Full-Time

Design Engineer 3

Water Resources

Updated on 8/18/2026

Apex Companies

Apex Companies

1,001-5,000 employees

National environmental consulting and engineering firm

Compensation Overview

$90k - $143k/yr

+ Annual bonus + $10,000 sign-on bonus

Fullerton, CA, USA

In Person

Bachelor's, Master's, PhD

Category
Architecture & Civil Engineering (1)
Required Skills
Microsoft Office
AutoCAD
Word/Pages/Docs
Excel/Numbers/Sheets
Microsoft Outlook
PowerPoint/Keynote/Slides

Get referred to Apex Companies

See people who can refer or advise you

Requirements
  • At least 4 years of experience in civil engineering or a related field.
  • A bachelor's degree in engineering from an ABET-accredited program, or another bachelor's degree with at least 8 years of Architect-Engineering industry experience.
  • California Professional Engineer registration in Civil Engineering, or at least 8 years of Architect-Engineering experience.
  • Proficient knowledge of AutoCAD Civil 3D software.
  • Proficiency in Microsoft Office software, including Word, Excel, PowerPoint, Outlook, and Project.
  • Proficiency in ESRI ArcMap, ArcGIS Pro, ArcGIS Online, or related geospatial software.
  • Proficiency in PDF software such as Bluebeam or Adobe Acrobat.
  • Ability to learn and become proficient in new software and technologies.
  • Ability to maintain attention to detail and a high level of accuracy.
  • Ability to work effectively in a team environment.
  • Strong written and oral communication skills.
  • Ability to multitask, prioritize, and take direction.
  • Strong analytical and problem-solving skills.
  • Ability to self-motivate and work productively without supervision.
  • Ability to kneel, climb, and lift up to 50 pounds.
  • Valid California driver's license and an insurable driving record.
Responsibilities
  • Assist with project management.
  • Manage the workload of other engineering staff.
  • Meet with clients regarding work, team performance, and current and future work.
  • Prepare project concepts through final design plans, specifications, and estimates bid packages.
  • Solve design problems using engineering calculations and 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 support reports and technical writing related to engineering projects, scopes of work, proposals, grants, and other initiatives.
  • Prepare project drawings and designs in AutoCAD Civil 3D.
  • Use AutoCAD Civil 3D 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 the firm's quality objectives.
  • Interact with public and private clients and stakeholders.
  • Interact with multidisciplinary and multi-office teams.
  • Apply leadership and teamwork skills to plan, execute, and manage scopes, schedules, and budgets.
  • Design complete projects, systems, components, or processes.
  • Prepare complete plans, specifications, and other project documents.
  • Design and conduct investigations.
  • Analyze and interpret test data.
  • Assign tasks to and direct technical and non-technical staff.
  • Assist with proposals for professional services or engineering-project funding.
Desired Qualifications
  • An MS, PhD, or other advanced degree in a related field.
  • Envision Sustainability Professional certification.
  • Membership in a professional practice organization such as ASCE, ACEC, or APWA.
  • Involvement in organizing or leading outreach and service activities with community service organizations.

Apex Companies provides environmental consulting and engineering services to public agencies and private clients across all 50 states. Its offerings include water resources management, environmental remediation, health and safety, compliance assurance, ESG advisory, and infrastructure engineering, delivering work from site assessments to managing complex projects. A key differentiator is the breadth of services across environmental, health and safety, and ESG, plus its ARTEMIS data-management platform that organizes environmental information for risk mitigation and lending. The company aims to help clients manage environmental risk, achieve regulatory compliance, and efficiently complete projects while expanding its national footprint.

Company Size

1,001-5,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Rockville, Maryland

Founded

1988

Get referred to Apex Companies

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Apex earned Zweig’s 2026 Hot Firm No. 28 ranking, signaling strong growth momentum.
  • Tully and CWE expanded Apex’s stormwater, civil engineering, and California footprint in 2026.
  • March 2026 and February 2026 acquisitions broadened Apex’s municipal and private-market project pipeline.

What critics are saying

  • Private equity ownership pressures Apex to chase integrations and leverage before 2027.
  • Apex’s acquisition spree risks cultural friction and margin dilution across California, Florida, and Intermountain West.
  • A single failed integration or buyer slowdown could break Apex’s roll-up story and stall growth.

What makes Apex Companies unique

  • Apex combines water, environmental, and infrastructure services under one national platform.
  • Morgan Stanley Capital Partners backs Apex, enabling acquisitions like Tully and CWE in 2026.
  • Apex’s ARTEMIS data tools and stormwater lifecycle expertise deepen client lock-in.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Company Match

Paid Vacation

Paid Sick Leave

Relocation Assistance

Growth & Insights and Company News

Headcount

6 month growth

17%

1 year growth

17%

2 year growth

17%
Apex Companies
Mar 18th, 2026
Apex Companies Acquires CWE

Apex Companies announced the acquisition of CWE, an award-winning civil infrastructure, water resources, and environmental engineering services firm with multiple offices in California.

Associated Press
Feb 17th, 2026
Apex Companies Acquires Tully, Inc.

Adds to Core Stormwater Strength and Enhances Ability to Deliver the Full Stormwater Lifecycle in Northern California

EIN News
Jan 5th, 2026
Raincatcher Advises AquaWorks DBO on Its Acquisition by Apex Companies

Raincatcher, a national mergers and acquisitions advisory firm serving small to mid-size businesses, served as the exclusive sell-side advisor to AquaWorks DBO,

EIN News
Nov 3rd, 2025
Apex Companies Acquires Forsgren Associates, Inc.

Bolsters Engineering Depth and Extends Operational Presence in Intermountain West

EIN News
Nov 26th, 2024
Apex Acquires Weiler Engineering in Florida

Apex Companies, LLC has acquired Weiler Engineering Corporation, a Florida-based engineering firm. This acquisition enhances Apex's engineering capabilities and strengthens its presence in Florida. Weiler Engineering, with over 45 professionals, brings expertise in civil, structural, and utilities engineering. This move follows Apex's recent acquisitions of Johnson Engineering and Water Science Associates, further expanding its services in the municipal and private markets.