Trilon Group

Infrastructure consulting for transportation and water

Transportation Project Engineer 3/4

Transportation EngineeringUpdated on Nov 13

Full-timeSt. Louis, MO, USA$40 - $60 /hrIn-person

About the Job

Requirements

A Bachelor's degree in Civil Engineering or a related discipline is required.
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.
A PE license is required; the candidate must be able 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.

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.

Desired Qualifications

A Master's degree is preferred for higher-level roles.

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.

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.

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.

About the Company

Trilon Group

Infrastructure consulting for transportation and water

Trilon Group provides infrastructure consulting in transportation, water, and municipal systems in the Mid-Atlantic region. It works by partnering with local governments, municipalities, and private clients to deliver planning, design support, and project management through fee-based engagements, expanding capabilities through alliances with firms like Rinker Design Associates and Wilson Engineers. The company differentiates itself with a platform-style growth approach backed by private equity and a People First culture focused on talent development. Its goal is to expand service offerings and market presence in the Mid-Atlantic by building scalable partnerships and using capital to support growth.

Company size: 51-200
Company stage: Growth Equity (Non-Venture Capital)
Total funding: $200M
Headquarters: Denver, CO
Founded: 2021

Recently Posted Jobs

Explore more opportunities at Trilon Group

See more jobs