I&C Technician

CORE Group; Brownsville (TX); On-site; USD 65,000 - 85,000; Full time

Job summary

CORE Group Resources is hiring Instrumentation & Controls Technicians for a major technology client’s infrastructure team. You will build, install, operate, and maintain instrumentation and controls for power, HVAC, utility, and fluid systems, supporting production and power generation operations.

From field devices to PLC/SCADA, you’ll install sensors, valves, wiring, and control systems, and troubleshoot issues.

Qualifications

• High school diploma or GED.
• 1+ years hands-on experience installing, troubleshooting, and maintaining instrumentation, automation, or control systems.
• 1+ years using mechanical and/or electronic hand tools, including working from schematics on piping, valves, sensors, or control wiring.
• Ability to read electrical one-line drawings, AC/DC schematics, and bills of materials.
• Strong troubleshooting, communication, and organizational skills, with the ability to work independently or on a team under tight deadlines.

Responsibilities

• Install, configure, operate, and maintain instrumentation, automation, control, and SCADA systems for infrastructure, utility, and fluid systems.
• Fabricate and install fluid system components from drawings, including stainless and aluminum tubing and piping, ball and check valves, regulators, sensors, and gauges.
• Wire, verify, calibrate, and troubleshoot pressure transducers, thermocouples, and other sensors, and complete wiring on electrical support equipment.
• Configure and commission PLC, HMI, and SCADA applications.
• Assemble and wire industrial control panels to NFPA 79, NEC, and UL 508A, and install power system controls per NFPA 70/70B/70E, NESC, and IEEE standards.
• Perform high‑pressure hydrostatic and pneumatic testing, and resolve urgent issues during startup or production use.
• Redline, update, and troubleshoot electrical and pneumatic schematics using EPLAN or similar tools.
• Read drawings, data sheets, BOMs, and engineering sketches, and keep SCADA and as‑built documentation up to date.
• Support controls upgrades, commissioning, testing, turnover, and training as systems expand.
• Provide engineers with practical operations and maintenance feedback on system designs.
• Write concise work instructions from drawings and requirements.
• Support scopes of work and oversee contractor activities to keep projects moving.
• Train and mentor junior technicians
• Plan and complete weekly work with minimal disruption to running systems.

Skills

Instrumentation

Automation systems

SCADA

PLC programming

HMI development

Electrical schematics

Troubleshooting

Reading drawings

Documentation

Teamwork

Education

High school diploma or GED

Tools

EPLAN

AutoCAD

Job description

Instrumentation & Controls Technician

Job Summary

Core Group Resources is hiring Instrumentation & Controls Technicians for a major technology client’s infrastructure team. In this role, you will build, install, operate, and maintain the instrumentation and controls behind critical power, HVAC, utility, and fluid systems supporting production and power generation operations.

You will work hands‑on from the field device all the way through the PLC and SCADA layer, installing and troubleshooting sensors, valves, wiring, and control systems. The ideal candidate is a resourceful I&C technician who thrives in a fast‑paced, high‑reliability environment. Occasional travel to other client sites may be required.

Responsibilities

• Install, configure, operate, and maintain instrumentation, automation, control, and SCADA systems for infrastructure, utility, and fluid systems
• Fabricate and install fluid system components from drawings, including stainless and aluminum tubing and piping, ball and check valves, regulators, sensors, and gauges
• Wire, verify, calibrate, and troubleshoot pressure transducers, thermocouples, and other sensors, and complete wiring on electrical support equipment
• Configure and commission PLC, HMI, and SCADA applications
• Assemble and wire industrial control panels to NFPA 79, NEC, and UL 508A, and install power system controls per NFPA 70/70B/70E, NESC, and IEEE standards
• Perform high‑pressure hydrostatic and pneumatic testing, and resolve urgent issues during startup or production use
• Redline, update, and troubleshoot electrical and pneumatic schematics using EPLAN or similar tools
• Read drawings, data sheets, BOMs, and engineering sketches, and keep SCADA and as‑built documentation up to date
• Support controls upgrades, commissioning, testing, turnover, and training as systems expand
• Provide engineers with practical operations and maintenance feedback on system designs
• Write concise work instructions from drawings and requirements
• Support scopes of work and oversee contractor activities to keep projects moving
• Train and mentor junior technicians
• Plan and complete weekly work with minimal disruption to running systems

Requirements

• High school diploma or GED
• 1+ years of hands‑on experience installing, troubleshooting, and maintaining instrumentation, automation, or control systems
• 1+ years using mechanical and/or electronic hand tools, including working from schematics on piping, valves, sensors, or control wiring
• Ability to read electrical one‑line drawings, AC/DC schematics, and bills of materials
• Strong troubleshooting, communication, and organizational skills, with the ability to work independently or on a team under tight deadlines

Preferred Requirements

• 3+ years in industrial instrumentation, automation, controls, or fluid systems
• Experience fabricating and troubleshooting pneumatic, hydraulic, and complex fluid/mechanical systems
• Orbital or structural welding experience
• Experience with calibrated measuring instruments
• Experience operating overhead cranes, forklifts, and manlifts
• Certifications such as ISA CCST, NICET, Rockwell/Allen‑Bradley, or Siemens
• Experience with SEL, Allen‑Bradley, and Siemens control devices
• HMI development experience in Ignition and experience deploying and troubleshooting server/client SCADA applications
• IEC 61131 programming experience (ladder logic, structured text) and basic network configuration
• IT/OT network troubleshooting experience
• Familiarity with industrial protocols such as Modbus, DNP3, IEEE C37.111, and IEEE C37.115
• Experience with electrical CAD tools such as EPLAN or AutoCAD
• Scripting experience in C#, .NET, Python, and/or SQL