Water Resources Engineer

ASCE St. Louis Section; St. Louis (MO); Hybrid; USD 75,000 - 105,000; Full time

Job summary

M3 Engineering Group is seeking a Water Resources Engineer to join our growing St. Louis office. This role focuses on sanitary sewer design, hydrologic modeling, floodplain analysis, and project delivery for public agencies and utilities.

You will work across multiple phases and have opportunities to lead technical work. Ideal candidates are self-starters with a Civil Engineering degree, Missouri PE license (or ability to obtain), strong communication, and experience with AutoCAD Civil 3D,

Qualifications

• BS in Civil Engineering or related field.
• Missouri PE license or ability to obtain one.
• Illinois PE licensure is a plus.
• Experience delivering civil or water resources projects through design phases.
• Strong written and verbal communication skills.

Responsibilities

• Contribute to and own work on sanitary sewer and force main design.
• Perform hydrologic and hydraulic modeling and floodplain analyses.
• Prepare plans, calculations, and technical deliverables.
• Coordinate with regulatory agencies and project managers.
• Travel locally for project activities and site visits.

Skills

Independent worker

Strong communication

Analytical thinking

Team collaboration

Education

B.S. in Civil Engineering

Missouri PE license

Illinois PE licensure is a plus

Tools

AutoCAD Civil 3D

ArcGIS Pro

PCSWMM

HEC-RAS

HydroCAD

WaterCAD

Job description

M3 Engineering Group - St. Louis, MO

M3 Engineering Group is seeking a Water Resources Engineer to join our growing St. Louis office. This is a technical role for an experienced engineer who enjoys solving challenging problems, working independently, and having a meaningful role in project delivery. You will have the opportunity to work across a broad range of water resources and civil engineering projects, with an emphasis on work for public agencies and utilities.

What You’ll Do

At M3, our engineers are involved in projects from beginning to end. You will have the opportunity to contribute to and take ownership of work including:

• Sanitary sewer and force main planning and design
• Hydrologic and hydraulic modeling
• Streambank stabilization and stream restoration
• Stormwater and drainage studies and design
• Floodplain analysis and flood mitigation
• Prepare plans, specifications, calculations, reports, and other technical deliverables
• Permitting and coordination with regulatory agencies
• Apply engineering judgment to solve project-specific design and technical challenges
• Field investigations and site visits

What We’re Looking For

The ideal candidate is a self‑starter who can take ownership of technical assignments while working closely with project managers, clients, and other members of the M3 team. Basic requirements include:

• B.S. in Civil Engineering or a related field
• Missouri PE license, or the ability to obtain one
• Illinois PE licensure is a plus
• A background in civil or water resources design with experience delivering civil or water resources projects through multiple phases of design and implementation
• The ability to work independently, organize priorities, and take ownership of assignments while knowing when to collaborate and ask questions
• Willingness to tackle new challenges on a variety of projects
• Strong written and verbal communication skills
• Strong analytical andproblem‑solving abilities
• Strong experience with design software, including:
  • AutoCAD Civil 3D
  • ArcGIS Pro
  • PCSWMM
  • HEC‑RAS
  • HydroCAD
  • WaterCAD
• Valid driver’s license and ability to travel locally for project‑related activities

M3 Engineering Group does not provide employment visa sponsorship for this position. Candidates must be legally authorized to work in the United States without current or future sponsorship from M3.

Why M3

At M3, you’ll have direct access to company leadership, considerable freedom in how you approach your work, and the trust to take ownership of your responsibilities. Our project work spans transportation, water resources, stream restoration, asset management, and construction management, giving our engineers exposure to a variety of technical challenges. M3 offers a collaborative environment, professional trust, and a healthy work‑life balance while maintaining a strong focus on technical quality.

The St. Louis Office

M3’s St. Louis office is located in Downtown St. Louis in the vibrant Washington Avenue business corridor, in the historic Lammert Building.

Our team works primarily in the office, with the flexibility to work remotely as needed. Most projects are local, with travel generally taking place during regular business hours. Occasional overnight travel may be required.

Join M3

If you’re an experienced water resources engineer who enjoys technical challenges, independence, and having a direct impact on the work you produce, we’d like to hear from you.