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Senior Engineer, Water/Wastewater

Apex Companies is a fast-growing national engineering and environmental consulting firm seeking a Senior Project Engineer to support its Water, Wastewater, and Water Resources practice. The role is remote (U.S.-based) and will provide technical leadership on treatment plants, pump/booster stations, water distribution systems, and related utility design projects while mentoring junior staff and supporting project management tasks.

Skills

  • Water and wastewater system design
  • Hydraulic and hydrologic analysis
  • Construction administration
  • Technical writing and reporting
  • Project budgeting and schedule tracking
  • Client communication and presentations
  • Staff supervision and mentoring

Responsibilities

  • Provide technical leadership and develop solutions for water, wastewater, and water resources projects (treatment plants, pump/booster stations, distribution systems).
  • Support Project Managers in planning, coordinating, and executing projects while monitoring budgets and schedules.
  • Prepare scopes, fee estimates, and technical approaches for proposals and subconsultant coordination.
  • Perform design review, quality control, calculations, and basis-of-design documentation for complex projects.
  • Lead construction administration tasks including meetings, submittal reviews, RFIs, change orders, pay applications, and closeout.
  • Supervise, train, and mentor junior engineers; provide performance input and daily guidance.
  • Attend and present at client meetings and public hearings; prepare technical memoranda and reports.
  • Identify potential claims or contractual issues and report concerns to the Project Manager.

Education

  • Bachelor of Science in Civil or Environmental Engineering (required) with 7+ years water engineering design experience
  • OR Master of Science in Civil or Environmental Engineering with 5+ years relevant experience
  • Registered Professional Engineer (PE) or ability to obtain licensure by reciprocity / working toward licensure within one year

Benefits

  • Company-subsidized medical and dental insurance
  • Company-paid life, short-term, and long-term disability
  • 401(k) match
  • Tuition assistance and professional development
  • Performance-based bonuses or incentives
  • Cross-training and variety of project types
  • $10,000 sign-on bonus for this position
  • Work with a large national firm (1,700+ employees, 50+ locations)
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$110000 / YEARLY (est.)
min
max
$95000K
$125000K

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TEAM SIZE
SALARY RANGE
$95,000/yr - $125,000/yr
EMPLOYMENT TYPE
Full-time, remote
DATE POSTED
October 15, 2025
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