Drainage Engineer

Mannik Smith Group; Meridian, Northern (ID, KY); Hybrid; USD 105,000 - 125,000; Full time

Benefits offered by this job

Medical, dental, vision, life, and dis

Disability insurance

Generous paid time off

401(k): 50% match up to 6%

Professional development opportunities

Licensure support

Job summary

Horrocks is seeking a Drainage Project Engineer in Meridian, Idaho, with 7–9 years of drainage and stormwater experience to lead design and delivery of infrastructure projects. This role emphasizes mentorship, collaboration with multidisciplinary teams, and delivering practical, buildable solutions for public and private sector clients.

You will design drainage systems, review reports, perform hydrologic modeling, and ensure compliance with local and national standards while communicating

Qualifications

• 7–9 years of progressive drainage and stormwater experience.
• PE licensure; actively pursuing licensure acceptable.
• Strong knowledge of hydrology, hydraulics, and drainage design.
• Experience with public and private sector clients.
• Ability to interpret survey and geotechnical reports.
• Familiar with codes, standards, and approvals.
• Excellent written and verbal communication.
• Proactive, problem-solving, detail-oriented.

Responsibilities

• Lead the design of stormwater, drainage, and flood mitigation systems.
• Prepare drainage reports, calculations, plans, and specs.
• Model hydrology and hydraulics with industry software.
• Coordinate with multidisciplinary teams to deliver integrated solutions.
• Manage project components from concept to construction support.
• Support proposals, scope definition, and business development.
• Mentor junior staff and review work for quality.

Skills

Drainage design

Project leadership

Hydrology & hydraulics

Engineering software

Public & private clients

Survey data interpretation

Regulatory knowledge

Communication skills

Detail oriented

Education

Bachelor’s degree in Civil Engineering

Tools

Civil 3D

HEC-RAS

InfoDrainage

XP-SWMM

Job description

Drainage Engineer

Department: Community Infrastructure

Employment Type: Full Time

Location: Meridian, ID

Compensation: $105,000 - $125,000 / year

Description

At Horrocks, we believe the best work comes from companies with values, that our people are our greatest resource, and that we have a responsibility to the communities where we live and work. As a Drainage Project Engineer with 7–9 years of experience, you will play a key role in the planning, design, and delivery of drainage and stormwater infrastructure projects. This position offers the opportunity to lead technical efforts, mentor junior staff, and collaborate with multidisciplinary teams to deliver high-quality, buildable solutions for both public and private sector clients

Key Responsibilities

• Lead and contribute to the design of stormwater, drainage, and flood mitigation systems for land development and infrastructure projects
• Prepare and review drainage reports, technical calculations, plans, and specifications
• Perform hydrologic and hydraulic modeling using industry-standard software (e.g., Civil 3D, HEC-RAS, HEC-HMS, XP-SWMM, InfoDrainage, or similar)
• Apply local, regional, and national drainage standards, guidelines, and regulatory requirements
• Identify and manage drainage-related risks, constraints, and opportunities throughout project development
• Manage assigned project components from concept through detailed design and construction support
• Coordinate with civil, transportation, structural, and environmental teams to deliver integrated solutions
• Review contractor submittals and respond to RFIs during construction
• Support development of cost estimates, schedules, and design optimizations
• Collaborate with clients, municipalities, and regulatory agencies to obtain approvals and resolve technical issues
• Participate in project meetings and present technical information clearly and confidently
• Support proposal preparation, scope definition, and business development efforts as needed
• Provide technical guidance and mentorship to junior engineers and designers
• Review work prepared by others to ensure quality, accuracy, and consistency
• Contribute to continuous improvement of standards, tools, and internal processes

Skills, Knowledge and Expertise

• Bachelor’s degree in Civil Engineering or related discipline
• 7–9 years of progressive experience in drainage and stormwater engineering
• Professional Engineer (PE / P.Eng. / CEng) license or actively working toward licensure
• Strong understanding of hydrology, hydraulics, and drainage design principles
• Proficiency with drainage and modeling software (e.g., Civil 3D, HEC-RAS, InfoDrainage, XP-SWMM, or equivalent)
• Experience working with public and private sector clients
• Ability to interpret survey data, geotechnical reports, and environmental constraints
• Solid knowledge of applicable codes, standards, and approval processes
• Strong written and verbal communication skillsAbility to manage priorities and work independently
• Collaborative mindset with a proactive, problem-solving approach
• High attention to detail with a focus on practical, constructible solutions

Benefits

At Horrocks, you can expect a competitive base salary and award-winning benefits. Including, but not limited to:

• Medical, dental, vision, life, and disability insurance
• Generous paid time off
• 401(k): 50% match of contribution up to 6%
• Professional development opportunities including in-house training
• Paid professional organization membership and professional licensure

For more information, visit our website at www.horrocks.com

Equal Opportunity Employer including disability and protected veteran status

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