About Us

At Onterris, we build careers grounded in purpose, responsibility and real-world impact.

“For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.

When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact.

Together, we will advance our way of life and protect the integrity of our environment every step of the way.

A Day in the Life

As our Field Operations Manager, you'll oversee a team of 20+ operators and technicians while driving safe, compliant, and efficient water treatment operations across multiple facilities and field locations. This role will require regular travel between Santa Clarita, CA and Corona, CA. The compensation range for this role is $100,000 to $140,000, commensurate with experience, skills, and geographic location 

To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities:

• Lead, mentor, and manage a team across multiple facilities of 20+ water treatment operators, maintenance technicians, and field personnel, fostering a culture of safety, accountability, and operational excellence.
• Oversee the daily operation, maintenance, and performance of wastewater treatment facilities, distribution systems, and associated field equipment.
• Provide hands-on leadership and technical expertise in troubleshooting water treatment processes and equipment; including pumps, motors, blowers, filtration systems, chemical feed systems, instrumentation, controls, and SCADA systems.
• Direct preventive, predictive, and corrective maintenance programs to maximize equipment reliability, reduce downtime, and ensure uninterrupted treatment operations.
• Monitor water quality, treatment performance, process trends, and operational data to ensure compliance with all regulatory, permit, and client requirements.
• Coordinate field activities, staffing, scheduling, and resource allocation to ensure safe and efficient execution of operational and maintenance work aligned with approved client budgets.
• Lead operational response efforts for equipment failures, process upsets, emergency situations, and system outages.  Ensuring timely resolution and minimal operational impact.
• Develop and implement standard operating procedures, maintenance practices, and continuous improvement initiatives to optimize system performance and operational efficiency.
• Work directly with vendors, contractors, and equipment manufacturers to coordinate equipment repairs, upgrades, installations, start-ups, and specialized technical support.
• Conduct field inspections and operational assessments to identify performance issues, equipment deficiencies, safety concerns, and opportunities for improvement.
• Ensure team members are properly trained and qualified in treatment operations, maintenance procedures, troubleshooting techniques, safety requirements, and regulatory compliance standards.
• Promote and enforce all company, client, and regulatory safety requirements; conducting safety meetings, audits, investigations, and corrective actions as needed.
• Collaborate with clients, regulatory agencies, and internal stakeholders regarding treatment system performance, operational objectives, compliance matters, and service delivery.
• Work alongside Project Managers to align with operation and maintenance budgets, monitor expenditures, and identify opportunities to improve cost efficiency while maintaining a high level of service and reliability.
• Maintain accurate operational, maintenance, and compliance records, ensuring timely reporting and documentation of treatment performance and equipment activities.
• Provide regular updates to senior leadership regarding operational performance, staffing, equipment reliability, safety metrics, and key operational risks.
• Prepare facilities and operational teams for regulatory inspections, audits, and client reviews.
• Perform other duties as assigned

Your Expertise and Skills

 These requirements reflect the knowledge, skills and abilities that help you do your best work here

• 10+ years of treatment operations experience in the environmental, oil & gas, landfill or power industries preferred
• Experience and/or familiarity with wastewater treatment equipment and/or HVAC systems
• Proven experience with OSHA safety standards, mechanical and electrical systems development, engineering, and project management regulations, practices, and codes.
• Proficient with spreadsheets and databases, Microsoft Office software, etc.
• Excellent time management, organizational, and technical communication skills. 
• Demonstrated experience taking responsibility for high level tasks and driving all sub tasks to rapid conclusion with autonomy.
• Strong problem solving and analytical skills.
• Ability to interface with cross-functional teams and all levels of personnel.
• Ability to manage multiple assignments and adapt to changing priorities.
• Must have a valid driver's license and clean MVR
• Must have a reliable form of transportation to travel to job sites

Preferred Qualifications

• Bachelor’s Degree in an engineering or construction discipline

Work Environment and Physical Requirements

The physical and environmental requirements below reflect what’s typically needed to perform the essential functions of this role safely and effectively. We may provide reasonable accommodations for qualified individuals with disabilities, consistent with applicable law, to support performance of the essential functions. 

• Sitting, standing, and walking 
• Lifting 50 pounds several times a day 
• Overhead lifting of over 20 pounds 
• Often works outdoors and may be exposed to hot and cold environments and extreme weather conditions, including sunlit, rainy and windy conditions

Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com.

We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.