Senior PLC Controls Engineer – Onsite Tucson

Simarn Solutions; Arizona; On-site; USD 90,000 - 115,000; Full time

Job summary

Simarn Solutions in Tucson, Arizona is seeking a PLC Controls Engineer to design, program, and optimize industrial control systems for Caterpillar equipment. You will work with Allen Bradley, Siemens, and related platforms across electrical and mechanical domains.

The role emphasizes system integration, debugging, and delivering reliable, high-performance control solutions through collaboration with multidisciplinary teams.

Qualifications

• 5-9 years of experience in PLC/Automation engineering.
• Hands-on experience with Allen Bradley or Siemens PLCs.
• Strong knowledge of SCADA, DCS, and HMI development.
• Experience in system integration, commissioning, and test/debug cycles.
• Ability to diagnose complex automation issues and perform root‑cause analysis.
• Excellent collaboration with multi-disciplinary teams.

Responsibilities

• Design and implement control system architecture, automation logic, and algorithms based on project requirements.
• Program and configure PLCs, HMI, SCADA, and DCS systems for new and existing equipment.
• Work with Allen Bradley, Siemens, or equivalent PLC platforms for automation development.
• Perform system integration, testing, commissioning, and debugging to ensure optimal performance.
• Troubleshoot and diagnose issues in PLC programs, control panels, sensors, and field devices.
• Analyze existing equipment and processes to identify automation enhancements and optimization opportunities.
• Document control logic, system configurations, wiring diagrams, and maintenance procedures.
• Collaborate closely with mechanical, electrical, and project engineering teams on design reviews and implementation.

Skills

PLC Programming

SCADA/DCS

HMI Development

System Integration

Troubleshooting

Root Cause Analysis

Cross-functional Teamwork

Communication

Tools

Allen Bradley PLCs

Siemens PLCs

Job description

Simarn Solutions in Tucson, Arizona is seeking a PLC Controls Engineer to design, program, and optimize industrial control systems for Caterpillar equipment. You will work with Allen Bradley, Siemens, and related platforms across electrical and mechanical domains.

The role emphasizes system integration, debugging, and delivering reliable, high-performance control solutions through collaboration with multidisciplinary teams.