Careers

Sonoma Technology is seeking an Air Quality and Emissions Modeler to join our Atmospheric and Emissions Modeling Group in Petaluma, California. The successful candidate will assist with emissions and air quality modeling assessments and environmental data analysis projects, and support the continued growth of our modeling, emissions, and transportation business areas.           

Selected by the North Bay Business Journal as one of the Best Places to Work for the 18th consecutive year, Sonoma Technology is a private consulting firm that provides innovative, science- and technology-based solutions for our clients' environmental challenges worldwide. Our integrated teams of air quality and environmental scientists, meteorologists, software engineers, and specialists tailor products and services to best serve our clients. We empower our clients to make informed, timely decisions about environmental issues.           

We believe that our most valuable resource is our team. We offer a casual but professional work environment, a competitive benefits package to full-time employees, and an opportunity to address intellectually challenging environmental issues. We organize a variety of inclusive activities throughout the year and enjoy a balanced and supportive culture. For more information about our culture, visit www.sonomatech.com/charter.           

Sonoma Technology is an affirmative action and equal opportunity employer.           

Key Responsibilities

• Conduct technical analyses using advanced emissions and air quality models to address complex environmental problems and meet the research, regulatory, and litigation support needs of our clients.
• Develop, process, and assess emissions inventories to support regional-scale and near-field air quality assessments.
• Visualize, analyze, and interpret model data and other environmental datasets.
• Apply statistical methods to compare model results with observation data.
• Prepare technical reports and communicate results to clients and other scientific researchers.
• Work with interdisciplinary teams in a collaborative applied research environment.

Required Qualifications and Skills

• A BS, MS, or PhD degree in the physical sciences, environmental sciences, or engineering.
• Experience in emissions modeling (e.g., using SMOKE, MOVES, or EMFAC).
• Experience in air quality modeling (e.g., using CMAQ, HYSPLIT, or AERMOD).
• Strong data analysis skills and experience working in a Linux computing environment.
• Excellent communication, organization, time management, and problem-solving skills.
• Ability and willingness to learn through on-the-job internal and external training.
• A strong interest in air quality and environmental science.
• Aptitude for working independently and within a team.

Desired Qualifications

• Knowledge of atmospheric processes.
• Experience with a data science and analysis platform (e.g., Python, R, Matlab, IDL).
• Experience with Linux shell scripting.
• Experience with the U.S. EPA National Emission Inventory, emissions inventory development, and using SMOKE and related tools to develop emissions inputs for air quality models.
• Experience or interest in mobile source activity analysis (e.g., travel activity modeling), emissions modeling (e.g., using MOVES, EMFAC, NONROAD, OFFROAD), or transportation-related air quality analysis.

Salary Range: $85,000 to $130,000           

Submitting a Resume           
No phone calls, please. Simply send a letter of interest, a resume, and the job reference code by email, mail, or fax to:           
Cathy Anthony           
Sonoma Technology, Inc.           
1450 N. McDowell Blvd., Suite 200           
Petaluma, California 94954           
canthony@sonomatech.com           
Fax: 707-665-9800           
www.sonomatech.com           
 

Reference Code: AQEM

Sonoma Technology is seeking an Air Quality Data Scientist to join our Data Science Department. The successful candidate will work on projects involving ambient and/or emissions data to better understand local and regional air pollution levels and sources. We are looking for candidates who have a strong scientific background and are excited to perform hands-on work covering a wide range of air quality data.

Selected by the North Bay Business Journal as one of the Best Places to Work for the 18th consecutive year, Sonoma Technology is a private consulting firm that provides innovative, science- and technology-based solutions for our clients' environmental challenges worldwide. Our integrated teams of air quality and environmental scientists, meteorologists, software engineers, and specialists tailor products and services to best serve our clients. We empower our clients to make informed, timely decisions about environmental issues.           

We believe that our most valuable resource is our team. We offer a casual but professional work environment, a competitive benefits package to full-time employees, and an opportunity to address intellectually challenging environmental issues. We organize a variety of inclusive activities throughout the year and enjoy a balanced and supportive culture. For more information about our culture, visit www.sonomatech.com/charter.           

Sonoma Technology is an affirmative action and equal opportunity employer.           

