Field Service Engineer
Orion Talent
San Jose, CA · Posted October 23, 2026
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Pay compared with the market
This listing does not state pay. Across 159 open field service engineer listings that state pay, the middle half runs $77,500 to $101,000 and the median is $88,500.
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About the job
The Field Service Engineer is responsible for installing, commissioning, maintaining, troubleshooting, and repairing high-purity water purification systems at laboratory, biotechnology, healthcare, and industrial customer facilities. This position combines hands-on mechanical and electrical troubleshooting, water quality verification, preventive maintenance, emergency repairs, and professional customer service to ensure reliable equipment operation and consistent water quality. Responsibilities include installing and servicing reverse osmosis (RO), deionization (DI), electrodeionization (EDI), ultraviolet (UV), filtration, softening, and laboratory water purification systems. The Field Service Engineer will troubleshoot pumps, valves, membranes, resins, motors, sensors, and controls; perform water quality testing; and diagnose flow, pressure, electrical, and system performance issues. Additional responsibilities include interpreting technical drawings, coordinating customer service activities, maintaining calibrated testing equipment, documenting repairs and test results, and ensuring compliance with established safety procedures. Must-Have Skills, Experience, and Education:
Practical understanding of pumps, fluid systems, motors, controls, and water chemistry
Strong mechanical and electrical troubleshooting aptitude
Ability to install, troubleshoot, maintain, and repair water treatment or related mechanical and electrical equipment
Ability to diagnose flow, pressure, electrical, control, and water quality problems
Ability to identify equipment failures, determine root causes, and recommend corrective actions
Ability to perform preventive maintenance, corrective maintenance, and emergency equipment repairs
Ability to troubleshoot and replace pumps, valves, membranes, resins, instruments, motors, and control components
Ability to use electrical diagnostic equipment and water quality testing instruments
Ability to measure and document water quality parameters, including conductivity, resistivity, pH, and total dissolved solids (TDS)
Ability to read and interpret Piping and Instrumentation Diagrams (P&IDs), electrical wiring diagrams, schematics, and equipment manuals
Working understanding of electrical components, sensors, relays, and equipment controls
Ability to troubleshoot equipment within established training and authorization limits
Ability to complete accurate field service reports documenting test results, repairs, parts usage, labor, and service recommendations
Ability to use mobile service software for work orders, reporting, and service documentation
Strong customer service and communication skills
Ability to explain technical findings, equipment conditions, and repair recommendations to customers
Ability to coordinate customer site access, equipment downtime, and follow-up service activities
Strong troubleshooting, analytical, and problem-solving skills
Strong organizational and time-management skills
Ability to work independently at customer facilities while maintaining professional communication with the service team
Valid driver's license and ability to meet applicable company vehicle requirements
Requirements:
Ability and willingness to travel to customer sites throughout the assigned service territory
Ability to work occasional after-hours, weekend, emergency response, and scheduled on-call assignments as required
Ability to work in mechanical rooms, laboratories, healthcare facilities, and industrial environments
Ability to stand, bend, kneel, and climb ladders
Ability to lift up to 50 pounds with appropriate assistance when needed
Ability to follow Cal/OSHA requirements and established workplace safety procedures
Ability to properly use personal protective equipment (PPE)
Ability to follow chemical handling, electrical safety, and lockout/tagout (LOTO) procedures
Ability to perform only work for which properly trained and authorized
Ability to maintain calibrated testing equipment, service tools, parts inventory, and assigned company service vehicle
Ability to comply with customer facility safety requirements and established service procedures
Ability to maintain dependable attendance, timely service documentation, and professional customer communication
Nice-to Have Skills, Experience, and Education:
3+ years of relevant field service, industrial maintenance, water treatment, or laboratory equipment experience; equivalent training and experience considered
Technical training or associate degree in Mechanical, Electrical, Water Treatment, or a related technical discipline
High-purity water purification system experience
Laboratory water purification equipment experience
Reverse osmosis (RO) system installation, maintenance, and troubleshooting experience
Deionization (DI) system experience
Electrodeionization (EDI) system experience
Ultraviolet (UV) water treatment equipment experience
Water filtration and softening system experience
Experience with ELGA laboratory water purification equipment
Experience with MilliporeSigma laboratory water purification equipment
Experience with comparable laboratory water purification systems
Grundfos pump experience
Fleck water treatment control experience
Experience servicing UV treatment equipment
Experience troubleshooting water purification systems in laboratory, biotechnology, healthcare, or regulated industrial facilities
Familiarity with ASTM laboratory water quality specifications
Familiarity with applicable Association for the Advancement of Medical Instrumentation (AAMI) standards
Water treatment system commissioning experience
Equipment calibration and qualification experience
Programmable Logic Controller (PLC) troubleshooting experience
Variable Frequency Drive (VFD) troubleshooting experience
Automated process control system experience
Experience troubleshooting sensors, relays, and electrical control systems
Experience coordinating specialized Total Organic Carbon (TOC), microbial, or endotoxin testing
Experience performing water quality verification and documenting system performance
Experience conducting root cause analysis and reducing repeat equipment failures