Transportation Project Engineer III/IV

Department: Transportation – Location: St. Louis, MO

About the role

Gonzalez Companies is a partner-managed firm that provides comprehensive planning, design, and construction management services to large and small water, sewer, and utility districts; departments of transportation; and municipalities. We are seeking a Transportation Engineer (III/IV) to help serve our clients and community. If you’re eager to learn, ready to make a difference, and dedicated to providing personalized attention, we want you on our team.

Responsibilities

• Lead or contribute significantly to the design and delivery of transportation projects, including roadway geometrics, intersections, pedestrian facilities, drainage, and traffic control.
• Develop and review engineering plans, models, and calculations using MicroStation/OpenRoads and/or AutoCAD Civil 3D.
• Prepare design reports, cost estimates, technical memos, specifications, and milestone submittals for DOT, LPA, or municipal agencies.
• Oversee and guide junior engineers, providing mentorship, task coordination, and quality review of design documents.
• Coordinate with project managers, clients, subconsultants, utilities, and permitting agencies to ensure project requirements and schedules are met.
• Perform advanced engineering analyses, troubleshoot design challenges, and propose effective technical solutions.
• Support or lead project planning, scope development, and discipline-level budgeting as experience allows.
• Participate in QA/QC reviews and ensure compliance with relevant DOT, municipal, and industry standards.
• Conduct occasional field investigations, site reviews, or construction support activities.

Requirements

• Bachelor’s degree in Civil Engineering or related discipline; Master’s preferred for higher-level roles.
• Typically 5–12+ years of experience in transportation or roadway engineering with demonstrated technical competency.
• Proficiency with MicroStation/OpenRoads and/or AutoCAD Civil 3D, including advanced geometric design and plan development.
• Strong understanding of DOT, LPA, or municipal design standards, processes, and submittal requirements.
• Ability to produce, review, and refine engineering calculations, design packages, cost estimates, and technical documents.
• PE license required; ability to serve as Engineer of Record or lead discipline tasks at the IV level.
• Proven ability to mentor junior staff, coordinate tasks, manage portions of projects, and communicate effectively with clients and internal teams.
• Strong analytical, problem-solving, and decision-making skills with the ability to work independently on complex assignments.

Pay

$40.00 - $60.00 per hour. This range reflects the company’s good-faith estimate at the time of posting; final compensation will be determined based on experience, skills, qualifications, internal equity, and geographic location.

Benefits

• Competitive salary
• Major medical, dental, and vision insurance
• Flexible Spending Account
• Health Savings Account
• 401K
• Bonus program
• Paid holidays and generous paid time off
• Professional development