Key Responsibilities

• Conduct technical analyses using ambient air quality and meteorological data, such as quality control, data validation, and data analysis of high-time resolution data.
• Visualize, analyze, and interpret ambient air quality and/or model data.
• Apply statistical methods to assess ambient air quality and/or model data.
• Investigate spatial and temporal patterns of ambient air quality, model, and/or emissions data to support international, national, regional, and local-level air quality assessments.
• Prepare technical reports and communicate results to clients and other scientific researchers.
• Work with interdisciplinary teams in a collaborative, applied research environment.

Required Qualifications and Skills

• A BS or MS degree in the physical sciences, environmental sciences, or engineering, with a focus on air quality or atmospheric science.
• A strong interest in air quality and environmental science.
• Ability to create scientifically sound and clear written products such as journal manuscripts.
• Excellent communication, organization, time management, and problem-solving skills.
• Ability and willingness to learn through on-the-job internal and external training.

Desired Qualifications

• Knowledge of atmospheric processes.
• Proficiency in a data science and analysis platform (e.g., Python, R, IDL).
• Experience or familiarity with GIS technology (ArcMap).
• Experience with spatial statistics.

Salary Range:$60,000 - $90,000

Submitting a Resume           
No phone calls, please. Simply send a letter of interest, a resume, and the job reference code by email, mail, or fax to:           
Cathy Anthony           
Sonoma Technology, Inc.           
1450 N. McDowell Blvd., Suite 200           
Petaluma, California 94954           
canthony@sonomatech.com           
Fax: 707-665-9800           
www.sonomatech.com           
 

Reference Code: AQDS

Selected by the North Bay Business Journal as one of the Best Places to Work for the 18th consecutive year, Sonoma Technology is a private consulting firm that provides innovative, science- and technology-based solutions for our clients' environmental challenges worldwide. Our integrated teams of air quality and environmental scientists, meteorologists, software engineers, and specialists tailor products and services to best serve our clients. We empower our clients to make informed, timely decisions about environmental issues.           

We believe that our most valuable resource is our team. We offer a casual but professional work environment, a competitive benefits package to full-time employees, and an opportunity to address intellectually challenging environmental issues. We organize a variety of inclusive activities throughout the year and enjoy a balanced and supportive culture. For more information about our culture, visit www.sonomatech.com/charter.           

Sonoma Technology is an affirmative action and equal opportunity employer.           

The Project Accountant is expected to demonstrate strong expertise in managing project finances and delivering high-quality, accurate financial reports and analyses. This role involves a keen understanding of accounting operations and a commitment to financial precision and integrity. It requires analytical skills, attention to detail, and the ability to make sound financial decisions in a fast-paced environment. Success in this position demands solid business insight, the ability to manage and coordinate with multiple stakeholders, and a proactive approach to supporting sustained financial health and growth across projects. This is a collaborative role that values ethical standards, accountability, and clear, professional communication. 
 

Key Responsibilities

• Review project contracts to understand financial obligations and ensuring compliance with contractual terms
• Maintain accurate and up-to-date project data in accounting systems
• Support proposal and cost-estimating activities
• Support project managers and accounting team with project management schedules
• Work with project managers to provide timely project performance data
• Proactively escalate issues that require immediate attention
• Update and maintain the project database and generate standard and special reports for project managers and senior management
• Perform a variety of tasks in support of contracts, clients, project managers, and others
• Perform other duties as needed

Required Qualifications and Skills

• Bachelors Degree in Accounting or Finance is preferred, but not a requirement
• 2+ years experience in a prior Project Accountant or Cost Accountant role
• Prior experience with analysis of project costs and budgets
• Understanding of Revenue Recognition Rules
• Team player, good work ethic, and self-initiation
• Excellent organization, time management, interpersonal, and customer service skills
• Proficiency with Microsoft Office suite (in particular, strong Excel and Word skills)
• Strong task ownership, follow-through, and attention to detail
• Ability to prioritize tasks effectively and work on several projects simultaneously
• Strong initiative and ability to work both independently and as part of a team
• Ability to communicate effectively verbally and in writing
• Desire to learn new skills and grow professionally
• Project accounting software experience (e.g., Deltek VantagePoint, Deltek Vision, Jamis, Sage) is a plus

Salary Range: $65,000 to $80,000

Submitting a Resume           
No phone calls, please. Simply send a letter of interest, a resume, and the job reference code by email, mail, or fax to:           
Cathy Anthony           
Sonoma Technology, Inc.           
1450 N. McDowell Blvd., Suite 200           
Petaluma, California 94954           
canthony@sonomatech.com           
Fax: 707-665-9800           
www.sonomatech.com           
 

Reference Code: PA