Principal Embedded Software Engineer

What you will do

• Designing and implementing embedded software for battery system control and management and for microinverter operation and control.
• Simulating new algorithms for power control and management.
• Developing unit and system test software.
• Hands-on bring up and debugging of battery and inverter hardware with embedded firmware
• Validating algorithms using system simulation tools.
• Working with hardware engineers to test and troubleshoot prototype designs.
• Firmware testing
• Mentor Junior Engineers

Who you are and What you bring

• MS/MS/PhD Electrical Engineering or Computer Engineering or Computer Science
• BS and 15+ years / MS and 12+ years / PhD and 8+ Years’ experience in a similar (non-academic) role as an embedded software or firmware engineer
• Expertise in C++, C, and Assembly for real-time applications
• Significant experience with battery management and related algorithms, including protection, cell balancing, state of charge estimation, and state of health estimation
• Expertise in both bare metal and small real-time operating systems – designing and architecting firmware using both state-machines and RTOS threads for time-critical applications
• Familiarity with designing power-efficient code – using state-machines and threads to maximum time when a processor is asleep
• Able to understand and implement digital signal processing (DSP) concepts in a microcontroller environment
• Familiarity with ARM Cortex-M4/7 architectures
• Familiarity with evaluating CPU versus hardware processing requirements and trade-offs for cost-effective designs
• Ability to troubleshoot firmware related issues within complex systems
• Ability to test code and hardware both with and without external test equipment such as oscilloscopes, power meters, etc.
• Familiarity with software development processes. E.g. Agile, Structured, Object Oriented, etc.
• Familiarity with development tools such as GCC, GDB, Eclipse, GNU Make, etc.
• Familiarity with software code management tools such as GIT, Mercurial, etc.
• Familiarity with unit test frameworks such as, cmock, CPPUTEST, etc.
• Ability to carry a design task from concept to implementation
• Ability to document engineering requirements, document solutions, and test new firmware designs
• Familiarity with developing functional safety firmware and related standards such as UL1998

Additional Experience

• STM32 Cortex-M family development experience
• Zephyr or FreeRTOS development experience
• AWS IoT experience
• Desktop and embedded Linux experience
• In depth knowledge of relevant worldwide standards such as UL1973, IEC 61508, ISO 26262, IEC62133 and IEC62619
• Knowledge in worldwide electrical advanced grid functions and fault conditions