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Apex Companies

National environmental consulting and engineering firm

Environmental Principal

Full-TimeUpdated on 10/23/2026
$150k - $200k/yr
Expert
Los Angeles, CA, USA
RemoteRemote, hybrid, or in-office within the Los Angeles metropolitan market; travel to client locations as needed.
Architecture & Civil EngineeringEnvironmental Engineering

About the job

Requirements
  • 15+ years of environmental consulting or industry experience with progressive responsibility and leadership.
  • 7+ years of demonstrated success in business development with new and existing clients.
  • Established client relationships and an active network within the region or with national clients.
  • Demonstrated success in developing markets, securing key clients, and achieving financial growth targets.
  • Strong technical background in one or more of the core disciplines: Environmental Compliance, Site Investigation/Remediation, Site Development Permitting, EHS, or Due Diligence.
  • Deep understanding of the region’s regulatory and business environment.
  • Communication, negotiation, and presentation skills for engaging with senior-level clients, regulators, and stakeholders.
Responsibilities
  • Drive and achieve strategic growth of environmental services in the designated market in collaboration with Commercial and Service Line Leadership.
  • Proactively identify and pursue new business opportunities, lead sales meetings, and support cross-selling of Apex’s complementary services.
  • Maintain and expand long-term client relationships, acting as a trusted advisor.
  • Provide subject matter expertise, lead quality assurance/quality control efforts, and mentor project teams to promote technical excellence and high performance.
  • Manage project performance with a focus on quality, innovation, and client satisfaction.
  • Travel to client locations as needed for meetings and business development.

About the company

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

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Simplify's Take

What believers are saying

  • Zweig named Apex a 2026 Hot Firm, ranking it No. 28.
  • March 2026 CWE acquisition expands California engineering reach and cross-sells immediately.
  • February 2026 Tully acquisition strengthens stormwater lifecycle services across Northern California projects.

What critics are saying

  • Rapid roll-up integration can dilute service quality and overload project managers by 2027.
  • The 2024 NRC report flagged a Severity III violation at Apex Companies.
  • PE ownership under Morgan Stanley Capital Partners pressures exits; stalled growth breaks the platform thesis.

What makes Apex Companies unique

  • Apex bundles water, environmental, and infrastructure work through one national platform.
  • ARTEMIS gives clients environmental data management and lending support across project lifecycles.
  • March 2026 CWE and Tully deals deepen California civil, water, and stormwater capabilities.

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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

6 month growth

20%

1 year growth

20%

2 year growth

20%
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.