Trilon Group

Infrastructure consulting for transportation and water

Transportation Project Engineer 1/2

Transportation EngineeringUpdated on Nov 13

Full-timeSt. Louis, MO, USA$30 - $55 /hrIn-person

About the Job

Requirements

A bachelor's degree in Civil Engineering or a related field.
Zero to five years of experience in transportation, roadway, or municipal infrastructure design.
Experience with or familiarity with MicroStation/OpenRoads and/or AutoCAD Civil 3D.
Understanding of geometric design principles, drainage, traffic control, and plan development.
Ability to prepare or assist with design calculations, drawings, cost estimates, and technical documentation.
Strong communication, collaboration, and problem-solving skills, with the ability to work independently as experience grows.

Responsibilities

Assist in the design and development of transportation projects, including roadways, intersections, pedestrian facilities, and traffic improvements.
Prepare engineering drawings, plans, and 3D models using CAD software such as MicroStation, OpenRoads, and AutoCAD Civil 3D.
Perform basic to intermediate engineering calculations, including horizontal and vertical alignments, grading, drainage, quantities, and traffic control layouts.
Support the preparation of project documents such as cost estimates, technical reports, design summaries, and bid packages.
Conduct field visits to support data collection, condition assessments, surveying coordination, or construction observations.
Collaborate with senior engineers, project managers, and multidisciplinary teams to develop design solutions and ensure project quality.
Assist with preparation of MoDOT, LPA, or municipal submittals and ensure adherence to applicable design standards and guidelines.
Review and interpret topographic surveys, geotechnical reports, environmental documents, and utility data.
Participate in coordination with clients, utility companies, and permitting agencies as needed.
Contribute to internal QA/QC processes, documentation, and design reviews.

Desired Qualifications

EIT/FE certification is preferred and required for the Engineer II level.
PE-track candidates are strongly preferred at the higher level.
Familiarity with DOT, LPA, or municipal design standards is a plus.

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 (I/II) 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.

Assist in the design and development of transportation projects including roadways, intersections, pedestrian facilities, and traffic improvements.
Prepare engineering drawings, plans, and 3D models using CAD software (e.g., MicroStation, OpenRoads, AutoCAD Civil 3D).
Perform basic to intermediate engineering calculations, including horizontal/vertical alignments, grading, drainage, quantities, and traffic control layouts.
Support preparation of project documents such as cost estimates, technical reports, design summaries, and bid packages.
Conduct field visits to support data collection, condition assessments, surveying coordination, or construction observations.
Collaborate with senior engineers, project managers, and multidisciplinary teams to develop design solutions and ensure project quality.
Assist with preparation of MoDOT, LPA, or municipal submittals and ensure adherence to applicable design standards and guidelines.
Review and interpret topographic surveys, geotechnical reports, environmental documents, and utility data.
Participate in coordination with clients, utility companies, and permitting agencies as needed.
Contribute to internal QA/QC processes, documentation, and design reviews.

Bachelor’s degree in Civil Engineering or related field.
0–5 years of experience in transportation, roadway, or municipal infrastructure design.
Experience or familiarity with MicroStation/OpenRoads and/or AutoCAD Civil 3D.
Understanding of geometric design principles, drainage, traffic control, and plan development.
Ability to prepare or assist with design calculations, drawings, cost estimates, and technical documentation.
EIT/FE preferred; required for Engineer II level. PE-track candidates strongly preferred at higher level.
Strong communication, collaboration, and problem-solving skills, with ability to work independently as experience grows.
Familiarity with DOT, LPA, or municipal design standards is a plus.

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

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