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

Roadway Engineer I

Saint Louis, MO · On-site

$63K - $111K/yr

Parsons is now hiring for a Roadway Engineer I to join our St Louis team supporting major regional road and highway projects. In this role, you'll have the opportunity to work alongside a world-class ...

Sr. Project Engineer

Saint Louis, MO · On-site

$96K - $125K/yr

Overview: The Sr. Project Engineer role will oversee and execute the project controls and ... MasTec's Clean Energy & Infrastructure (CE&I) segment generates over $4 billion in annual revenue ...

Resident Engineer I

Saint Louis, MO · On-site

$87K - $125K/yr

GFT is seeking a Resident Engineer I to join our Construction Services Team in St. Louis, MO ! At ... We oversee every construction phase to help ensure projects are completed on schedule, within ...

Hardware Electronics Engineer I The Hardware Electronics Engineer I designs and develops motor ... In this role, you provide technical guidance to support project schedules and product cost targets ...

JOB SUMMARY The Mechanical Engineer I is responsible for the design, development, documentation ... Support Label Modification projects as defined within ESG's P3 Processes. * Review & approve ...

Summary Spire is seeking a Compliance Engineer I to work in the Pipeline Safety Compliance ... Manage the implementation of special projects related to compliance activities as assigned * All ...

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 ...

Showing results 21-40

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 6, 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:
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.

Capital Projects Manager - Engineering

Jost Chemical Co Inc

Saint Louis, MO • On-site

Urgent

$80K - $100K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired today. Applications are no longer accepted.


Jost Chemical rating

8.5

Company rating: 8.5 out of 10

Based on 7 frontline employees who took The Breakroom Quiz

22nd of 100 rated chemical manufacturers


Job description

Are you ready to embark on a career where innovation meets excellence? At Jost Chemical Company, we're on a mission to push the boundaries of chemical manufacturing, delivering high-quality products that make a positive impact on global industries.

If you're passionate about engineering, dedicated to continuous improvement, and eager to contribute to a company that values both innovation and integrity, explore this exciting opportunity with Jost Chemical. Join us in shaping the future of chemical manufacturing, where your career is more than just a job—it's a journey of growth and achievement.

Then, this position is right for you!

Founded in 1985, Jost Chemical is a global leader in the manufacture of high-purity mineral salts for the nutritional, pharmaceutical, and specialty markets. Expansion, growth of capabilities, and investment in people, laboratory resources, and production equipment have been part of Jost's culture for 40 years.

Position Summary

Jost Chemical is seeking a Project Engineer I to join our Project Engineering team. This position works under the general direction of the Director of Project Engineering in a cGMP-regulated manufacturing environment operating under Q7A standards. The Project Engineer I provides technical leadership and oversight for all phases of project planning, development, and execution, ensuring projects are completed safely, on time, and within budget.

Key Responsibilities
  • Plan, develop, coordinate, and direct a variety of engineering projects, including project scope development, budgets, schedules, task lists, goals, and performance measures.
  • Manage manufacturing line projects totaling under $10 million.
  • Lead small utility projects, facility modifications, retrofits, and improvement initiatives.
  • Interpret process flow diagrams and collaborate with Process and Production Engineers to optimize equipment layouts and piping systems.
  • Work closely with CAD and BIM (3D design) teams to coordinate modeling, detailed design, and construction drawing development.
  • Facilitate projects that support facility and manufacturing improvements while adhering to Food Safety and Active Pharmaceutical Ingredient (API) standards.
  • Oversee construction and installation activities performed by contractors and in-house trades personnel.
  • Develop cost estimates and project schedules to ensure timely and cost-effective project delivery.
  • Partner with Engineering, Maintenance, Operations, and Quality teams to minimize disruptions and achieve optimal project outcomes.
  • Coordinate with vendors and contractors to resolve issues, plan work, and maintain project momentum.
  • Identify opportunities to improve efficiency, functionality, and reliability of existing and future facilities and systems.
  • Ensure all work is performed according to established safety principles and Management of Change processes.
QualificationsEducation
  • Bachelor's degree in Chemical Engineering, Mechanical Engineering, Industrial Engineering, or a related engineering discipline.
Experience
  • Up to 7 years of project engineering experience in a manufacturing environment with a demonstrated ability to successfully deliver project-based results.
  • Experience in food or pharmaceutical manufacturing preferred.
Knowledge & Skills
  • Strong understanding of engineering principles, methods, and procedures.
  • Advanced mathematical and analytical capabilities.
  • Strong chemical process knowledge and experience.
  • Proficiency with Microsoft Office applications.
  • Ability to manage multiple projects and priorities simultaneously.
  • Excellent organizational, documentation, and attention-to-detail skills.
  • Strong communication and collaboration skills with cross-functional teams.
  • Ability to analyze complex engineering challenges and develop safe, practical, and innovative solutions.
  • Strong project planning, execution, and decision-making capabilities.
What We Offer
  • Medical, Dental, and Vision Insurance
  • Short-Term Disability, Long-Term Disability, and Life Insurance
  • 401(k) Plan with Safe Harbor Contribution
  • Paid Time Off beginning on your first day of employment
  • 9 Company-Paid Holidays annually
  • Free 24-hour on-site fitness center
  • Professional development, training, and career growth opportunities
  • A collaborative culture that values innovation, safety, and continuous improvement
Equal Opportunity Employer

Jost Chemical is an Equal Opportunity Employer and is committed to building a diverse workforce. We consider applicants and make all employment decisions without regard to race, color, religion, creed, gender, national origin, age, disability, marital status, veteran status, or any other legally protected characteristic. We are committed to recruiting and retaining the best talent in the chemical manufacturing industry.

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