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Senior Chemical​/Environmental Engineer or Environmental Scientist

Job in Costa Mesa, Orange County, California, 92626, USA
Listing for: Haley & Aldrich
Full Time position
Listed on 2026-09-06
Job specializations:
  • Engineering
    Environmental Compliance & Protection, Environmental Engineer
Salary/Wage Range or Industry Benchmark: 105000 - 140000 USD Yearly USD 105000.00 140000.00 YEAR
Job Description & How to Apply Below
Position: Senior Chemical/Environmental Engineer or Environmental Scientist 2

Senior Chemical/Environmental Engineer or Environmental Scientist 2 – Costa Mesa, CA, United States (req
2144)

Find your path and enjoy the journey at Haley & Aldrich. With us, you’ll tackle clients' most meaningful challenges in the built and natural environments and, in turn, build stronger communities. You'll work with teams of passionate colleagues, driven by a commitment to technical excellence and continuous learning.

As a company, we aim to build a world where communities go beyond resilience, embracing change as an opportunity to enhance safety, well-being, and quality of life. Join us to accelerate this vision and your professional development.

We are looking to add new talent to our growing team! We are currently seeking a Senior Chemical/Environmental Engineer or Environmental Scientist to work in a technical role with highly skilled professionals on diverse project teams in a dynamic environment. This is an excellent opportunity to join a growing group and company and get involved in a variety of projects for a diverse range of clients.

This is a full-time position located in our Costa Mesa, CA office.

DUTIES/RESPONSIBILITIES

In this position, you will:

  • Support current EHS practitioners and contribute to the continued growth of our EHS practice.
  • Work with energy, industrial, and other clients across the nation, providing technical leadership, coordinating with clients and regulators, managing project work, and mentoring staff.
  • Coach, mentor, and support staff to facilitate knowledge transfer and ensure high-quality execution of project tasks, technical reports, and deliverables.
  • Understand client needs and execute projects to achieve client goals.
  • Understand Federal and state environmental regulations and to evaluate and interpret requirements as they apply to our clients.
  • Lead environmental compliance projects, with special emphasis on air dispersion modeling, permitting, and compliance.
  • Coordinate with clients and regulators to support projects throughout the U.S.
  • Be capable of managing financial and technical aspects of projects.
  • Be effective in assigning and managing work.
  • Execute projects to meet technical, quality, budgetary and scheduling requirements.
  • Prepare project deliverables including reports, plans, and specifications.
  • Demonstrate very strong verbal communications and written skills including client deliverables and regulatory submittals.
  • Demonstrate strong coaching and mentoring skills.
  • Perform all work in accordance with company and client Health & Safety protocols.
  • Comply with Guiding Principles and Code of Behavior articulated in our Company Charter.
  • Some travel may be required.
SKILLS/EXPERIENCE

Minimum Skills and Requirements:

  • Minimum B.S./B.A. degree in Environmental Engineering, Environmental Science, or related discipline. Master's degree preferred.
  • 15+ years of related work experience.
  • Experience in performing air quality modeling using standard air quality models (e.g., AERMOD, AERSCREEN) is desirable.
  • Experience preparing permit applications and air emission calculations.
  • Technical report writing skills.
  • Communication skills and ability to collaborate with others in a consulting environment.
  • Strong attention to detail with excellent analytical, judgment, and problem-solving capabilities.
  • Understanding of common industrial activities and the relationship with various environmental media/regulations (e.g., air, wastewater, regulated waste, EPCRA, tanks).
  • Working knowledge of MS Office including Word, Excel, and other standard software. GIS or CAD experience a plus.

The salary range for this position in Costa Mesa, CA is $105,000-$140,000
annually
. Actual compensation will be based upon a variety of factors such as education, related work experience, certificates, skills, and current market conditions. Haley & Aldrich reviews salary ranges each quarter to assess competitiveness with the market.

About Haley & Aldrich

Haley & Aldrich is committed to delivering the value our clients need from their capital, operations, and environmental projects. Our team of 1,000+ engineers and scientists across the United States draw inspiration from one mission: to work closely with clients as they…

Position Requirements
10+ Years work experience
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