Field Service Technician II

NES Fircroft; Illinois; On-site; USD 52,000 - 68,000; Full time

Job summary

NES Fircroft is seeking a hands-on Field Service Technician to support on-site industrial water treatment systems in Roxana, IL. The role emphasizes strong technical troubleshooting, safe installation, and dependable service visits to customer sites.

You will perform preventative maintenance, calibrate probes and instruments, and document service reports while building professional relationships with customer staff. Some emergency calls may occur after hours.

Qualifications

• 2–4 years of industrial/field service experience.
• Strong troubleshooting and communication skills.
• Basic instrumentation knowledge.

Responsibilities

• Perform preventive maintenance, troubleshooting, and service at customer sites.
• Test water systems, calibrate probes, and analyze readings (pH, conductivity, etc.).
• Troubleshoot pumps, chemical feed systems, boilers, and cooling towers.
• Calibrate and troubleshoot field instrumentation and probes.
• Handle chemical dosing systems safely and maintain service reports.

Skills

Field service experience

Troubleshooting

Mechanical/electrical basics

MS Office proficiency

Communication skills

Education

High school diploma or GED

Job description

Field Service Technician Location

On‑site, Roxana, IL | 900 S Central Ave, Roxana, IL 62084

Position Summary

Seeking a hands‑on Field Service Technician to support industrial water treatment systems at a customer site. This role requires strong technical troubleshooting skills, the ability to work independently, and a safety-focused mindset.

Key Responsibilities

• Perform preventative maintenance, troubleshooting, and service work at the customer site.
• Test industrial water systems, including pH, conductivity, hardness, and alkalinity.
• Troubleshoot pumps, chemical feed systems, boilers, and cooling towers.
• Calibrate and troubleshoot probes, analyzers, and field instrumentation.
• Handle and monitor chemical dosing systems safely.
• Maintain accurate service reports and records of technical issues and parts used.
• Respond to occasional emergency service calls, including nights, weekends, or holidays.
• Build strong relationships with customer personnel and provide professional on‑site support.

Requirements

• 2–4 years of relevant industrial/field service experience.
• High school diploma or GED required.
• Mechanical, plumbing, electrical, and basic instrumentation troubleshooting skills.
• Experience with industrial water chemistry and water treatment equipment preferred.
• Strong communication, organization, and time-management skills.
• Proficiency with Microsoft Outlook, Word, and Excel.
• Valid driver’s license with an acceptable Motor Vehicle Record.
• Must live within a reasonable commuting distance of Roxana, IL.

With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining andManufacturingsectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market‑leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.