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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! About the Role: This position sits within our Testing group, where you will work with a small team to develop fully functional prototypes that demonstrate new, advanced operation and control for autonomous grid connection, management, and regulation. As a Senior Firmware DVT (Design Verification Test) Engineer, you will contribute to the verification and test of Enphase's inverter firmware, gateway, and cloud functions and communications — ensuring they meet engineering requirements, design specifications, and worldwide safety and grid standards.
Job Responsibility
Develop test strategies and plans to verify that Enphase's inverter firmware, gateway, and cloud functions and communications perform per engineering requirements and design specifications
Develop and execute test strategies to ensure safety and optimal functionality of Enphase's firmware to meet worldwide standards
Design and implement automated test systems in Python and Ruby, enabling continuous integration for the firmware development team
Validate firmware communication interfaces and protocols (e.g., Ethernet/TCP-IP, Modbus/TCP, I2C, SPI, UART, SMBus, and power line carrier) using protocol and logic analyzers
Collaborate with hardware and firmware engineers to ensure firmware is designed for test
Confer with Quality Assurance, Development, and Product Management on project planning, and ensure effective testing of Enphase's firmware within design constraints
Use test automation, power meters, oscilloscopes, DC supplies, and other lab test equipment to ensure complete functional, efficiency, and safety test coverage for Enphase's hardware and firmware
Coach and train new members of the technical staff on Enphase's test equipment, procedures, and automation software
Requirements
BS/MS in Electrical Engineering, Electronics Engineering, and/or Computer Science
5+ years of experience in a similar role as an embedded firmware test/DVT/QA engineer
Strong Python programming for controlling test equipment, test framework development, and test automation, including Python bindings for Linux and communication packages (TCP/IP sockets, SMBus, pyModbusTCP, PiCloud, etc.)
Functional validation experience with Ethernet/I2C/SPI/UART/power line carrier-based communication systems, and use of protocol and logic analyzers
Experience across the stages of embedded firmware (preferably Linux/RTOS-based) design, implementation, test, deployment, and maintenance
Experience with firmware integration and testing
Experience with 800V–1500V high-voltage DC and 277/480V three-phase AC voltages
Nice to have
Basic knowledge of relevant worldwide standards such as IEEE 1547, 1741 SA, CA Rule 21, HECO SRD 1.1, AS/NZS 4777.2:2015, SAND2013-9875, UK G83/2, and Sandia standards
Knowledge of worldwide advanced grid functions and fault conditions
Familiarity with AC grid simulators and solar panel simulators