Water Resources Engineer

MacKay & Somps Civil Engineers, Inc.; Pleasanton (CA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Profit sharing

Tuition assistance

Excellent medical, vision, and dental

Health savings account contributions

Wellness Reimbursement

401(k) plan

Job summary

MacKay & Somps Civil Engineers, Inc. in Pleasanton, CA is seeking a Water Resources Engineer with 3–7 years of experience in storm drainage, surface hydrology, and hydraulics to grow professionally within our land development and public infrastructure portfolios.

You will design storm drainage systems, perform rainfall-runoff simulations, and use HEC models, SWMM, and other tools while coordinating with multidisciplinary teams and agencies. This role offers growth toward senior responsibilities.

Qualifications

• Bachelor of Science in Civil Engineering (ABET-accredited).
• Licensed Professional Engineer (PE) in California.
• 3–7 years of hands-on civil engineering experience in storm drainage, hydrology and hydraulics in California.
• Authorized to work in the United States.

Responsibilities

• Design storm drainage systems, open-channel/closed-conduit hydraulics, and surface hydrology solutions.
• Assist with master drainage plans, flood studies, and stormwater designs.
• Perform rainfall–runoff simulations and 1‑D/2‑D hydraulic modeling.
• Support drainage and flood control design for private developments and public infrastructure.
• Prepare technical reports, calculations, and supporting documentation.
• Coordinate with internal teams, clients, and public agencies for efficient project delivery.
• Project management and design of land development and public infrastructure projects.

Skills

Water resources engineering

Hydrology & hydraulics

Project coordination

Technical writing

CA Bay Area project experience

Education

B.S. Civil Engineering (ABET-accredited)

Tools

AutoCAD Civil 3D

HEC-HMS

HEC-RAS

SWMM

XPStorm

Innovyze

WaterCAD

MS Word

Excel

Job description

As a Water Resources Engineer at MacKay & Somps, you’ll apply your technical skills to challenging and rewarding storm drainage, flood control, and water resource projects. You’ll work alongside experienced engineers, gaining exposure to both land development and public infrastructure in California Bay Area and beyond. This is an excellent opportunity to build on your hydrology/hydraulics expertise while expanding your skills in design, modeling, and project coordination.

Depending on your experience level, you may work independently or train under the supervision of highly experienced hydrologists. In addition to hydrology and hydraulics, you will also get experience in a wide range of Civil projects including utility infrastructure projects and public and private development.

MacKay & Somps Civil Engineers is seeking a Water Resources Engineer to join our Pleasanton, CA office. This position is ideal for engineers with 3–7 years of hands‑on experience in storm drain system design, surface hydrology, and hydraulics who are looking to deepen their technical expertise and grow toward a senior‑level role.

Candidates must have a B.S. in Civil Engineering (or related field) from an ABET-accredited university and be a licensed Professional Engineer (PE) in California. Must be authorized to work in the United States.

Responsibilities may include:

• Designing storm drain systems, open-channel/closed-conduit hydraulics, and surface hydrology solutions
• Assisting with master drainage plans, flood studies, and stormwater management designs
• Performing rainfall–runoff simulations and 1-D/2-D hydraulic modeling
• Supporting drainage and flood control design for both private developments and public infrastructure projects
• Preparing technical reports, calculations, and supporting documentation
• Coordinating with internal teams, clients, and public agencies to ensure accurate, efficient project delivery
• Project management and design of Land Development and Public Infrastructure projects

We are looking for candidates with:

• 3–7 years of civil engineering experience, with a focus on storm drainage, flood control, and hydrology/hydraulics in California
• Proficiency in AutoCAD Civil 3D, Microsoft Word, and Excel
• Experience with Army Corps HEC models (HEC-HMS, HEC-RAS), SWMM, XPStorm, Innovyze, and/or WaterCAD
• Strong technical writing and verbal communication skills
• An eagerness to learn, collaborate, and take on increasing responsibility over time
• Experience in land development drainage design and public infrastructure projects is highly desirable

We value candidates that fit with our culture of strong work ethic and team camaraderie. Highly proficient engineers with proven experience who thrive in a team‑oriented, client driven work environment are strongly encouraged to apply.

Must be authorized to work in the United States.

For a complete listing of all our openings, please visit our careers webpage: https://msce.com/careers/

About MacKay & Somps

Few engineering firms match our track record in California. We are one of the largest and most successful privately held civil engineering firms in NorCal, with offices in Pleasanton (SF Bay Area) and Roseville (Sacramento Valley). Consistently listed in the top 500 design firms in the US by the ENR as we successfully integrate engineering, planning, and surveying expertise to get projects built efficiently and cost effectively. Founded in 1953, MacKay & Somps helped drive growth in Northern California after World war II and we continue that same energy today. Our multi‑disciplinary teams provide services from entitlements through construction.

MacKay & Somps is an equal opportunity employer.

MacKay & Somps’ goal is to maintain a satisfied and productive team of employees. The keys to reaching that goal are effective leadership, competitive wages and benefits, and close attention to personnel matters.

MacKay & Somps offers an excellent compensation and benefits package which includes:

• Competitive salary,
• Profit sharing trust/401(k) plan,
• Student Loan Paydown program and tuition assistance,
• Excellent medical, vision, and dental plans with Company contributions to a health savings account,
• Wellness Reimbursement Program
• and more!