Field Service Technician

Kelly Engineering is seeking a Field Service Technician to join one of our leading global clients in environmental services, specializing in water, waste, and energy management solutions at their St. Peters, MO site.

Please apply to learn more!

Ideal Candidate:

• 2+ years of service, maintenance, or operations experience in an industrial environment
• Valid Drivers License
• Able to work off hours and travel to other job sites
• Experience in filtration, ultrafiltration (UF), reverse osmosis (RO), ion exchange (IX), de-oxygenation, electrodeionization (EDI), clarification systems preferred

Role Summary

• The Field Service Center Technician serves a dual-function role within the Long-Term Service Agreement (LTSA) delivery model. Primarily based at a designated Service Center in St. Peters, MO , this technician supports equipment uptime, peak demand response, and technician training activities within various customer Service Centers. The role also includes deploying to customer sites as a Field Service Representative (FSR) when Service Center workflow permits.
• This position is essential to maintaining high availability of water treatment assets and building operational capability across the team.

Key Responsibilities

Service Center Operations Support

• Support Service Center uptime objectives by performing scheduled and corrective maintenance on equipment staged for deployment or in service refurbishment.
• Respond to peak demand periods by assisting with equipment preparation, testing, and mobilization to customer sites.
• Conduct hands-on training sessions for FSR and Operator-level personnel on equipment operation, maintenance procedures, and safety protocols.
• Maintain accurate inventory of spare parts, consumables, and chemical stocks; initiate replenishment orders as needed.
• Document Service Center work activities, equipment condition reports, and training records in accordance with site SOPs.
• Support general Service Center operations during seasonal and non-seasonal peak demand periods.

Field Service (As Assigned)

• Operate, monitor, and optimize water treatment systems at customer facilities, including media filtration, ultrafiltration (UF), reverse osmosis (RO), ion exchange (IX), de-oxygenation, electrodeionization (EDI), clarification, bioreactor, filter press, and chemical injection systems.
• Troubleshoot and perform preventative and corrective maintenance on industrial equipment, including motors, PLCs, VFDs, valves, air compressors, ejectors, process pumps, blowers, and instrumentation.
• Conduct analytical testing: turbidity, hardness, chlorine, pH, CO₂, O₂, SDI, TOC, and other site-specific parameters.
• Communicate findings and system status to customer management and operations teams; provide detailed technical summaries of work performed.
• Maintain site paperwork and ensure all field service records are accurate and current.
• Respond to emergency service requests; participate in on-call rotation as required.

Qualifications

Required:

• High School Diploma / GED or equivalent with 2+ years of service, maintenance, or operations experience in an industrial environment; OR Associate’s or Bachelor’s degree in Science, Engineering (STEM), or a technical certificate in Instrumentation, Controls, or related discipline
• Valid driver’s license and reliable transportation.
• Ability to obtain and maintain access credentials for customer sites.
• Ability and willingness to perform physical duties including lifting, climbing, working at elevated heights, and confined space entry.
• Ability and willingness to travel extensively.

Preferred:

• Experience with PLC control systems, PLC programming, and controls troubleshooting.
• Prior experience in water treatment operations or industrial services.
• Experience mentoring or training technician-level personnel.