Design Engineer III - Water Resources

apexcompanies

Fullerton, CA · Fullerton · United States

Posted Jun 19, 2026

Full-time
13 CWE

Job description

Are you driven to grow, lead, and make a meaningful impact? At Apex, we’re building more than a consulting and engineering firm—we’re creating a place where your career accelerates, your contributions matter, and your potential is fully realized. We believe your growth is our growth, which is why we invest in your development at every stage of your career. Here, you’ll work on projects that shape communities, protect the environment, and create lasting impact, all while being empowered with the autonomy and flexibility to do your best work.

Fueled by high-quality delivery, exceptional client retention, and strategic acquisitions, Apex Companies continues to rank among the fastest-growing firms in the AEC industry, recently recognized by the Zweig Group for our industry-leading growth. Our success is grounded in strong leadership, a collaborative culture, and a shared commitment to delivering exceptional outcomes.

As we continue to expand, we're looking for high-performing professionals who are ready to lead, collaborate, innovate, and create impact. At Apex, you help shape what's next. When we succeed together, we share in that success. All Apex positions are eligible for annual bonus opportunities, reinforcing our commitment to recognizing and rewarding meaningful contributions that drive our collective growth.

CWE, An Apex Company, is a dynamic, award-winning provider of consulting, engineering, technical, and construction management services. Clients trust CWE to provide innovative and sustainable solutions to solve complex problems involving civil infrastructure, water resources, and the environment. CWE is an integrated firm with a reputation for delivering engineering solutions that improve the quality of life in a fiscally responsible and holistic manner, consistent with our vision of Creating a better tomorrow, today®. We develop and implement real world solutions that are practical and cost-effective to create value for our clients and enhance our communities and environment.

Why Work for Us?

This is not a "job" – it is a career with a rapidly-growing organization in a dynamic industry that recognizes excellent performance and provides opportunities for growth and advancement. This is a fantastic opportunity to develop valuable engineering and technical skills under industry recognized leaders. In addition, as a firm that is leading the industry with innovative and creative approaches to solving environmental and engineering challenges, our employees leave the office each day knowing they have contributed to a positive movement that will improve our communities, environment, and the world.

This role is eligible for a $10,000 sign-on bonus, subject to the terms and conditions of the Company's sign-on bonus program.

We have an exciting opportunity for an outstanding individual to join our team as a Design Engineer III- Water Resources at our headquarters in Fullerton, California.

General Characteristics:

Applies broad knowledge of principles and practices in a specific practice area.
Independently evaluates, selects, and adapts standard techniques, procedures, and criteria.
May act in responsible charge of projects.
Acquires general knowledge of principles and practices of related fields, and ability to function on multidisciplinary teams.
Applies leadership and teamwork skills to effectively plan, execute, and manage scopes, schedules, and budgets to meet project stakeholder needs.
Designs a complete project, system, component, or process.
Prepares complete plans, specifications, and other project documents.
Designs and conducts investigations.
Analyzes and interprets test data.
Assigns tasks to and directs other technical and non-technical staff.
Assists with proposals to provide professional services or obtain funding for engineering projects or programs.

Critical Tasks and Responsibilities

Assist Project Management
Manage workload of other engineering staff
Meet with clients regarding work and performance of team, and regarding current and future work
Prepare project concepts through final design plans, specifications, and estimates (PS&E) bid packages
Solve design problems using engineering calculations and following general design standards
Prepare complete engineering reports related to civil site improvements, storm drainage, water distribution and transmission systems, pumping systems, pipelines, utilities, streets and roadways, bikeways, sanitary sewer collection systems, and water and wastewater facilities
Prepare and/or support reports and technical writing related to engineering projects, scopes of work, proposals, grants and other initiatives.
Prepare project drawings/designs in AutoCAD Civil3D software
Utilize AutoCAD Civil3D to establish horizontal and vertical alignments, profiles, cross sections, and perform earthwork calculations
Serve on project teams under the supervision of CWE Project Managers
Complete assignments on time and within budget and achieve firm’s quality objectives
Interact with public and private clients and stakeholders
Interact with multi-discipline and multi-office teams

Required Competencies and Qualifications

4+ Years of Experience in Civil Engineering or related field.
Bachelor’s degree in engineering from an ABET-accredited program or other Bachelor’s degree with 8+ years’ Architect-Engineering (AE) industry experience.
California Professional Engineer (PE) registration in Civil Engineering, or 8+ years of AE experience.
Proficient knowledge of AutoCAD Civil 3D software
Proficient in Microsoft Office software (Word, Excel, PowerPoint, Outlook, Project, etc.).
Proficient in ESRI ArcMap, ArcGIS Pro, ArcGIS Online, or related geospatial software
Proficient in PDF software, such as Bluebeam, Adobe Acrobat, etc.
Abilities to grasp and become proficient in new software and technologies
Ability to pay attention to detail with a high level of accuracy.
Demonstrates a strong work ethic.
Good interpersonal abilities for working in a team environment.
Excellent written and oral communication skills.
Ability to multi-task, prioritize, and take direction.
Strong analytical and problem solving skills.
Ability to self-motivate and work productively without supervision.
Proactive approach/self-starter/takes initiative
Positive attitude/team player
Ability to kneel, climb, and lift up to 50 lbs.
Valid California driver’s license and insurable driving record

Desired Competencies and Qualifications

MS, PhD or other advanced degree(s) in related fields.
Envision Sustainability Professional (ENV SP)
Member of professional practice organization (e.g. ASCE, ACEC, APWA, etc..)
Involved, organizes, and/or leads outreach and service activities with community service organizations

Apex Job Title: Engineer III

Req ID: 11754

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Annual Expected Pay Range

$90,000—$143,000 USD

We believe in equality for all and celebrate the diversity and differences of our employees, customers, and communities. We do not discriminate based on gender, race or color, ethnicity or national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status, or any other applicable characteristics protected by law. Apex aims to make apexcos.com accessible to all users. If you have a disability or special need that requires accommodation to navigate our website or complete the application process, please contact Talent@apexcos.com or (301) 417-0200. Likewise, feel free to reach out to us if you would like to view or discuss Apex policy related to equal employment opportunity or have any related concerns. EO/AA/VEV/Disabled Employer

TO ALL RECRUITMENT AGENCIES: Apex Companies does not accept unsolicited agency resumes. Please do not forward resumes for any of our job postings to our career’s sites, or to any employees of Apex Companies or affiliates. Apex Companies is not responsible for any fees related to unsolicited resumes.