Full-Time

Senior Project Engineer Water

Wastewater

Posted on 8/15/2025

Apex Companies

Apex Companies

1,001-5,000 employees

National environmental consulting and engineering firm

No salary listed

Tulsa, OK, USA

In Person

Remote work would be considered for the right candidate.

Category
Architecture & Civil Engineering (1)
Requirements
  • Licensed Professional Engineer with project management skills and 8 to 10 years of engineering experience.
  • A valid driver's license, good driving history and reliable transportation are required.
  • Familiarity with water treatment for surface and groundwater sources, including precipitation/settling, chlorination, filtration, ion exchange and membrane treatment, and proper design of support operations associated with system storage and distribution systems.
  • Familiarity with wastewater collection and treatment systems including solids separation, extended aeration, MLE, SBR, MBBR, and MBR, as well as storage, transmission, and disinfection systems a must.
  • Experience with interpreting and applying regulatory requirements, project coordination, and client interaction; construction project management, estimating and scope writing.
  • Proficient with MS Office suite and Adobe.
Responsibilities
  • Provide engineering technical support for team projects in water/wastewater infrastructure.
  • Conduct engineering design tasks, encompassing calculations, permitting, and inspections, for water and wastewater projects.
  • Analyze and implement state and federal regulations governing water and wastewater systems.
  • Supervise the preparation of permit applications, oversee project operations, and generate comprehensive technical reports.
  • Conduct field visits to project sites, evaluating current and future construction limitations.
  • Collaborate in identifying and addressing safety concerns related to project tasks.
  • Engage in Site Civil Engineering, including site assessment, erosion control, SWPPP (Stormwater Pollution Prevention Plan), grading, and materials design.
  • Develop specifications and formulate plans for site civil work.
Desired Qualifications
  • Experience with effluent disposal and soil assessment is a plus.

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

Simplify Jobs

Simplify's Take

What believers are saying

  • Acquired CWE, Tully, Forsgren, Johnson, Weiler expanding nationwide.
  • Morgan Stanley's 2023 investment fuels aggressive growth and margins.
  • Serves DOI, FEMA with $100M-$500M revenue across 50 states.

What critics are saying

  • PE pressure fragments service from 10+ acquisitions in 12-24 months.
  • AECOM, Jacobs commoditize stormwater post-2025 budget peaks.
  • Federal cuts hit government contracts in 2026-2027.

What makes Apex Companies unique

  • Proprietary ARTEMIS® platform manages environmental data for risk mitigation.
  • Manages over 600 stormwater facilities with inspections and repairs.
  • Ranks #13 in ENR All-Environmental firms for technical expertise.

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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

Company News

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.

The 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 Presswire
Nov 3rd, 2025
Apex Companies Acquires Forsgren Associates, Inc.

Bolsters Engineering Depth and Extends Operational Presence in Intermountain West

EIN Presswire
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.

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