Engineer, Principal

Principal Controls Engineer - PLC/SCADA

We are seeking a Principal Controls Engineer to join our team to support the development, implementation, and maintenance of control systems for our PV (Photovoltaic) and BESS (Battery Energy Storage System) projects. The ideal candidate will have experience with PLC programming, SCADA systems, and HMI development.

Key Responsibilities:

• Design, develop, and implement PLC-based control systems for renewable energy projects
• Program PLCs using various methods including function blocks, structured text, and ladder logic
• Configure and maintain SCADA systems for monitoring and controlling PV and BESS installations
• Develop and test HMI interfaces using Ignition platform
• Develop control narratives, O&M manuals, and Functional Requirement Documents (FRDs) for projects
• Conduct Factory Acceptance Testing (FAT) for all projects
• Troubleshoot control system issues and implement appropriate solutions
• Collaborate with cross-functional teams to ensure successful project delivery
• Document control system designs, configurations, and modifications
• Support commissioning and startup activities for new and modified systems

Required Qualifications:

• Bachelor’s degree in Electrical Engineering, Computer Engineering, or related technical field
• 15+ years of experience with PLC programming and industrial control systems
• Proficiency in programming using function blocks, structured text, and ladder logic
• Experience with industrial communication protocols (Modbus, DNP3, OPC, etc.)
• Strong analytical and problem-solving skills
• Excellent written and verbal communication skills
• Ability to work in a collaborative team environment

Preferred Qualifications:

• Experience with Schneider M340 or M580 PLCs
• Experience with Ignition HMI platform
• Knowledge of renewable energy systems, particularly solar PV and battery storage
• Understanding of electrical power systems and instrumentation
• Experience with project lifecycle from design through commissioning
• Familiarity with industry standards and best practices for control systems

Physical Requirements:

• Ability to work in an office environment
• May require occasional travel to field sites for implementation and troubleshooting

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at employeeservices@apexsystems.com or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package.