Solar Inverter Hardware & Firmware

I’m in the final stretch of developing a single-phase grid-tie solar inverter and need a hands-on embedded engineer who can own the remaining work from schematic to fully tested code. The core of the assignment is three-fold: refine the hardware, finish the firmware in Embedded C, and make sure every subsystem integrates cleanly into a production-ready unit.

You’ll be extending an existing prototype, so I already have preliminary schematics, a partial PCB, and basic control algorithms. Your job is to tighten the design for manufacturability, complete the control and protection code, and verify that the whole stack—DC-link, power stage, DSP/MCU, communication, and grid-sync hardware—behaves flawlessly under real-world conditions.

Because this is a grid-connected device, you need strong power-electronics intuition: high-frequency switching, current sensing, MPPT, anti-islanding, and all the safety odds and ends that go with them. Equally important is confidence in Embedded C on resource-constrained controllers; deterministic timing is non-negotiable when we’re shaping a sine wave that meets local utility specs.

Deliverables I expect:
• Updated schematics and complete, routed PCB files ready for fabrication
• Comprehensive BOM with manufacturer part numbers and alternates
• Well-commented firmware source, buildable in the provided toolchain
• In-circuit test plan and recorded results for efficiency, THD, protection triggers, and grid compliance
• Brief integration guide so the manufacturing team can reproduce your setup without guesswork

I’m ready to start the moment we agree on milestones and timelines, and I’ll make hardware on my end available for rapid iteration and validation. If you thrive on squeezing performance out of both copper and code, let’s finish this inverter the right way.