Transportation Project Engineer III/IV

Mannik Smith Group; St. Louis (MO); On-site; USD 83,000 - 125,000; Full time

Benefits offered by this job

Competitive salary

Major medical, dental and vision

401K

Bonus program

Paid holidays and generous PTO

Professional development

Team of creative and talented people

Job summary

Gonzalez Companies, LLC in St. Louis, MO seeks a Transportation Project Engineer III/IV to lead the design and delivery of transportation projects, including geometrics and traffic control.

You will develop plans using MicroStation/OpenRoads or AutoCAD Civil 3D and prepare reports, cost estimates, and submittals for DOT and municipal agencies. The role requires 5–12+ years in transportation engineering, a PE license, and strong mentoring and leadership abilities.

Qualifications

• Bachelor’s degree in Civil Engineering or related field; Master’s preferred for higher levels.
• Typically 5–12+ years of transportation/ roadway engineering experience.
• Proficiency with MicroStation/OpenRoads and/or AutoCAD Civil 3D, including advanced geometric design.
• Strong understanding of DOT, LPA, or municipal design standards and submittal requirements.
• Ability to produce, review, and refine engineering calculations, design packages, and cost estimates.
• PE license required; able to serve as Engineer of Record or lead discipline tasks at IV level.
• Proven ability to mentor junior staff and coordinate project tasks.
• Strong analytical, problem-solving, and independent work skills.

Responsibilities

• Lead or contribute to design and delivery of transportation projects (geometrics, intersections, drainage, traffic control).
• Develop and review plans, models, and calculations using MicroStation/OpenRoads and AutoCAD Civil 3D.
• Prepare design reports, cost estimates, memos, specs, and submittals for DOT/municipal agencies.
• Mentor junior engineers; coordinate tasks and perform quality reviews of documents.
• Coordinate with project managers, clients, subconsultants, and authorities to meet schedules.
• Perform advanced analyses and troubleshoot design challenges.
• Support project planning, scope development, and budgeting where possible.
• Participate in QA/QC and ensure compliance with standards.
• Conduct field investigations or construction support as needed.

Skills

Mentoring

Team leadership

Analytical skills

Communication

Education

Bachelor’s degree in Civil Engineering

PE License

Tools

MicroStation/OpenRoads

AutoCAD Civil 3D

Job description

Transportation Project Engineer III/IV

Department: Transportation

Employment Type: Full Time

Location: St. Louis, MO

Compensation: $40.00 - $60.00 / hour

Description

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 currently seeking a Transportation Engineer (III/IV) to help serve our connection of clients and community. If you're hungry for knowledge, ready to make a difference and dedicated to providing personalized attention to our clients, we want you on our team.

The base salary range for this role is indicated in the posting. This range reflects the company’s good faith estimate of the compensation for this position at the time of posting. Final compensation will be determined based on factors such as experience, skills, qualifications, internal equity, and geographic location.

Your Primary Responsibilities will include

• 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.

What you'll need

• 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.

Gonzalez Offers Competitive Benefits including:

• 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
• A team of creative and talented individuals to work alongside

Gonzalez is a rapidly growing, dynamic, professional services firm specializing in civil engineering, construction management, and construction inspection. Our clientele includes large and small water, sewer, and utility districts; departments of transportation and other public transportation agencies; and municipalities throughout the Midwest.

Working primarily in the Greater St. Louis, Chicago, and Louisville metro areas, Gonzalez offers a great work environment, generous benefit packages, and opportunities to succeed in many professional disciplines.

Equal Opportunity Employer

Gonzalez Companies, LLC provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.