Job Description: Senior Embedded Software Engineer Location: SFO Bay area / Hybrid Industry: Clean energy/ Software 1st Avenue Power (1AP) is creating a future where every nation, business, and community thrives with limitless access to cheap, reliable clean power. We deliver rapidly deployable power systems that generate Hyperfirm™ inexpensive clean energy, leveraging the abundance of solar to liberate energy-constrained industries like hyperscale datacenters. As our first Embedded Software Engineer, you will be given a clean slate to architect and build the Embedded layer of a next-generation utility-scale power system.

This is a high-agency role for any Engineer who wants to build software that controls massive amounts of energy in the physical world. You will take ownership of initial architectural decisions, from the communication stack to cloud telemetry, building an ecosystem without the burden of legacy technical debt.

RESPONSIBILITIES

System Integration: Design and deploy comprehensive software solutions for supervisory control, OTA updates, telemetry, and manufacturing self-test protocols across solar, storage, and load subsystems. Hardware Interfacing: Develop low-level drivers and communication stacks for power electronics using RS232/RS485, Modbus RTU, and CANbus to ensure seamless hardware-to-software connectivity. Lead board bring-up efforts, ensuring hardware-firmware integration from power-on to full functionality.

Conduct comprehensive microcontroller and peripheral evaluations to select optimal components for system performance. Architect and maintain robust device infrastructure, including secure bootloaders, automated firmware provisioning, and system diagnostics. Safety-Critical Logic: Engineer high-reliability monitoring systems for arc fault detection and thermal management, implementing rapid software responses to hardware-level interrupts and fault signals.

Architecture: Take ownership of initial decisions for Linux-based gateways and communication layers from a clean slate. Real-Time Control: Develop, enhance, and debug new and existing real-time software in embedded Linux and RTOS environments. Validation: Drive a test-driven mentality where unit testing, software-in-the-loop (SIL), and hardware-in-the-loop (HIL) are as important as developing new firmware.

Collaboration: Work with hardware teams to co-design optimal solutions for low-latency control, signal conditioning (level shifting), and system stability in high-noise DC environments.

REQUIREMENTS

Education: BS or MS in Computer Engineering, Computer Science, Electrical Engineering, or a related field. Languages: Proficiency in modern C/C++, with a strong preference for Rust or Go in high-concurrency systems. Experience: 5+ years of hands-on experience in embedded systems, specifically with complex, physical hardware products from prototype to production.

Embedded Fundamentals: Experience with board bring-up, bootloaders, and kernel/driver development on embedded Linux or RTOS platforms. Power Electronics: Proven experience in the control and monitoring of power conversion systems, including inverters, converters, and battery management systems (BMS). Power Electronics Protocols: Proven experience in the control and monitoring of power conversion systems (inverters, BMS) and a strong grasp of system-level power architecture and communication protocols (Modbus, CANbus, SPI, I2C).

3V MCUs) and the use of optoisolators for noise immunity. Domain Knowledge: Basic understanding of Utility grid electrical architectures, MPPT charging algorithms, and power electronics concepts. Hardware/Diagnostic Skills: Advanced proficiency in using laboratory equipment (oscilloscopes, logic analyzers) for hardware debugging and system-level troubleshooting.

Why Join Us

? Impact: Your code will directly manage renewable energy flow, helping