Sr. Grid Integration Engineer

The Impact You’ll Make:

As a Sr. Grid Integration Engineer, you will architect the software and control fabric that turns our power conversion hardware, energy storage, and balance-of-plant equipment into a single, dispatchable power plant. You will build the EMS/PPC layer that sits above our PCS, MPPTs, batteries, meters, and switch gear — defining how every device talks, how setpoints flow from the grid operator down to the silicon, and how the plant behaves under every operating condition the grid can throw s is a high‑agency role where your concept of operations, sequence diagrams, and control logic become the operating system of our power plants.

• Architect and build the Energy Management System (EMS) and Power Plant Controller (PPC) software stack that orchestrates inverters, MPPTs, battery systems, meters, and balance‑of‑plant equipment as a single grid‑interactive plant.
• Own the plant Concept of Operations — author sequence diagrams, state machines, and control narratives that describe power flow under every operating mode (PV‑only, charging, discharging, curtailment, frequency response, voltage regulation, black start, night‑mode transitions, fault ride‑through).
• Integrate power electronics (inverters, MPPTs, DC‑DC converters), revenue and protection‑class meters, BOP equipment, and PV systems into a unified software fabric using industry‑standard protocols:
  DNP3, IEC 61850 (MMS, GOOSE, Sampled Values), Modbus TCP/RTU, Sun Spec Modbus, MESA‑ESS, IEEE 2030.5 (CSIP), OPC UA, and CAN
  .
• Develop plant‑level control logic for active power dispatch, reactive power/voltage support, ramp‑rate control, frequency response (PFR/AGC), autonomous curtailment, and setpoint coordination across all device classes.
• Implement and tune grid‑following and grid‑forming control strategies at the plant level — coordinating inverter modes, virtual inertia, droop response, and ride‑through behavior between the PPC and underlying device controls.
• Build the SCADA architecture for the plant: HMI, historian, alarms, event logging, time synchronization (PTP / IRIG‑B), redundancy, and cybersecurity hardening (IEC 62443, NERC CIP awareness).
• Develop control logic on SEL RTAC, Codesys (IEC 61131‑3) PLCs, and model‑based platforms (MATLAB / Simulink) — moving cleanly from simulation to deployable runtime code.
• Use MATLAB / Simulink for control design, model‑based development, plant dynamics modeling, and tuning of EMS/PPC loops before field deployment.
• Ensure plant compliance with IEEE 1547‑2018, IEEE 2800, UL 1741 SB/SC
  , FERC Order 2023, and applicable ISO/utility interconnection requirements through correct implementation of protection, ride‑through, and grid‑support functions.
• Partner closely with embedded software, power electronics, and hardware teams to define interface requirements and translate plant‑level behavior into firmware and device‑level requirements.
• Lead commissioning and on‑site bring‑up of EMS/PPC — protocol mapping verification, end‑to‑end signal tracing, control loop tuning, FAT/SAT, and grid‑code witness testing with the utility/ISO.
• Document controls architecture, protocol maps, point lists, and operating procedures to a standard that supports independent engineering review, AHJ approval, and operator training.

• Degree in Electrical Engineering, Controls, or equivalent experience with a focus on Power Systems, Control Theory, and software‑defined controls.
• 5+ years of experience building EMS, PPC, or plant‑level controls for utility‑scale solar, storage, hybrid, or wind power plants.
• Deep working knowledge of utility and industrial communication protocols:
  DNP3, IEC 61850, Modbus TCP/RTU, Sun Spec, MESA‑ESS, IEEE 2030.5, OPC UA, CAN — including hands‑on protocol mapping, point list design, and debugging (Wireshark, protocol analyzers, simulators).
• Hands‑on experience with SEL RTAC
  , Codesys
  , and MATLAB / Simulink for model‑based control development. Experience with industrial HMIs and historians (Ignition, AVEVA/Wonderware, Canary, OSIsoft PI) is a strong plus.
• Strong understanding of grid‑following and grid‑forming inverter control
  , droop response, virtual inertia, and…