Mill

Firmware Engineer

San Bruno, CA, US

In-personFull time roleMid Level, Senior Level

2 months ago

About the Job

Mill is all about answering a simple question: how can we prevent waste? Less waste can save time, money, energy, maybe even our planet. And there’s no better place to start than food. Food waste is one of the most solvable climate problems facing us today. Plus, our trash really stinks. It’s gross, heavy, and our least favorite chore. At Mill we are striving to build a better environment for all, as we take on climate and kitchen change.

We're seeking a Senior Firmware Engineer to design, develop, and implement low-level firmware for our next-generation connected product. You'll work closely with cloud services, mobile app, product and hardware teams to integrate Wi-Fi, Bluetooth, and other connectivity features seamlessly, while actively collaborating and contributing as a key team player.

Key Responsibilities

  • Design and implement robust firmware on MCU platforms, ensuring support for wireless connectivity, OTA updates, sensor integration, and other core functionalities.
  • Develop and optimize communication stacks for Wi-Fi, Bluetooth, and other wireless protocols, ensuring reliable pairing, network configuration, and data exchange.
  • Write efficient low-level code that integrates with hardware peripherals (e.g., RF modules, sensors) using standard interfaces such as GPIO, I2C, SPI, and UART.
  • Apply best practices for error handling and performance optimization to support robust connectivity features.
  • Work closely with cross-functional teams to rigorously debug, test, and troubleshoot firmware, ensuring optimal performance, reliability, and security.
  • Engage actively with multidisciplinary teams, sharing insights and aligning on system-level requirements to drive cohesive project success.
  • Contribute to the deployment readiness of our systems for large-scale production.
  • Evaluate code from peers to maintain best practices in style, accuracy, and efficiency.

Required Qualifications

  • Bachelor’s degree in Computer Science, Electrical Engineering, or equivalent experience, with 5+ years in embedded systems development.
  • Deep understanding of computer networking and firmware for data-intensive applications.
  • Strong expertise in C programming for embedded systems, with a solid grasp of memory management and real-time operating system principles.
  • Hands-on experience with connectivity modules (Wi-Fi, Bluetooth) and RTOS (FreeRTOS preferred).
  • Proficiency in hardware-software interfacing, including protocols like GPIO, I2C, SPI, and JTAG.
  • Proficiency with troubleshooting tools (debuggers, Wireshark) and measurement equipment (multimeters, oscilloscopes, logic analyzers).
  • Demonstrated expertise in debugging and rigorous testing to quickly identify and resolve complex issues.
  • Familiarity with version control, CI, and build systems.

Preferred Skills

  • Experience with ESP32 microcontrollers.
  • Working knowledge of cloud computing protocols (e.g., MQTT) and platforms like AWS (AWS CDK is a plus).
  • Experience with cellular connectivity.
  • Familiarity with or knowledge of mobile app development is a plus.
  • Excellent communication and interpersonal skills to foster a collaborative, team-oriented environment.

The estimated base salary range for this position is $170k to $225k, which does not include the any benefits or equity. Various factors are considered in making compensation decisions, including but not limited to experience, training, licensure and certifications, and business and organizational needs.

About the Company

Mill Logo

Mill

San Bruno, California, USA

101-250

<p>Trash stinks. Together, we can do better. Mill has created a new system to help you outsmart waste at home.</p>

Similar Jobs

Range energy Logo

Firmware Engineer

Firmware Engineer

  • Range energy
  • Mountain View, CA, US
  • In-person
  • Full time role

Achieve over 40% fuel savings and up to 70% emissions reduction with versatile Range trailer systems.

10 days ago

Zoox Logo

Systems Integration Engineer

Systems Integration Engineer

  • Zoox
  • Hayward, CA, US
  • In-person
  • Full time role

Pioneering electric autonomous vehicles for low-carbon, congestion-free urban transportation.

16 days ago

Dcbel Logo

Embedded Linux Developer

Embedded Linux Developer

  • Dcbel
  • Montreal, QC, CA
  • In-person
  • Full time role

Empowering homes with sustainable energy through smart AI-integrated technology.

7 days ago

Form energy Logo

Senior Staff Firmware Engineer

Senior Staff Firmware Engineer

  • Form energy
  • Berkeley, CA, US
  • In-person
  • Full time role

Affordable, long-duration energy storage for a reliable, 100% renewable electric grid.

2 months ago

Corinex Logo

Engineer, Firmware Development

Engineer, Firmware Development

  • Corinex
  • Valencia, VC, ES
  • Remote
  • Full time role

Optimizing grid flexibility for smarter, low-carbon energy consumption through cutting-edge digital solutions.

About 2 months ago

Helion Logo

Firmware Engineer

Firmware Engineer

  • Helion
  • Everett, WA, US
  • In-person
  • Full time role

Revolutionizing energy with unlimited, clean fusion power.

24 days ago

Corinex Logo

Team Lead, Firmware Development

Team Lead, Firmware Development

  • Corinex
  • Hybrid, Remote
  • Full time role

Optimizing grid flexibility for smarter, low-carbon energy consumption through cutting-edge digital solutions.

15 days ago

Joby aviation Logo

Senior Embedded Software Engineer, Hardware Emulation

Senior Embedded Software Engineer, Hardware Emulation

  • Joby aviation
  • Santa Cruz, CA, US
  • In-person
  • Full time role

Transforming personal mobility with eco-friendly, electric aircraft for safe, quiet, and fast travel.

14 days ago

Eridan Logo

Embedded Software Engineer

Embedded Software Engineer

  • Eridan
  • Sunnyvale, CA, US
  • In-person
  • Full time role

Revolutionizing 5G with energy-efficient radios to significantly reduce power consumption.

11 days ago

Enphase energy Logo

Senior Embedded Firmware Engineer

Senior Embedded Firmware Engineer

  • Enphase energy
  • Austin, TX, US
  • In-person
  • Full time role

Pioneering advanced solar solutions for a sustainable, solar-powered planet.

4 days ago