Drainage Engineer

gpac; Indianapolis (IN); Hybrid; USD 80,000 - 120,000; Full time

Benefits offered by this job

Mentorship

Collaborative teams

Competitive compensation

Hybrid work options

401(k) with company match

Medical, dental, and vision

Job summary

gpac LLC. is seeking a Civil Engineer focused on drainage and stormwater to design systems, perform hydraulic analyses, and develop compliant solutions for a range of infrastructure projects.

You will work with a team of engineers and clients, applying modeling tools and design standards while contributing to schedules, budgets, and project coordination. Hybrid work options are available depending on the role.

Qualifications

• B.S. in Civil Engineering or related discipline.
• EIT or PE preferred depending on experience.
• 2–10+ years in drainage, stormwater, civil infrastructure, transportation, land development, or related engineering.
• Proficiency with Civil 3D, AutoCAD, HEC-RAS, SWMM, or similar software.
• Strong understanding of hydrology, hydraulics, stormwater systems, drainage design, and applicable design standards.

Responsibilities

• Design stormwater collection systems, storm sewers, culverts, channels, detention/retention facilities, outfalls, and related infrastructure.
• Perform hydraulic calculations and evaluate existing and proposed drainage systems.
• Develop solutions for runoff, drainage conveyance, water quality, detention, and stormwater management.
• Prepare and review drainage plans, profiles, details, calculations, specifications, and technical reports.
• Utilize hydrologic and hydraulic modeling software to evaluate drainage conditions and develop design solutions.
• Collaborate with civil engineers, surveyors, designers, environmental professionals, contractors, clients, and regulatory agencies.
• Assist with or manage schedules, budgets, deliverables, client communication, and project coordination.

Skills

Communication skills

Detail-oriented

Team collaboration

Ownership mindset

Education

B.S. in Civil Engineering

EIT or PE preferred

Tools

Civil 3D

AutoCAD

HEC-RAS

HydroCAD

HEC-HMS

SWMM

Job description

Why This Role Is Different

• Tackle everything from localized drainage improvements to complex stormwater systems, hydraulic structures, and watershed challenges.
• Work across municipal, transportation, land development, and infrastructure projects rather than being limited to one project type.
• Learn from engineers with deep technical experience while having the opportunity to take ownership of your own work.
• Develop your technical expertise while building the project management and client-facing skills needed for the next stage of your career.

What You'll Do

• Design stormwater collection systems, storm sewers, culverts, channels, detention/retention facilities, outfalls, and related infrastructure.
• Perform hydraulic calculations and evaluate existing and proposed drainage systems.
• Develop solutions for runoff, drainage conveyance, water quality, detention, and stormwater management.
• Prepare and review drainage plans, profiles, details, calculations, specifications, and technical reports.
• Utilize hydrologic and hydraulic modeling software to evaluate drainage conditions and develop design solutions.
• Collaborate with civil engineers, surveyors, designers, environmental professionals, contractors, clients, and regulatory agencies.
• Assist with or manage schedules, budgets, deliverables, client communication, and project coordination.

Who You Need

• B.S. in Civil Engineering or a related engineering discipline.
• EIT or PE preferred, depending on experience and position level.
• 2-10+ years of experience in drainage, stormwater, civil infrastructure, transportation, land development, or related engineering.
• Experience with Civil 3D, AutoCAD, HEC-RAS, HydroCAD, HEC-HMS, SWMM, or similar software.
• Strong understanding of hydrology, hydraulics, stormwater systems, drainage design, and applicable design standards.
• Able to clearly communicate technical information to project teams, clients, and other stakeholders.
• Detail-oriented, analytical, collaborative, and interested in taking ownership of increasingly complex projects.

What You Can Expect

Career GrowthWork EnvironmentBenefits - Mentorship from experienced engineers - Collaborative multidisciplinary teams - Competitive compensation - Increasing project responsibility - Flexible/hybrid options depending on role - Performance incentives - Project management opportunities - Flexible scheduling - 401(k) with company match - Support for professional licensure - Results-oriented culture - Medical, dental, and vision - Technical specialization opportunities - Strong emphasis on teamwork - PTO and paid holidays

All qualified applicants will receive consideration without regard to race, age, color, sex (including pregnancy), religion, national origin, disability, sexual orientation, gender identity, marital status, military status, genetic information or any other status protected by applicable laws or regulations.