Senior Civil Engineering Designer

Core States; California (MO); Hybrid; USD 85,000 - 120,000; Full time

Benefits offered by this job

Values-driven culture

Competitive compensation

401(k) match

Health insurance

Generous PTO

Flexible work environment

Tuition reimbursement

Job summary

Core States Group in Ontario, CA is seeking a Senior Civil Engineering Designer to lead civil site design for energy and EV infrastructure across North America. You will produce site layouts, grading, utilities, erosion control, and permitting packages in a design-build environment.

The role requires a Civil Engineering degree, 5+ years of experience, AutoCAD Civil 3D proficiency, and ability to mentor junior designers. Hybrid work option with offices in Tampa, FL; Somerville, NJ; or Ontario, CA.

Qualifications

• Bachelor’s degree in Civil Engineering or closely related discipline.
• 5+ years of progressive civil/site design experience.
• Proficiency with AutoCAD Civil 3D for site design.

Responsibilities

• Develop and oversee full civil site design packages for energy and EV infrastructure.
• Prepare grading plans, profiles, and construction details using AutoCAD Civil 3D.
• Perform or review hydrologic calculations and stormwater management reports.
• Coordinate interfaces with electrical equipment to ensure constructible layouts.
• Lead day-to-day work planning for a small team of civil designers.
• QA/QC reviews of drawings and calculations.
• Prepare permit-ready drawing sets and liaison with AHJs and utilities.
• Site visits and field investigations.

Skills

AutoCAD Civil 3D

Stormwater design

Hydrology calculations

Microsoft Office

Education

Bachelor’s degree in Civil Engineering

Tools

HydroCAD

Hydraflow

ICPR/StormWise

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

Senior Civil Engineering Designer

Full Time Professional Ontario, CA, Ontario, CA, US

8 days ago Requisition ID: 1489

Salary Range: $40.00 To $58.00 Hourly

At Core States Group, the work you do matters to the clients we serve, the communities we support, and the teams who rely on one another to deliver with excellence. Our Cause is powerful: to create a world where all environments improve everyday life.

This role is paid on an hourly basis with a range of $40-$58 and is eligible for overtime in accordance with applicable laws. The expected approximate annualized compensation range is $85,000–$120,000.

Why Professionals Choose Core States Group

Here’s what you can expect:

• VALUES-DRIVEN CULTURE – A workplace rooted in Integrity, Service, Inclusion, Excellence, and Innovation. Our Core Values guide how we work, how we treat each other, and how we show up for our clients every day.
• COMPENSATION – Competitive wages and bonus programs, including professional licensure bonuses.
• RETIREMENT – A strong 401(k) match, with immediate vesting, to help you invest in your future and build your retirement savings with confidence.
• HEALTHCARE – Competitive health benefits including HSA with employer contribution, life insurance options, and supplemental coverage options, giving you the flexibility to select the coverage that best fits your needs and lifestyle.
• VACATION – Generous PTO to help you recharge, relax, and maintain a healthy work-life balance.
• PERKS – Team wellness challenges, free virtual gym app, wholesale club membership reimbursement, employee recognition programs, paid parental leave and much more!
• FLEXIBLE WORK ENVIRONMENT – A flexible work environment that empowers you to do your best work, whether you’re in the office, working remotely, or blending both to support your responsibilities.
• TUITION REIMBURSEMENT – support your growth with tuition reimbursement to help advance your education and professional development.

Summary of Position

As a Senior Civil Engineering Designer supporting our Energy / EPC business unit, you will lead civil design efforts for energy and ZEV infrastructure projects across North America. You will own the production of site layout, grading, utilities, erosion and sediment control, stormwater management, and permitting packages for energy and EV infrastructure projects in a design-build environment.

