Joni Hendrickson

• contact@joni.site
• github.com/hello-joni
• linkedin.com/in/joni-hendrickson
• https://joni.site

Seattle-based embedded firmware engineer with experience in agricultural robotics, satellites, and IoT.

Microcontrollers	Embedded Linux	Electronics
C, Embedded Rust, FreeRTOS, Zephyr	C, Rust, Scripting (Bash, Python)	SWD/JTAG, Logic Analyzer/Oscilloscope
CAN, UART, SPI, I2C, Network	Yocto, Ansible, OpenTofu, Tailscale	Sensors, Motors, Batteries, Cameras
OTA, Security, QEMU, HITL CI/CD	Docker, ROS2, systemd, NVIDIA Jetson	PCB bring-up, Manufacture, Debug

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Bonsai Robotics – Senior Embedded Platform Engineer Mar 2026 – Current

Autonomous electric tractors and other agricultural equipment

• Developed Embedded Linux platform for robotic tractors on NVIDIA Jetson Orin using ROS2, Yocto, and Docker
• Build fleet management system to deploy, configure, and update network-constrained devices with Qbee
• Implemented patches for perception modules to support multiple NVIDIA library versions (TensorRT/CUDA/cuDNN)
• Organized firmware projects, including STM32 J939 CAN bus devices, GMSL cameras, LVGL displays, and GPS
• Collaborated with electrical, mechanical, and manufacturing engineers to integrate complex machinery

Amazon – Embedded Software Engineer Sept 2021 – Dec 2025

Amazon Go / Just Walk Out – MCU Firmware Oct 2024 – Current

• Developed firmware for STM32-based weight sensors, edge networks, cameras, and IoT on Linux and FreeRTOS
• Brought up a new motorized gate, writing firmware in C / C++ and tuning PID parameters for steppers and BLDCs
• Traveled on-site to deploy and validate embedded systems, developing solutions to recurring problems
• Brought up and validated new PCBs for power delivery and USB/I2C/SPI control with FTDI FT4232HQ

Project Kuiper – Satellite Embedded Software Aug 2023 – Oct 2024

• Updated and maintained a framework for modular satellite applications in Rust and C++ on Embedded Linux
• Improved IPC, telemetry, storage, and logging systems, porting key components from C++ to Rust
• Enhanced fault tolerance mechanisms, including health monitoring, watchdogs, and time synchronization
• Provided on-call support during prototype satellite launches and operations

FreeRTOS Maintainer Sept 2021 – Aug 2023

• Developed MISRA-compliant embedded C libraries for FreeRTOS, including OTA updates, HTTP, and cryptography
• Wrote firmware for AWS IoT ExpressLink, implementing OTA, MQTT, and BLE GAP/GATT over UART commands
• Built a HITL CI/CD pipeline for Linux/RPi testbeds, automating Pytest-based MCU integration tests
• Worked with ESP32, Realtek, u-blox, and other vendors for reference integrations of FreeRTOS

Avanade – Software Developer Intern June 2021 – Aug 2021

• Developed interactive AltspaceVR features in Node.js, including virtual games and in-app item systems

Projects

joni-on-micro.site - Microcontroller-Based Web Server Jan 2025

• Built an embedded web server on an ESP32-S3 using LittleFS and esp-httpd to serve a static blog site
• Teardown 2025 hardware conference talk

cedh-decklist-database.com – Web Developer June 2018

• Built a website with an AWS-powered backend for browsing and submitting Magic: The Gathering decklists

Education

University of Washington Bothell – BS Computer Science & Software Engineering Sept 2018 – Aug 2021

• GPA: 3.77 | Courses: Operating Systems, Hardware and Computer Organization, Data Structures and Algorithms
• As a Teaching Assistant for CSE 180: taught data manipulation, visualization, and statistics