Assistant Project Engineer Jobs in Decatur, IL (NOW HIRING)

About Us

At Chastain and Associates, our mission is to build sustainable, functional environments where people live, work, and play. We value excellence, innovation, and connectivity. Chastain supports work-life balance with flexible hours, hybrid options, paid time off, and a culture that encourages personal and professional growth.

What You’ll Do as the Transportation Project Engineer

You will contribute to a range of civil engineering projects, including street, site, highway, and bridge developments funded by federal, state, and local agencies. In this role, you’ll have the opportunity to build strong client relationships, collaborate with public agencies and professional organizations, and expand your professional network. You’ll also continue to grow your technical expertise, gain hands-on experience, and support the development of junior engineers through mentorship.

• Design and develop geometric layouts, traffic control plans, drainage systems, and site development solutions, ensuring compliance with project requirements and industry standards.
• Interpret and apply engineering principles to plans, drawings, and specifications while maintaining quality control throughout the design process.
• Coordinate with multidisciplinary teams, including subconsultants, to support field operations such as surveys, studies, and construction observations, ensuring seamless integration of design elements.
• Assist in project planning by contributing to technical documentation, design reports, and proposal development, identifying innovative solutions to meet client and regulatory needs.
• Mentor and collaborate with technical staff, fostering skill development and teamwork to enhance design efficiency and professional growth.

What You'll Bring to the Table

Education: A Bachelors degree in Engineers (Civil Engineering is preferred)

Licensure: Ability to obtain PE license in Illinois (current license preferred)

Experience: 6+ years of hands on experience with transportation projects at a civil engineering firm based in the United States with a focus on infrastructure planning, design, and/or construction

Location: Decatur, IL; hybrid schedule is available.

Software skills: Microsoft 365, MicroStation and AutoCAD

Adaptability: excel at building, maintaining and adapting to a diverse client based

Align with our core values: We do what we say, we do what it takes, we have an outward mindset, we operate with integrity.

What We Offer You

• 401K plan with generous company match
• Annual pay increases
• Flexible work hours
• Paid-time off based on total industry tenure
• We provide four types of medical insurance plans, along with medical reimbursement and dependent care benefits
• We pay for dental insurance, and short-term/long-term disability insurance
• Employee and employee plus family life insurance options
• 7 paid holidays and 1 floating holiday
• Relocation assistance
• Cell phone reimbursement plan
• Annual boot allowance
• Verizon wireless employee discount program
• Sam's Club and Costco membership reimbursement

Ready to Make an Impact?
We’re reviewing applications on a rolling basis. Apply today to help us build communities that thrive! Don't meet every single requirement? We encourage you to apply anyway. At Chastain, we're committed to building a diverse, inclusive, and authentic workplace—and you might be just the right candidate for this or another role.

Chastain and Associates LLC is an equal opportunity employer. All applicants will be considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

Keywords:

Transportation Project Engineer, Civil Engineer, Transportation Engineer, Project Management, Roadway Design, Highway Design, Traffic Engineering, AutoCAD Civil 3D, MicroStation, OpenRoads Designer, Geometric Design, Horizontal and Vertical Alignment, Intersection Design, Roundabout Design, Traffic Signal Design, Corridor Studies, Multimodal Transportation, Public Transit Projects, Pedestrian and Bicycle Facilities, Pavement Design, Drainage Design, Stormwater Management, Signing and Striping Plans, Construction Documents, Plan Production, DOT Standards, FHWA Guidelines, MUTCD Compliance, Cost Estimating, Quantity Takeoffs, Project Scheduling, QA/QC, Federal and State Transportation Projects, Proposal Writing, Client Coordination, Regulatory Compliance, Engineering Calculations, Cross-functional Team Collaboration, PE License, Civil Engineering Degree, Transportation Planning Support, Local Agency Coordination.