Would You Take This Job? Hydrology & Hydraulics Engineer - Land Development/Public Infrastructure

Hydrology & Hydraulics Engineer

Employer: MacKay & Somps Civil Engineers, Inc.
Location: Pleasanton, CA (Bay Area)
Pay: Competitive salary (see posting)
Type: Full-time — Civil engineering (hydrology/hydraulics; land development & public infrastructure)

What You’ll Do

  • Design storm drain systems, open-channel/closed-conduit hydraulics, and surface hydrology solutions.

  • Perform rainfall–runoff simulations and 1-D/2-D hydraulic modeling for drainage, flood studies, and stormwater management.

  • Prepare technical reports, calculations, and supporting documentation for public agencies and private clients.

  • Coordinate with internal teams, clients, and public agencies to deliver projects from design through construction.

  • Support master drainage plans, flood control design, and utility/infrastructure projects across land development and public works.

Why It Stands Out

  • Work for a long-established Northern California firm with a strong regional track record and a variety of public and private infrastructure projects.

  • Hands-on technical work (HEC, SWMM, XPStorm/Innovyze, Civil 3D) plus exposure to project coordination and increasing responsibility toward senior roles.

  • Robust benefits package and professional development supports (bonus structure, profit sharing trust/401(k), tuition assistance, flexible schedules).

Potential Trade-offs

  • Must be licensed PE in California and authorized to work in the U.S. — this limits applicants who need sponsorship or out-of-state licensure.

  • Typical Bay Area expectations for workload and responsiveness on client projects; commuting or relocation may be required.

  • Role requires solid software/tool proficiency and technical writing — steep learning curve for candidates without prior stormwater modeling experience.

Qualifications / Requirements

  • B.S. in Civil Engineering (ABET-accredited) and PE license in California required.

  • ~3–7 years experience in storm drainage, surface hydrology, and hydraulics preferred.

  • Proficiency with AutoCAD Civil 3D, HEC-HMS/HEC-RAS, SWMM, XPStorm/Innovyze/WaterCAD, and Microsoft Office.

  • Strong technical writing, modeling, and communication skills; experience with land development and public infrastructure is highly desirable.

Perks / Benefits

  • Competitive compensation, generous bonus structure, profit sharing trust/401(k) plan, medical/vision/dental with HSA contributions, student loan paydown/tuition assistance, wellness reimbursement, and social/company events.

  • Flexible work schedules and a team-oriented culture with opportunities for career growth.

Here is the link to view more job details or apply.

Would You Take This Job? — Does a technically deep hydrology/hydraulics role at a well-established NorCal firm with PE requirement and public-agency work appeal to you?

Pleasanton tip from doing H&H here: grab Zone 7’s Drainage Design Criteria and lock in hydromodification (MRP “C.3” flow‑duration) targets before sizing storm drains/detention — saves a redesign at 65% submittal. If you’re juggling open-channel/closed-conduit, HEC‑RAS 2D to EPA‑SWMM has been smooth for me, but Zone 7 roughness/allowables can be stricter than nearby counties. @OP I’d ask if MacKay & Somps standardizes on SWMM or InfoWorks for C.3 modeling.

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One thing I learned doing H&H in Pleasanton: check tailwater against the arroyos before you lock pipe inverts — “tailwater rules the day,” and I’ve seen 100‑yr backwater push HGL above sags. Building on @frank6532, also pull the City’s Standard Plans and Storm Drain Master Plan; Caltrans’ Hydraulic Design Manual is a solid cross‑check for inlet capture/weir-orifice assumptions: Content Not Available | Caltrans. Small caveat: some reviewers still want HY‑8/HEC‑HMS printouts even if you submit SWMM, so budget for parallel calcs.

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I’d validate overland flow paths in HEC‑RAS 2D; Pleasanton reviewers like visuals — though some ask for InfoWorks: HEC-RAS.

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On the “closed‑conduit” side, I’ve had Pleasanton kick back submittals until we plotted HGL/EGL on every profile, especially at sags and junctions. If you’re sizing the storm drain system, verify whether they want 10‑yr for pipe capacity and 100‑yr for overland release this cycle — reviewers sometimes flip between city and county practice. @jennifer_ada66’s point on visuals is spot‑on; a single profile sheet with HGL and rim elevations saved us a round of comments.

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