while Project Engineer II involves more independent work and oversight. Both roles require similar educational backgrounds, but the II typically demands more experience or certifications. Understanding these distinctions helps candidates and employers align expectations and career progression.

What are the key skills and qualifications needed to thrive as a Project Engineer I, and why are they important?

To thrive as a Project Engineer I, you typically need a bachelor's degree in engineering, strong problem-solving abilities, and a foundational understanding of project management principles. Familiarity with CAD software, project scheduling tools like Microsoft Project, and basic knowledge of industry codes or standards is often required. Effective communication, teamwork, and adaptability help you collaborate with cross-functional teams and manage changing project requirements. These skills and qualities are essential to ensure projects are completed efficiently, safely, and within scope and budget.

What are some common challenges faced by a Project Engineer I, and how can they be addressed?

As a Project Engineer I, one common challenge is balancing multiple tasks and deadlines while ensuring project specifications are met. You may also encounter difficulties coordinating with cross-functional teams or managing changes in project scope. To address these challenges, effective time management, clear communication, and proactive problem-solving are essential. Seeking guidance from senior engineers and utilizing project management tools can also help you stay organized and meet expectations.

What does a Project Engineer I do?

A Project Engineer I is an entry-level engineering professional who assists in planning, coordinating, and executing engineering projects within an organization. They typically work under the supervision of senior engineers or project managers, helping to prepare project documentation, monitor progress, and ensure that technical standards and deadlines are met. Their role may involve collaborating with different teams, troubleshooting issues, and supporting project delivery from start to finish. This position is ideal for recent engineering graduates looking to gain practical experience and grow their project management skills.
What are popular job titles related to Project Engineer I jobs in O'Fallon, IL? For Project Engineer I jobs in O'Fallon, IL, the most frequently searched job titles are:
What cities near O'Fallon, IL are hiring for Project Engineer I jobs? Cities near O'Fallon, IL with the most Project Engineer I job openings:
Project Engineer I jobs near you
Infographic showing various Project Engineer I job openings in O'Fallon, IL as of July 2026, with employment types broken down into 83% Full Time, 5% Part Time, 1% Temporary, and 11% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $84,553 per year, or $40.7 per hour.

Civil Engineer I

Crawford Murphy & Tilly Inc

Saint Louis, MO • On-site

$70K - $76K/yr

Full-time

Medical, Retirement

Re-posted 5 days ago

Job description

Crawford, Murphy & Tilly is seeking a Civil Engineer to join our Water Resources group in the St. Louis, MO office. This is not a remote position.


We are a fast-growing firm with 500+ employees across 25 offices in 10 states serving clients through our four primary business groups:

  • Aviation
  • Surface Transportation
  • Water Resources
  • Building & Site Services


CMT provides planning, environmental, design, and construction observation phase services on projects in all four of these groups and more, which range from simple to complex. 


As a Water Resource Civil Engineer, you'll play a key role in working with senior staff, to support a wide range of municipal infrastructure projects, working closely with experienced engineers on planning, design, permitting, and construction-phase services.

What you will do:

  • Support water, wastewater, and stormwater municipal infrastructure projects from planning through construction
  • Projects may include water supply and treatment, water distribution mains, water storage, sanitary sewers, water and wastewater pump stations, wastewater treatment, and stormwater systems
  • Work on periodic construction observation in the field
  • Attend team meetings and contribute ideas
  • Developing technical reports and present collaborative ideas
  • Be open to feedback and professional growth
  • Engineering new grads: assist with plan preparation & field visits alongside experienced engineers

Here is what you’ll need:

  • Bachelor’s degree in Civil Engineering or your technical field is required. 
  • Experience with AutoCAD, Revit, Civil 3D, ArcGIS
  • Strong technical aptitude and familiarity with Microsoft Office.
  • Strong interpersonal, written, and verbal communication skills.
  • Excellent problem-solving and critical thinking skills, with a willingness to learn. 
  • Ability to work in the field, as needed, for engineering roles.
  • Possession of a current and valid driver’s license to travel to field sites, as needed, for engineering roles.

Ideally, you will also have:

  • 0-4 years of Civil Engineering or internship experience related to your field.
  • FE certification or the ability to obtain certification
  • Previous internship or co-op experience


Elevating infrastructure, together.

Crawford, Murphy & Tilly (CMT) is a civil infrastructure professional services firm working with clients and their communities to shape the future, together. Our mission is to provide superior infrastructure solutions, responsive to clients’ needs and expectations, while fostering growth and development for employees. Our dedicated team of engineers, planners, scientists, and consultants work together with clients and their communities to plan, advance, deliver, and manage civil infrastructure.

At CMT, we are looking for individuals who come to us with varied perspectives, backgrounds and worldviews.


Benefits at CMT

CMT offers a generous benefits program, focused on four pillars: Health & Wellness, Work + Life Balance, Financial Heath & Retirement, and Career Development. To learn more about the CMT benefit programs, review the information on our website, Careers - CMT Infrastructure Professionals.

The expected compensation range for this position is $70,500 - $76,000 annually. The final agreed-upon compensation is based on numerous factors, including but not limited to individual education, qualifications, prior work experience, and geographic location.


EQUAL OPPORTUNITY EMPLOYMENT (EEO) POLICY
Crawford, Murphy & Tilly (CMT) is an Equal Opportunity Employer and is committed to providing employment opportunities to minorities, females, veterans and disabled individuals, as well as other protected groups.

ACCOMMODATIONS FOR APPLICANTS
Applicants wishing to apply for an open position with CMT who require a reasonable accommodation in order to complete the application process may contact CMT’s Human Resources Department at akoester@cmtengr.com to request assistance. CMT is an Equal Opportunity Employer.

UNSOLICITED APPLICATIONS
CMT does not accept unsolicited resumes or applications. Staffing and recruiting agencies, and individuals being represented by an agency, are not authorized to use this site or to submit applications or resumes, and any such submissions will be considered unsolicited. CMT is not responsible for any fees related to unsolicited resumes/applications.