Kaito O.
Firmware & Embedded Systems Engineer | PCB Design | IoT Solutions
Los Angeles,
United States
Global rank:
16,895
/
137,214
Skill pts: 5
About
I am an embedded systems engineer specializing in firmware development and hardware integration for IoT and microcontroller-based systems.
I have experience working with ESP32, STM32, and AVR (ATmega) platforms, developing reliable firmware for real-time and low-power applications.
I focus on building practical embedded solutions including sensor integration, communication protocols (UART, I2C, SPI, MQTT), and system debugging.
I also work with PCB design and hardware prototyping, ensuring smooth integration between firmware and circuit design.
My goal is to deliver clean, efficient, and maintainable embedded solutions that meet real-world product requirements.
⚡Skills & Expertise⚡
- Microcontrollers: ARM (STM32, NXP), AVR, PIC, ESP32, Arduino, Raspberry Pi
- Programming Languages: C, C++, Embedded C, Python (for prototyping/testing)
- RTOS & Firmware: FreeRTOS, Zephyr, Bare-Metal, HAL/LL Drivers
- Connectivity: Bluetooth (BLE), Wi-Fi, LoRa, Zigbee, MQTT, Modbus
- Protocols: SPI, I2C, UART, CAN, USB, RS-485
- PCB Design: Altium Designer, KiCad, Eagle
- Debugging Tools: JTAG, SWD, Logic Analyzers, Oscilloscopes
- Simulation & Modeling: MATLAB/Simulink (if applicable)
⚡Services I Offer⚡
- Firmware development from scratch or modification
- Embedded system prototyping and product design
- Driver development for sensors, displays, and communication modules
- IoT solutions: Edge device programming + Cloud integration
- PCB design and hardware validation
- Optimization of power, memory, and processing usage
- Debugging and troubleshooting hardware/software issues
⚡Why Hire Me?⚡
- Timely Delivery
- Clean, well-documented code
- Long-term support and maintenance
- Open communication & flexibility
- End-to-end embedded product support
I’d love to hear about your project. Whether you're building from scratch or improving an existing system, I can help bring your ideas to life.
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I have experience working with ESP32, STM32, and AVR (ATmega) platforms, developing reliable firmware for real-time and low-power applications.
I focus on building practical embedded solutions including sensor integration, communication protocols (UART, I2C, SPI, MQTT), and system debugging.
I also work with PCB design and hardware prototyping, ensuring smooth integration between firmware and circuit design.
My goal is to deliver clean, efficient, and maintainable embedded solutions that meet real-world product requirements.
⚡Skills & Expertise⚡
- Microcontrollers: ARM (STM32, NXP), AVR, PIC, ESP32, Arduino, Raspberry Pi
- Programming Languages: C, C++, Embedded C, Python (for prototyping/testing)
- RTOS & Firmware: FreeRTOS, Zephyr, Bare-Metal, HAL/LL Drivers
- Connectivity: Bluetooth (BLE), Wi-Fi, LoRa, Zigbee, MQTT, Modbus
- Protocols: SPI, I2C, UART, CAN, USB, RS-485
- PCB Design: Altium Designer, KiCad, Eagle
- Debugging Tools: JTAG, SWD, Logic Analyzers, Oscilloscopes
- Simulation & Modeling: MATLAB/Simulink (if applicable)
⚡Services I Offer⚡
- Firmware development from scratch or modification
- Embedded system prototyping and product design
- Driver development for sensors, displays, and communication modules
- IoT solutions: Edge device programming + Cloud integration
- PCB design and hardware validation
- Optimization of power, memory, and processing usage
- Debugging and troubleshooting hardware/software issues
⚡Why Hire Me?⚡
- Timely Delivery
- Clean, well-documented code
- Long-term support and maintenance
- Open communication & flexibility
- End-to-end embedded product support
I’d love to hear about your project. Whether you're building from scratch or improving an existing system, I can help bring your ideas to life.
Experience
-
Embedded Systems Engineer
BeeBeans Technologies Co., Ltd. · Contract
Mar 2023 –
Apr 2026
3 yrs 1 mos
Tokyo, Japan
・Developed firmware for STM32 and ESP32-based embedded devices using C/C++.
・Implemented peripheral drivers for UART, SPI, I2C, ADC, PWM, and GPIO.
・Integrated sensors and communication modules for industrial IoT applications.
・Performed firmware debugging, hardware validation, and performance optimization.
・Collaborated with hardware engineers during PCB bring-up and system testing. -
Firmware Engineer
Next System Co., Ltd. · Full-time
Oct 2021 –
Feb 2023
1 yrs 4 mos
Osaka, Osaka, Japan
・Designed and maintained firmware for microcontroller-based control systems.
・Developed real-time applications using FreeRTOS.
・Integrated Bluetooth and Wi-Fi communication for IoT devices.
・Optimized embedded software for memory usage and low-power operation.
・Assisted with prototype development and functional testing. -
Embedded Software Engineer
A-SYSTEM Co., Ltd. · Full-time
Jun 2018 –
Sep 2021
3 yrs 3 mos
Nagoya, Aichi, Japan
・Developed embedded applications for ARM Cortex-M microcontrollers.
・Created device drivers and communication interfaces for peripheral modules.
・Supported PCB verification, hardware debugging, and firmware integration.
・Prepared technical documentation and test procedures.
Worked closely with cross-functional teams to deliver reliable embedded solutions.
Education
-
Chiba Institute of Technology
Bachelor of Engineering, Electrical and Electronic Engineering
2014 – 2018
Activities and Societies:
Electronics Club, Embedded Systems Laboratory, Robotics Club
Studied embedded systems, microcontroller programming, digital and analog electronics, circuit design, and control systems.
Completed coursework in C/C++ programming, real-time embedded software, PCB design, signal processing, and communication systems. Participated in hands-on laboratory projects involving STM32 and Arduino microcontrollers, sensor interfacing, and hardware prototyping.
Gained practical experience in schematic design, PCB layout, firmware debugging, and embedded system integration through academic and personal projects.
Other experience
-
PCB design practice using tools like KiCad / Altium / Eagle
Practiced PCB design using KiCad, Altium Designer, and Eagle, including schematic design, component selection, PCB layout, and routing.
Worked on designing compact and efficient circuits for microcontroller-based systems with proper grounding, power distribution, and signal integrity considerations.
Gained experience in preparing manufacturing-ready files such as Gerber outputs and understanding real-world hardware constraints. -
IoT prototype development with cloud integration
Built IoT prototype systems that collect sensor data and transmit it to cloud platforms for monitoring and analysis.
Implemented wireless communication using ESP32 with protocols such as MQTT and HTTP for real-time data exchange.
Integrated cloud services for data storage and visualization, enabling remote access and monitoring of embedded devices.
Focused on system reliability, low-power operation, and efficient data handling. -
Personal embedded projects using STM32 and Arduino platforms
Developed multiple hands-on embedded systems projects using STM32 and Arduino boards, focusing on real-time control, sensor interfacing, and low-level firmware development.
These projects include tasks such as GPIO control, ADC data acquisition, PWM signal generation, and peripheral communication using UART, I2C, and SPI protocols.
The goal of these projects was to strengthen firmware development skills and understand microcontroller architecture through practical implementation.
Stats
0 followers, 0 following
Joined: June 27, 2026
Last seen: June 29, 2026
Area of Expertise
Languages
English Full professional proficiency
Japanese Native or bilingual proficiency
Location
Los Angeles, CA, United States