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Job Type: Full-Time, Exempt
Locations: Helena, Bozeman, Missoula, Kalispell, or Anaconda, MT

Position Overview

Join RPA’s Streets & Highways Group as a Senior Hydraulics Engineer, providing technical leadership for transportation drainage and water resources design across Montana. In this role, you will lead hydrologic and hydraulic analyses, oversee drainage design, and serve as a key technical resource for roadway projects, supporting infrastructure that serves communities across the region. This position offers a competitive salary based on experience, along with ESOP ownership and a comprehensive benefits package.

What You’ll Do

- Lead hydrologic and hydraulic analyses for transportation projects
- Oversee design of storm sewer systems, culverts, channels, and drainage infrastructure
- Serve as the hydrology and hydraulics lead for select projects
- Review and prepare drainage reports, calculations, and technical documentation
- Provide guidance on bridge hydraulics, scour evaluations, and floodplain analysis
- Coordinate with project managers, roadway designers, and multidisciplinary teams
- Interface with MDT, FHWA, and local agencies on drainage design and approvals
- Participate in field reviews and site investigations
- Support QA/QC processes and technical review of deliverables
- Mentor and support EITs and junior engineers

What You Bring

RPA values individuals who demonstrate initiative, sound engineering judgment, and strong collaboration and communication skills. We are seeking a senior-level engineer capable of independently leading complex hydrology and hydraulics efforts.

Required Qualifications

- Bachelor’s degree in Civil Engineering or related field
- Professional Engineer (PE) license (Montana or ability to obtain within 6 months)
- 8+ years of experience in hydrology, hydraulics, or water resources
- Experience with transportation drainage and roadway design
- Experience leading hydrologic and hydraulic analyses and drainage design tasks
- Proficiency with hydrologic and hydraulic modeling and stormwater analysis software

Preferred Qualifications

- Experience with MDT and/or FHWA projects
- Familiarity with CADD and GIS platforms (Civil 3D, MicroStation, OpenRoads, ArcGIS)
- Experience with stormwater management, culvert design, and floodplain analysis
- Experience providing technical oversight and mentorship

Tools & Technologies

- HEC-RAS
- HEC-HMS
- HY-8
- Stormwater modeling software (SSA, SWMM, or similar)
- AutoCAD Civil 3D
- MicroStation / OpenRoads
- ArcGIS

Why Join RPA

RPA offers a collaborative, employee-owned environment where engineers work on real-world infrastructure projects and build long-term careers.
- 100% Employee-Owned (ESOP)
- Retirement contributions starting Day 1 (no match required)
- Competitive salary and company-wide bonus program
- Flexible schedules and paid time over 40 hours
- Support for PE licensure and professional development
- Opportunities for career growth and advancement

About RPA

Robert Peccia & Associates (RPA) is a Montana-based civil engineering, planning, and land surveying firm established in 1978. As a 100% employee-owned company, we deliver practical infrastructure solutions and work closely with public agencies and communities to support transportation and development across the region.

We foster a collaborative, low-turnover environment built on trust, technical excellence, and long-term employee investment.

Learn more about careers at RPA: https://rpa-eng.com/rpa-advantage/