Modbus Jobs in California (NOW HIRING)

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Job Summary

The PV/BESS Systems Engineer is responsible for the management and execution of engineering design reviews for Solar Photovoltaic (PV) and Battery Energy Storage Systems (BESS) across the client portfolio. This role focuses on energy resilience, safety logic, and performance analytics, ensuring that renewable energy assets are safely and efficiently integrated into the client infrastructure. The Engineer reviews grid-tie sequences, inverter logic (Modbus/TCP), and fire/thermal safety protocols (for BESS) to ensure compliance with standards and safety best practices. This role interacts with sustainability leads, fire life safety teams, and third-party solar/battery installers to manage the full project lifecycle from design intake to performance telemetry onboarding.

Responsibilities:

Design and Engineering:

• Conduct design reviews for PV and BESS electrical infrastructure to ensure compliance with grid-tie requirements, safety standards, and client-specific design guidelines.

• Perform technical reviews of inverter control sequences, Modbus mapping, and BESS fire suppression/thermal runaway logic.

• Conduct field inspections of array placement and safety equipment (Rapid Shutdown) to proactively identify implementation risks and deviations from the approved design.

• Coordinate with project teams and represent the client on the project team to ensure safety and sustainability requirements are effectively resolved within the project schedule.

• Collaborate with installers and consultants to ensure system communication protocols match Google Network security requirements.

Project Management:

• Provide regular progress updates regarding energy production estimates vs. actual performance ratios (PR).

• Proactively identify process deficiencies in the renewable energy onboarding workflow and develop improvements.

• Ensure internal records, safety manuals, and performance databases are verified via ongoing quality assurance (Gate 5).

• Prepare and present performance analytics reporting to stakeholders to drive sustainability goals.

Implementation and Commissioning:

• Oversee the installation and configuration of communication gateways and secure network drops outside the building envelope.

• Develop and execute comprehensive commissioning plans for rapid shutdown sequences and BESS charge/discharge cycles.

• Troubleshoot inverter communication and resilience failover issues during commissioning and operation.

• Perform "Performance Telemetry Onboarding" to transition new assets onto monitoring servers and validate data accuracy.

• Evaluate operating trends subsequent to commissioning to validate that peak-shaving and energy storage logic is performing as designed.

Qualifications required:

• Bachelor's degree in Electrical Engineering, Renewable Energy Engineering, or a related facilities field with energy storage experience.

• 2-5 years of experience in Solar PV design, BESS integration, or renewable energy infrastructure.

• Strong knowledge of inverter control theory, Modbus/TCP, and safety standards for energy storage (e.g., UL 9540).

• Experience with major PV/BESS platforms and energy monitoring software.

Preferred Qualifications:

• Previous experience in design, commissioning, and operational support of BESS thermal management systems.

This position does not provide visa sponsorship. Candidates must be authorized to work in the United States without sponsorship.

Estimated compensation for this position:

This range is an estimate and actual compensation may differ. Final compensation packages are determined by various considerations including but not limited to candidate qualifications, location, market conditions, and internal considerations.

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If this job description resonates with you, we encourage you to apply, even if you don't meet all the requirements. We're interested in getting to know you and what you bring to the table!

Personalized benefits that support personal well-being and growth:

JLL recognizes the impact that the workplace can have on your wellness, so we offer a supportive culture and comprehensive benefits package that prioritizes mental, physical and emotional health. Some of these benefits may include:

• 401(k) plan with matching company contributions

• Comprehensive Medical, Dental & Vision Care

• Paid parental leave at 100% of salary

• Paid Time Off and Company Holidays

• Early access to earned wages through Daily Pay

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