Embedded Firmware Engineer - Power Electronics

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RDE Full-Time Employee Professional Merrimack, NH, US

Salary Range: $ To $ Annually

Job Description

Trystar’s team members are our most important asset. We are looking for a Staff Embedded Firmware Engineer – Power Electronics – to write, integrate, and verify the embedded real-time firmware of our power conversion products, including DC/DC converters, three-phase grid-tied inverters, and energy storage systems, from architecture through validation, certification, and production release. You will turn the control strategies that our controls engineers define and simulate into production-quality code on microcontroller- and FPGA-based control boards, and you will own the drivers, communications, memory, diagnostics, and update functions around that code.

You will lead the firmware workstream of new product programs as a senior individual contributor, set the technical direction of the firmware code base, and mentor the engineers who build it with you.

Location

Merrimack, NH, or Pointe-Claire, QC, is preferred. Travel within North America up to 20%.

• Develop, implement, test, and maintain embedded real-time firmware in C and C++ for power conversion systems, including DC/DC converters, three-phase grid-tied inverters, and energy storage systems.
• Implement in real-time code the control algorithms that controls engineers define and simulate, including current, voltage, and power regulation, pulse-width modulation, Clarke and Park transformations, phase-locked loops, protection, and grid-support functions, within sampling, timing, and computational-delay budgets.
• Integrate and verify code generated from MATLAB and Simulink models, and keep firmware behavior traceable to the control specification.
• Design the real-time software architecture of control boards, including task scheduling, interrupt service routines, bootloaders, board-support packages, and hardware abstraction layers.
• Develop low-level peripheral drivers and interface software for ADC, PWM, timers, GPIO, I2C, SPI, UART, CAN, and other microcontroller peripherals.
• Design and develop embedded communication software, including TCP/IP stack integration, Ethernet-based communication, CAN, Modbus, and protocol-level diagnostics for connected power electronics products.
• Implement and debug external memory interfaces, including EEPROM, Flash, MRAM, and SD card, for data logging, configuration storage, field firmware updates, and fault-record handling.
• Test and debug firmware in-system and on processor-in-the-loop and hardware-in-the-loop platforms, using debuggers, emulators, oscilloscopes, and embedded instrumentation, and confirm with controls engineers that the code reproduces the simulated control performance.
• Support IEEE 1547 and UL 1741 grid-support inverter certification testing with firmware builds, parameter configuration, diagnostics, and defect resolution.
• Apply disciplined software practices, including version control, code reviews, static code analysis, automated unit testing, and release management.
• Write firmware requirements, software design specifications, and user documentation for embedded control software.
• Collaborate with controls, hardware, systems, tests, compliance, and manufacturing engineers on new system architectures, from concept through validation and commercial-scale manufacturing.
• Develop and manage detailed schedules for the firmware workstream of your projects.
• Mentor junior firmware and software engineers.

REQUIRED

• Bach…