Responsibilities

Technical Design

• Develop and oversee full civil site design packages, including site layout, grading, drainage, utilities, access, and code-compliant details for energy and EV infrastructure projects
• Prepare grading plans, profiles, sections, and construction details using AutoCAD Civil 3D
• Perform or review civil and hydrologic calculations, including stormwater conveyance and detention, utility sizing, and road and parking design, using tools such as HydroCAD, Hydraflow, ICPR/StormWise, and similar software
• Prepare erosion and sediment control plans, SWPPPs, and stormwater management reports in accordance with local, state, and federal standards
• Coordinate civil interfaces with electrical equipment (transformers, switchgear, inverters, BESS pads, EV chargers, generators, hydrogen systems, etc.) to ensure safe, constructible layouts in tight sites

Leadership and Mentoring

• Lead day-to-day work planning for a small team of civil designers, assigning tasks, reviewing work, and providing technical coaching
• Perform QA/QC reviews of drawings and calculations prepared by junior staff to ensure consistency with company standards and project requirements
• Help develop and maintain civil design standards, templates, and best practices for Energy / EPC projects

Coordination and Project Delivery

• Collaborate closely with Civil Project Engineers, Electrical Engineers, Structural Engineers, Geotechnical Engineers, Construction Project Managers, and permitting specialists as part of an integrated EPC team
• Support Project Managers with scoping, design schedules, and design milestone delivery
• Research AHJ requirements and design standards, and coordinate with authorities having jurisdiction through entitlement, permitting, and construction phases
• Prepare permit-ready drawing sets and technical documentation for submittal to AHJs and utility companies
• Respond to RFIs, submittals, and construction questions; provide constructability input to field teams

Field and Client Support

• Conduct site walks and field investigations to verify existing conditions, collect measurements, and assess constraints
• Provide civil support to construction and commissioning teams to help ensure design intent is maintained, and field changes are captured in as-built documentation

Qualifications

We’re looking for talented professionals who are eager to grow their skills and contribute to high-quality, meaningful work. If you’re driven, collaborative, and ready to take the next step in your career, we want to hear from you. The following qualifications will help you succeed in this role:

• Bachelor’s degree in Civil Engineering or closely related discipline, or equivalent combination of education and experience
• Approximately 5+years of progressive site / civil design experience, preferably including commercial or infrastructure projects (fueling, convenience, industrial, energy, or EV charging)
• Proficiency with AutoCAD Civil 3D for site design, grading, and plan production
• Strong understanding of site development fundamentals, including grading, drainage, stormwater management, utilities, and access design
• Experience producing complete plan sets and supporting calculations for permitting and construction
• Demonstrated experience reviewing and mentoring the work of junior designers
• Proficiency with Microsoft Office (Excel, Word, Outlook, Teams)

Preferred

• Experience with distributed generation, microgrids, battery energy storage, solar, generators, or ZEV / EV charging infrastructure
• Experience in a design-build or EPC environment, coordinating actively with construction teams
• Experience with stormwater/hydrology tools such as HydroCAD, Hydraflow, HEC-RAS, ICPR/StormWise, or similar
• E.I.T. preferred; P.E. in Civil Engineering is a plus
• Ability to travel periodically for site visits and project meetings

Work Location

This is a hybrid (1 or 2 days a week in the office) position based out of the following Core States Group offices: Tampa, FL, Somerville, NJ, or Ontario, CA.

Overview

Core States Group is an integrated architecture, engineering, and construction firm that designs, builds, and manages programs and projects across North America. The company delivers integrated solutions for many of the world’s leading brands across markets such as Distributed Generation, Zero-Emission Vehicle (ZEV) Infrastructure, Financial, Convenience, Grocery, Restaurants, Retail, Industrial, Housing, and more.

Within our rapidly growing Energy / EPC business, we provide full life-cycle solutions for distributed generation, microgrids, battery energy storage, solar, generators, hydrogen fueling, and electric vehicle charging infrastructure.

A Note to Candidates

Please do not be concerned if you do not meet every requirement. At Core States Group, we are dedicated to building a diverse and inclusive workplace, so if you are excited about this role but your experience does not align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.

This position will remain open until it is filled.