PLC Programmer Level 2

Hoffman Mechanical Solutions, Inc.; Charlotte (NC); Hybrid; USD 90,000 - 120,000; Full time

Job summary

Hoffman Mechanical Solutions, Inc. is seeking a PLC Programmer to design, develop, and implement Rockwell and Siemens PLC programs for mechanical, HVAC, plumbing, and electrical systems.

You will collaborate with engineering, project management, and field teams to ensure safe, efficient operations from concept through commissioning. The role requires 5+ years of PLC experience, BS in engineering, and strong knowledge of communication protocols (Modbus, Ethernet/IP, Profibus, BACnet).

Qualifications

• 5+ years of experience programming Rockwell and/or Siemens PLCs.
• Reading electrical and process control drawings and P&IDs.
• Experience with BAS controls and various process plant environments.
• Ability to read and interpret project specifications and customer requirements.
• Strong understanding of IT networks and industrial communication.

Responsibilities

• Develop system control strategies with design engineers.
• Program Rockwell and Siemens PLCs per project specs.
• Implement and test PLC programs, HMI integration, and SCADA interfaces.
• Conduct simulations, bench tests, and commissioning at client sites.
• Travel up to 30% to customer sites for deployment and support.

Skills

Rockwell PLC

Siemens PLC

PLC programming

BAS controls

Process plant controls

Education

Bachelor’s degree in Systems Engineering, Controls Engineering, Electrical Engineering, or related

Tools

Modbus

Ethernet/IP

Profibus

BACnet

Job description

The PLC Programmer is responsible for designing, developing, and implementing PLC programs that support the operation, monitoring, and control of mechanical, HVAC, plumbing, and electrical systems. This role ensures that all automated building and industrial systems function efficiently, safely, and in alignment with project specifications. The PLC Programmer collaborates closely with engineering, project management, and field teams to integrate control strategies, troubleshoot issues, optimize system performance, and deliver high-quality automation solutions from concept through commissioning.

What You Will Do

• Work with a team of design engineers to develop system control strategies.
• Develop Rockwell and Siemens PLC programs using:
• P&IDs
• Sequence of operation documentation
• Project plans and specifications
• Customer requirements and standards
• Perform integrations to different communication protocols, including (but not limited to) Modbus, Ethernet/IP, Profibus, and BACnet.
• Collaborate with SCADA developers to implement HMI integration and control via SCADA software.
• Develop simulation, bench test, factory acceptance test protocol documentation.
• Perform simulations, bench tests, factory witness tests, and on-site commissioning tests for each program.
• Position requires up to 30% of travel to customer sites for deployment of post-deployment support activities.

What You Will Bring to The Role

Required:

• 5+ years of experience programming Rockwell and/or Siemens PLC
• Understanding BAS controls and Process Plant controls in different environments.
• Must be able to initiate and execute programming tasks either individually or as a team, fulfilling all necessary responsibilities to ensure successful client delivery.
• Must be able to read electrical, process control drawings, and P&IDs.
• Must have a good understanding of mechanical, HVAC, plumbing, electrical, and process systems.
• Good understanding of IT networks
• Experience with multiple communication protocols and Gateway networking
• Modbus
• Ethernet/IP
• Profibus
• BACnet

Preferred:

• Bachelor’s degree in Systems Engineering, Controls Engineering, Software Engineering, Electrical Engineering, Mechatronics Engineering, or Computer Science.
• Experience with DDC, Tridium, or other BAS control systems.