Mill · 1 day ago
Senior Firmware Engineer
San Bruno, CA
Full-time
Onsite
Senior Level
$180K/yr - $225K/yr
5+ years expMill is focused on reducing waste, particularly in the food sector, as part of their mission to address climate change. They are seeking a Senior Firmware Engineer to design and implement low-level firmware for their next-generation connected products, collaborating with various teams to ensure seamless integration of connectivity features.
Animal FeedCleanTechFood ProcessingRecyclingSustainabilityWaste Management
Responsibilities
Design and implement robust firmware on MCU platforms, ensuring support for wireless connectivity, data upload, 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
Qualification
Required
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
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
Excellent communication and interpersonal skills to foster a collaborative, team-oriented environment
Company
Mill
Mill offers a kitchen bin that dries, shrinks, and de-stinks leftover food, eliminating food waste.
51-200 employees
H1B Sponsorship
Mill has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6)
2024 (4)
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$70.38MKey Investors
Climate Pledge FundPrelude Ventures
2025-12-16Series Unknown
2023-09-06Series C· $70M
2023-04-01Series Unknown· $0.38M
Leadership Team
Matt Rogers
Founder & CEO
Jeff Hoever
CFO
Recent News
FoodHack Weekly
2025-12-20
PR Newswire
2025-12-19
2025-12-19
Company data provided by crunchbase