Carollo Engineers is a leading engineering firm dedicated exclusively to water. For over 90 years, we've specialized in the planning, design, and construction of water, wastewater, stormwater, and reuse facilities, bringing innovative and sustainable solutions to the water sector's most complex challenges.

We work with water agencies, municipalities, utilities, research organizations, and private companies across various industries, including technology, manufacturing, and beyond. These clients choose Carollo because we employ some of the most knowledgeable and experienced professionals in the world. When you join our team, you'll work alongside industry leaders who are advancing the science of water, protecting public health, and building resilient communities.

Carollo's vision is to be the best water consulting firm and the best place for you to build your career. If you're passionate about making a difference in this critical field, we invite you to explore a career with Carollo.

This posting is scheduled to expire on 02/28/2026 if the position has not been filled prior to that date.

• Design, develop, and implement SCADA and PLC control systems for water and wastewater treatment processes
• Program, test, and troubleshoot PLCs (Allen Bradley, Schneider, Siemens, etc.) to control various plant equipment and processes
• Develop HMI applications for operator interfaces, including configuring graphics, alarms, and data trends to support plant operations
• Maintain and modify existing SCADA systems, ensuring efficient and reliable performance across all operational systems
• Collaborate with engineering teams to develop system specifications and requirements, integrating automation solutions with mechanical, electrical, and process systems
• Perform system testing, simulation, and commissioning of SCADA and PLC systems in new installations or upgrades
• Diagnose and resolve control system issues, providing technical support for system malfunctions or operational problems
• Participate in field service and commissioning activities, ensuring proper implementation of control strategies and seamless system startup
• Document control system designs and configurations, including wiring diagrams, PLC logic, and HMI screen layouts
• Stay updated on industry trends and technology advancements, applying knowledge to continuously improve system functionality and efficiency

• 5-10 years of hands-on experience with SCADA, PLC, and HMI programming in industrial automation, preferably in water/wastewater treatment or a similar process-driven environment
• Proficiency in programming PLCs (e.g., Allen Bradley, Siemens, Schneider) and experience with automation protocols such as Modbus, Ethernet/IP, or Profibus
• Experience with SCADA software platforms such as Wonderware, Ignition, GE iFix, or similar
• Understanding of HMI development, including graphical user interfaces, alarm management, and real-time data trending
• Strong foundation in control systems design and troubleshooting, including electrical and instrumentation systems
• Knowledge of networking and communication protocols used in industrial control systems (e.g., TCP/IP, OPC)
• Familiarity with industrial control hardware, including VFDs, sensors, actuators, and other field devices
• Ability to read and interpret electrical schematics and P&IDs (Piping and Instrumentation Diagrams)
• Proven ability to diagnose and troubleshoot control system issues and conduct root cause analysis
• Strong technical documentation skills, including the ability to write technical reports, user manuals, and system documentation
• Excellent communication skills, both written and verbal, for collaborating with multidisciplinary teams and providing technical support to operators and maintenance personnel
• Willingness to travel to job sites for installation, commissioning, and troubleshooting