Full-Time

Senior Project Engineer

Updated on 8/18/2026

Apex Companies

Apex Companies

1,001-5,000 employees

National environmental consulting and engineering firm

No salary listed

Boise, ID, USA

In Person

Bachelor's

Category
Architecture & Civil Engineering (1)
Required Skills
Microsoft Office
AutoCAD
Quality Assurance (QA)

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Requirements
  • A Bachelor's degree in Civil Engineering or a related field is required.
  • A Professional Engineer license in Idaho is required, or the ability to obtain licensure within one year of hire.
  • At least 5 years of consulting engineering experience in civil engineering design and project delivery is required.
  • Experience preparing engineering plans and specifications for civil infrastructure and site development projects is required.
  • Strong understanding of grading design, utility layout, stormwater management, drainage systems, and applicable engineering standards is required.
  • Experience coordinating multidisciplinary engineering projects through design and construction is required.
  • Working knowledge of local agency standards, permitting processes, and applicable design codes is required.
  • Proficiency with AutoCAD Civil 3D, Microsoft Office, and engineering design software is required.
  • Experience preparing engineering calculations, technical reports, and construction documents is required.
  • Proven ability to manage multiple projects simultaneously while meeting schedules and budgets is required.
Responsibilities
  • Serve as the lead civil engineer for site development and civil infrastructure projects from planning through final design and construction support.
  • Prepare, review, and oversee engineering calculations, technical reports, construction plans, specifications, cost estimates, and supporting documentation.
  • Design and coordinate grading, drainage, stormwater management, utility systems, roadway improvements, and site development infrastructure in accordance with applicable local, state, and federal design standards.
  • Perform hydrologic and hydraulic analyses to support stormwater management, detention systems, conveyance facilities, and erosion control design.
  • Develop construction documents using AutoCAD Civil 3D and associated design software.
  • Coordinate project deliverables with survey, environmental, geotechnical, structural, transportation, and water resources teams.
  • Manage project scope, schedule, budget, and technical quality while ensuring successful project delivery and client satisfaction.
  • Conduct quality assurance and quality control reviews of engineering plans, calculations, and technical documents.
  • Support permitting efforts through coordination with local municipalities, regulatory agencies, and utility providers.
  • Respond to Requests for Information, review submittals, and provide engineering support during construction.
  • Mentor and provide technical guidance to junior engineers and design staff.
  • Participate in project meetings and communicate with clients, contractors, and internal project teams.
  • Support proposal preparation and technical interviews as needed.

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 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.

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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

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.