PLC Engineer
About The Position
The Senior PLC Engineer will be responsible for designing, programming, commissioning, and troubleshooting control systems for industrial biogas, wastewater, and energy management facilities. This role involves firsthand work with Rockwell Automation platforms, LoRaWAN gateways, flow meters, wastewater monitoring instruments, electric submeters, and HMI/SCADA interfaces, including partial development in Ignition. The engineer will support CalBio’s digital transformation initiatives, ensuring reliable field data acquisition for environmental compliance, operations optimization, and LCFS/RIN reporting.
Requirements
- Bachelor’s degree in electrical engineering, Industrial Automation, Mechatronics, or related discipline (or equivalent firsthand experience).
- 3+ years of experience in PLC programming, HMI development, and field commissioning.
- Firsthand experience with Rockwell Automation technologies including RS Logix, Studio 5000, FactoryTalk View.
- Working knowledge of: LoRaWAN gateways and industrial data loggers Flow meters, wastewater meters, and electric submeters. HMI deployment and change management. Basic Ignition SCADA development or support
- Understanding of industrial protocols: Modbus TCP/RTU, Ethernet/IP, MQTT.
- Ability to read and interpret P&ID diagrams, wiring schematics, and control narratives.
Nice To Haves
- Experience in biogas, renewable energy, or wastewater operations.
- Exposure to Ignition Perspective or Vision modules.
- Experience integrating OT data into enterprise systems (historian, SQL, BMS).
- Rockwell Automation Certification
- ISA Certified Automation Professional (CAP) or working towards one.
Responsibilities
- Program, configure, and troubleshoot Allen-Bradley / Rockwell PLCs (ControlLogix, CompactLogix, MicroLogix).
- Design and implement ladder logic, function block diagrams, and structured text code.
- Develop and maintain HMI screens using FactoryTalk View or similar tools.
- Perform PLC panel configuration, wiring validation, and I/O commissioning.
- Integrate LoRaWAN gateways for telemetry data transmission across distributed assets.
- Interface with flow meters (gas/liquid), wastewater meters, and electric submeters.
- Configure and optimize analog and digital I/O signals from field devices.
- Ensure accurate data acquisition and reliable communication with SCADA/BMS platforms.
- Support deployment and basic configuration of Ignition SCADA modules.
- Develop SCADA tags, historian connections, alarms, and data logging structures.
- Assist in HMI/SCADA integration with MQTT brokers and OT networks.
- Commission new OT installations at digester plants, wastewater facilities, or energy hubs.
- Troubleshoot system faults, perform root cause analysis, and implement corrective actions.
- Ensure control systems adhere to safety, IEC 62443 cybersecurity standards, and facility regulatory requirements.
- Support data flow into reporting systems for GHG, LCFS, and renewable energy credits.
Benefits
- Standard CalBio benefits package is available: Medical, dental, vision, life insurance, 401k with match.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Number of Employees
51-100 employees
