I&C Technician: Field Instrumentation & PLC/SCADA

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

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.