Instrumentation Technician (E&I Technician)

System One; Quincy (MA); On-site; USD 34,000 - 72,000; Full time

Job summary

System One, Inc. is seeking an Instrumentation Maintenance Technician (Electrical & Instrumentation) in Quincy, MA. This hands-on role focuses on preventive maintenance, calibration, troubleshooting, and repairs of plant instrumentation to support 24/7 operations in a busy industrial facility.

Expect field work, strong diagnostics, and collaborative problem solving. You will work with control valves, transmitters, RTDs, thermocouples, flow meters, and switches, following piping and

Qualifications

• 3–5+ years doing hands-on instrumentation maintenance in an industrial or manufacturing setting.
• Experience with control valves, valve positioners, and actuators (air and electric).
• Ability to read piping and instrumentation diagrams and wiring diagrams.
• Experience maintaining common plant instruments (RTDs, thermocouples, flow meters, differential pressure devices, switches, transmitters).

Responsibilities

• Perform preventive maintenance and scheduled checks on plant instrumentation.
• Troubleshoot bad readings/signals, drifting instruments, sticking valves, air supply issues, and failed components.
• Calibrate and verify instruments after repairs or replacements.
• Trace lines and verify conditions before work; follow lockout/tagout and safe work practices.
• Document work (calibration records, instrument paperwork) and close out work orders in CMMS.

Skills

Instrumentation maintenance

Troubleshooting

Calibration

Lockout/Tagout

P&ID reading

Tools

SCADA

SAP

Allen-Bradley PLC

Honeywell Control System

Job description

Instrumentation Maintenance Technician (Electrical & Instrumentation)

Location: Quincy, Massachusetts (02169). Schedule: Monday–Friday 6:00 AM–2:30 PM. Type: Direct Hire (onsite daily). Pay: $25–$52 per hour (depending on experience). Industry: A bio-based chemical manufacturer.

The job . If you’re the person who gets called when a control valve won’t move, a transmitter is reading wrong, or a flow signal drops out, this is your lane. We’re looking for a hands‑on Instrumentation Maintenance Technician to keep plant instruments running—doing preventive maintenance, calibration, troubleshooting, and repairs in a busy industrial facility. This is not just “paperwork” or “engineering only.” It’s a working maintenance role: tools in hand, troubleshooting in the field, and supporting reliable 24/7 operations.

What you’ll work on - You’ll inspect, calibrate, repair, and replace common plant instrumentation such as:

• Valves / Final Control
• Control valves (the valve that actually changes the process—controls flow, pressure, level, and temperature)
• Valve positioners (make sure the valve goes exactly where it’s told; often includes diagnostics)
• Pneumatic actuators (air-powered valve actuators)
• Electric actuators (motor-driven valve actuators)
• Temperature / Flow / Pressure / Level
• Resistance Temperature Detectors (RTDs) (stable/accurate temperature sensors)
• Thermocouples (rugged temperature sensors for hotter/wider ranges)
• Flow meters (liquid/gas/steam flow measurement)
• Differential pressure instruments (used for flow measurement, filter plugging, and sometimes tank level)
• Switches (pressure switches, level switches, flow switches, temperature switches—on/off devices for alarms and safety interlocks)
• Transmitters (pressure/temperature/level/flow transmitters sending signals back to the control system)

What you’ll do day-to-day-responsibilities

• Perform preventive maintenance and scheduled checks on plant instrumentation
• Troubleshoot bad readings/signals, drifting instruments, sticking valves, air supply issues, and failed components
• Calibrate and verify instruments after repairs or replacements
• Trace lines and verify conditions before work; follow lockout/tagout and safe work practices
• Read and work from piping and instrumentation diagrams, wiring diagrams, and manufacturer manuals
• Work with vendors to source replacement parts and instruments
• Document work (calibration records, instrument paperwork) and close out work orders in a computerized maintenance management system

What we’re looking for

• 3–5+ years doing hands‑on instrumentation maintenance in an industrial or manufacturing setting
• Real experience with control valves, valve positioners, and actuators (air and electric)
• Experience maintaining common plant instruments (RTDs, thermocouples, flow meters, differential pressure devices, switches, transmitters)
• Ability to read piping and instrumentation diagrams and wiring diagrams

Nice to have (not required to apply)

• Troubleshooting exposure to Allen Bradley (Rockwell Automation) programmable logic controllers and/or Honeywell control systems
• Familiarity with Supervisory Control and Data Acquisition (SCADA) / distributed control system environments
• Experience using SAP or similar systems, plus solid documentation habits
• Work environment / physical expectations
• Industrial plant environment with required personal protective equipment, possible confined spaces, and ladder/stair climbing (up to 120 feet). Work involves walking/standing, bending/kneeling, and lifting up to 50 lbs.

Key skills

Instrumentation Maintenance Technician, Electrical and Instrumentation Technician, Instrument and Controls Technician, Industrial Maintenance, Manufacturing Maintenance, Preventive Maintenance, Calibration, Troubleshooting, Lockout/Tagout, Piping and Instrumentation Diagram, Wiring Diagrams, Control Valve, Valve Positioner, Pneumatic Actuator, Electric Actuator, Resistance Temperature Detector, Thermocouple, Flow Meter, Differential Pressure, Pressure Transmitter, Temperature Transmitter, Level Transmitter, Flow Transmitter, Pressure Switch, Level Switch, Flow Switch, Temperature Switch, Computerized Maintenance Management System, Allen?Bradley (Rockwell Automation) Programmable Logic Controller, Honeywell Control System, Distributed Control System, Supervisory Control and Data Acquisition, SAP

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.