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Apex Companies

National environmental consulting and engineering firm

Senior Principal Engineer

Full-Time
$150k - $200k/yr+ Annual bonus + Equity awards + $20,000 sign-on bonus
Expert
Bachelor's
Portland, OR, USA+1 moreMore locations: Vancouver, WA, USA
In Person
Architecture & Civil EngineeringTransportation Engineering

About the job

Requirements
  • A Bachelor's degree in Civil Engineering is required.
  • At least 15 years of progressive experience managing infrastructure projects for ODOT and/or local agencies in Oregon, along with similar experience in Washington, is required.
  • An Oregon and Washington Professional Engineer license is required, or the ability to obtain both within six months of hire.
  • Demonstrated experience leading multidisciplinary infrastructure design projects from pursuit through construction while keeping projects within scoped schedules and budgets is required.
  • Strong knowledge of the ODOT Design Manual, AASHTO, MUTCD, and Oregon state and local agency standards is required.
  • Experience with project management, budgeting, scheduling, and client management is required.
  • Proficiency with Microsoft Office and AutoCAD Civil 3D is required.
  • Verbal, written, and presentation skills are required.
  • Business development and client relationship experience are required.
Responsibilities
  • Serve as project manager for a portfolio of multidisciplinary infrastructure projects with cumulative annual project totals exceeding $3 million, ensuring technical excellence, quality, and successful delivery within schedule and budget.
  • Contribute to capturing more than $2 million in annual business development across Oregon and Washington, including client engagements, proposal preparation, interviews, and alignment of marketing efforts with strategic growth initiatives.
  • Lead business development efforts for infrastructure projects across Oregon and with other agencies throughout the northwest where the employee has relationships.
  • Develop and maintain client relationships, identify new project opportunities, and expand existing accounts.
  • Serve as project manager and/or principal-in-charge for complex infrastructure engineering projects from planning through construction.
  • Oversee project scope, schedule, budget, quality, and client satisfaction to ensure successful execution within approved scopes and budgets.
  • Provide technical leadership for roadway, highway, intersection, bridge, multimodal, and corridor improvement projects.
  • Coordinate multidisciplinary teams across roadway, drainage, utilities, structures, traffic, and environmental disciplines.
  • Manage multiple assignments and priorities while collaborating with the principal-in-charge and other senior leadership.
  • Prepare and review technical reports, engineering studies, design documents, and project deliverables.
  • Mentor, coach, and develop junior engineers and project managers, fostering technical growth and leadership within the team.
  • Represent the firm at client meetings, industry events, and professional organizations to strengthen market presence and support continued growth.
  • Promote a collaborative, client-focused culture and ensure projects are delivered safely, on schedule, and within budget.
Desired Qualifications
  • Experience with MicroStation/OpenRoads Designer and 3D roadway modeling.
  • Existing relationships with ODOT, Washington County, City of Portland, Port of Portland, Clackamas County, and other regional agencies across the northwest.
  • Experience managing alternative delivery projects and multidisciplinary consultant teams.

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

Headcount

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.