Senior Field Service Technician

Onterris; Portland (ME); On-site; USD 80,000 - 90,000; Full time

Job summary

Onterris is seeking a Senior Field Service Technician based in Portland, ME to lead complex field engineering tasks, perform O&M on environmental equipment, and coordinate with clients and project teams. The role requires strong troubleshooting abilities and travel up to 75% to project sites.

The ideal candidate has 5+ years of mechanical/electrical troubleshooting, HAZWOPER and NFPA70E training, and a valid Class C license. Proficiency in MS Office and independence are essential.

Qualifications

• 5+ years of mechanical/electrical troubleshooting, environmental collection, monitoring, sampling and basic evaluation.
• Must possess a valid Class C driver’s license with a clean driving record and reliable transportation for travel to project and job sites.
• NFPA70E Training or willingness to complete.
• Ability/willingness to travel up to 75%.
• HAZWOPER certification (40-hour) and annual 8-hour refresher.
• Must lift up to 50 pounds with or without assistance.
• Proficient with Microsoft Office software.
• Able to interface with cross-functional teams and all levels of personnel/management.
• Strong problem solving and analytical skills.
• Solid organization and time/project management skills.
• Effective verbal and written communication skills, legible handwriting.
• Able to work independently and manage multiple responsibilities.

Responsibilities

• Leads and independently performs complex field engineering and technical activities, including equipment inspections, startup and commissioning support, fabrication progress evaluations, vendor audits, and data collection.
• Serves as a technical lead in the field by coordinating with clients, contractors, vendors, and project teams to ensure compliance with project specifications and safety requirements.
• Performs operations and maintenance of environmental treatment equipment including pumps, filters, tanks, and other process units.
• Collects samples using various methods and operates field monitoring equipment (PID/FID, pH, EC, DO, etc.).
• Measures and records treatment data, prepares field reports and data sheets.

Skills

Field troubleshooting

Mechanical and electrical

Driver's license

HAZWOPER training

NFPA70E training

Travel up to 75%

Microsoft Office

Cross-functional collaboration

Independent work

Education

High School Diploma

Associate’s Degree in Environmental Studies

Technical certification

Tools

PLC/SCADA systems

Microsoft Office

Job description

Senior Field Service Technician

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.

This position is based in Portland, ME.

The annual compensation range for this role is $80,000-$90,000 commensurate with experience, skills, and geographic location.

A Day in the Life

Reporting to the Field Services Project Manager, this role will be responsible for a full range of activities including:

• Leads and independently performs complex field engineering and technical activities, including equipment inspections, startup and commissioning support, fabrication progress evaluations, vendor and supplier site audits, construction inspections, field verification measurements, site assessments, troubleshooting, and comprehensive data collection efforts.
• Serves as a technical lead in the field by coordinating with clients, contractors, vendors, and project teams to ensure compliance with project specifications, quality standards, safety requirements, and operational objectives.
• Performs operations and maintenance (O&M) of various types of environmental treatment equipment including pumps, filters, tanks, pressure vessels, and other types of process unit operations.
• Poses a general understanding of system hydraulics, mechanical operation/functionality and instrumentation/electrical control schemes.
• Supports fabrication activities, as well as hands‑on set‑up of bench and pilot testing equipment.
• Executes piping/skid fabrication in the shop and field, troubleshoots and repairs mechanical and electrical system issues or failures.
• Collects samples using a variety of sampling methods and operates field monitoring equipment including but not limited to PID/FID, pH, EC, DO, GEM, turbidity, water level, and LEL meters.
• Measures and records treatment operational data by carefully documenting monitoring and testing results on field forms and prepares field daily reports and data sheets.
• Conducts field monitoring, sampling, testing, and basic evaluations; maintains chain‑of‑custody documentation and regulatory sample handling protocols; and records inspection data in electronic spreadsheets and reports.
• Ensures proper labeling and handling of hazardous material and waste.
• Exercises safe work practices by following all Company safety rules and OSHA regulations, including attendance at all required safety training programs.
• Communicates promptly with Project Managers and various stakeholders to inform of site conditions and activities.
• Interacts with clients acting as a front‑line representative of the company, presents a professional appearance, and wears appropriate PPE on job sites.
• Participates in the company’s continuous improvement programs and provides support to team efforts.
• Keeps up‑to‑date and current on industry trends by completing formal training.
• Performs other duties as assigned.

Your Expertise And Skills

• High School Diploma or equivalent.
• 5+ years of experience performing mechanical/electrical troubleshooting, environmental collection, monitoring, sampling, testing and basic evaluation.
• Must possess a valid Class C driver’s license with a clean driving record and have reliable transportation for travel to project and job sites.
• NFPA70E Training or the willingness to complete.
• Ability/willingness to travel up to 75%.
• Ability to complete and maintain HAZWOPER certification with the 40‑hour HAZWOPER environmental health and safety class, and annual 8‑hour refresher classes.
• Must have the ability to lift 50 pounds such as monitoring equipment and tools, with or without assistance.
• Proficient with Microsoft Office software.
• Be able to deliver and receive electronic documents.
• Ability to interface with cross‑functional teams and all levels of personnel/management.
• Strong problem solving and analytical skills.
• Solid organization and time/project management skills.
• Effective verbal and written communication skills, must have legible handwriting.
• Able to work independently and manage multiple responsibilities (self‑starter, self‑motivated).

Preferred Qualifications

• Familiarity with supervision of construction projects.
• Background in electrical, plumbing or other mechanical trades. Electrical background preferred.
• Competence in HVAC, mechanical and electrical.
• Ability to operate systems via PLC SCADA.
• Associate’s Degree in Environmental Studies from an accredited university or a technical certification.

Working Conditions

Physical Demands

While performing the in‑office responsibilities of the job, the employee may be required to spend long hours sitting and using office equipment and computers, and is regularly required to sit, talk, and hear. The employee frequently is required to use hands and fingers to handle or feel.
While performing the out of office field responsibilities for the job, the employee will be required to travel up to 75% of the time. Typically out of state, Monday to Friday travel. There may be occasional multiple week operations stints which will be compensated with flexible off time during home periods. There may be occasional lifting (overhead, waist level) from floor of supplies and materials weighing no more than 50 pounds. The work may involve some bending, standing or walking.

Work Environment

Moderate exposure to environmental conditions that impact physical comfort such as temperature extremes while performing field work is possible.

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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, learn more.