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About the Role

Contribute to the system-level control firmware and software for the Energy Management System (EMS) and SCADA layer of MW/MWh-scale Battery Energy Storage Systems (BESS), spanning outdoor cabinets and containerized platforms. Build the master site controller that coordinates subsystems and interfaces with utility and grid SCADA.

Responsibilities

• Contribute to the development of system-level control firmware and software for the BESS EMS and master site controller.
• Implement real and reactive power dispatch, state-of-charge (SOC) and state-of-health (SOH) management, and coordination of multi-vendor subsystems.
• Develop control logic for grid services such as frequency response, voltage regulation, capacity firming, peak shaving, energy arbitrage, and black start.
• Support integration of the BESS control system into utility, ISO/TSO EMS/SCADA systems and higher-level plant controllers.
• Implement and maintain industrial communication interfaces using Modbus, DNP3, OPC-UA, MQTT, and IEC 61850.
• Develop and validate controls specifications, functional descriptions, points lists, and data-integration mappings and telemetry.
• Help ensure real and reactive power commands comply with interconnection agreements, power purchase agreements, and grid codes.
• Apply cybersecurity and IT/OT best practices to controller and SCADA network architecture.
• Develop unit and system test software, and validate control behavior using simulation and hardware-in-the-loop.
• Support site bring-up, commissioning, witness testing, and acceptance with utility and AHJ stakeholders.
• Contribute to PR reviews, documentation rigor, and well-managed release branches.
• Utilize AI tools to accelerate firmware and software development and testing flow.

Requirements

• BS/MS in Electrical Engineering, Computer Engineering, Controls Engineering, or a related field.
• 5+ years developing embedded/system firmware or control software, preferably for power systems, BESS, microgrids, or grid-connected products.
• Experience with EMS, site/plant controllers, or SCADA systems for energy storage or power generation.
• Proficiency in C, C++, and Python; familiarity with IEC 61131-3 and/or C# is a plus.
• Experience with industrial communication protocols (Modbus, DNP3, OPC-UA, MQTT, and IEC 61850).
• Understanding of BESS architecture and coordination with BMS, PCS, and thermal derating logic.
• Familiarity with grid-services use cases and ISO market participation.
• Working knowledge of grid and safety standards such as IEEE 1547, UL 1741-SB, UL 9540, and IEC.
• Experience with Linux-based controls environments; familiarity with containerized or virtualized deployments is a plus.
• Understanding of cybersecurity and IT/OT best practices for OT and SCADA networks.
• Ability to troubleshoot within complex systems, including hands-on lab and field testing.
• Clear written and verbal communication, including strong presentation skills.

Skills

• Embedded firmware development
• System firmware development
• Control software development
• Power systems
• BESS
• Microgrids
• Grid-connected products
• EMS
• Site controllers
• Plant controllers
• SCADA systems
• Energy storage
• Power generation
• C
• C++
• Python
• IEC 61131-3
• C#
• Modbus
• DNP3
• OPC-UA
• MQTT
• IEC 61850
• BESS architecture
• BMS coordination
• PCS coordination
• Thermal derating logic
• Grid services
• Frequency response
• PFR/FFR
• AVR
• Capacity firming
• Peak shaving
• Energy arbitrage
• Black start
• ISO market participation
• IEEE 1547
• UL 1741-SB
• UL 9540
• IEC standards
• Linux
• Containerized deployments
• Virtualized deployments
• Docker
• VMware
• Cybersecurity
• IT/OT best practices
• OT networks
• SCADA networks
• Troubleshooting
• Lab testing
• Field testing
• Written communication
• Verbal communication
• Presentation skills
• BESS integration with Tier-1 utility/ISO SCADA systems
• Higher-level plant controllers integration
• SCADA/PLC platforms
• Ignition
• SEL RTAC
• Modicon
• Historian platforms
• Data platforms
• Site commissioning support
• Field deployment support
• Agile software development
• Git
• CI/CD

Location

• Austin, Texas

Work Type

• On-site

Experience Level

• Senior
• 5+ years

Education Level

• BS/MS in Electrical Engineering, Computer Engineering, Controls Engineering, or a related field

Salary/Compensations

• $90,000 to $135,000 per year

Benefits

• Bonus
• Equity
• Benefits

About the Company

• Enphase Energy is a global energy technology company and a leading provider of solar, battery, and electric vehicle charging products.
• Founded in 2006, our innovative microinverter technology revolutionized solar power, making it a safer, more reliable, and scalable energy source.
• Today, the Enphase Energy System enables users to make, use, save, and sell their own power.
• Enphase is also one of the most successful and innovative clean energy companies in the world, with more than 80 million products shipped across 160 countries.
• Join our dynamic teams designing and developing next-gen energy technologies and help drive a sustainable future!