Hire the Best Embedded Systems Engineers in California

I am a senior electronics and embedded systems engineer with 47 years of experience in hardware design, firmware development, PCB layout, debugging, testing, and product development. I help clients turn electronic product ideas, prototypes, and hand-wired circuits into working embedded systems and manufacturable PCB designs. Typical projects I can help with include: * ESP32 and STM32 / STMicroelectronics MCU-based products * Power conversion and low-power battery-powered product design * Custom wireless and RF communications, including LoRa and ESP-NOW peer-to-peer networking * Circuit design and component selection for manufacturing * Schematic entry and multi-layer PCB design. * Ordering fabs and coordinating assembled boards. * C/C++ firmware for sensors, displays, audio, wireless, and control systems * Embedded graphics and touchscreen user interfaces using LVGL * Digital audio filtering, FFT spectrum analysis, and voice activity detection * Cloud API integration for speech-to-text, text-to-speech, and language translation * Embedded bus and peripheral interfaces: I2C, SPI, I2S, UART, RS-485, CAN, and SD/MMC * Prototype debugging and board bring-up * Converting breadboard prototypes into clean PCB designs * Design reviews before manufacturing * Analog and digital circuit troubleshooting * Production-oriented improvements for reliability and manufacturability I have founded and managed engineering companies and consulting firms, led technical teams, and helped bring electronic products from initial concept through prototype, testing, manufacturing, and production. For clients, this means fewer design mistakes, faster debugging, lower development risk, and a clearer path from concept to a working, manufacturable product.

With over a decade of experience in the tech industry, both in South Korea and Silicon Valley, I’ve established a reputation for overcoming technical challenges with innovative solutions. My passion for engineering, ignited before high school, drives me to excel in both professional and personal projects. I specialize in hardware and software design, particularly in wearable and portable bio-signal instrumentation, including Brain-Imaging devices utilizing fNIRS, EEG, and Ultrasound for medical and research purposes. What I Can Offer: Project Management & Research: - Expertise in high-level project management and research with a strong foundation in hardware and firmware integration for efficient project execution. - Successfully managed and completed projects for various clients, ensuring timely delivery and high-quality results. Hardware Design: - Proficient in circuit design, component selection, electrical schematics, and PCB layout using Altium Designer. - Deliverables include comprehensive manufacturing files (Gerber files, NC drill, pick and place, assembly diagrams, 3D prints, 3D STEP models, and electrical schematics). - Experienced in analog and digital design, RF, high-speed design, and microcontrollers. - Knowledgeable in various technologies and protocols: SPI, I2C, UART, USB, CAN, RS-485, Ethernet, Bluetooth, WiFi, etc. - Designed hardware for over 20 successful projects, many of which are currently being sold in the market. - Developed wearable and portable bio-signal instrumentation for brain-imaging devices, contributing to advancements in medical and research fields. Prototyping: - Cost-effective prototype manufacturing through established relationships with manufacturers in China, Europe, and the US. - Equipped with extensive tools: multimeters, oscilloscopes, logic analyzers, vector network analyzers, USB protocol analyzers, power supplies, digital electronic loads, and soldering equipment. - Produced high-quality prototypes for clients, leading to successful product launches. Firmware Development: - Over 10 years of coding experience in C/C++ and extensive firmware development. - Proficient in ARM Cortex microcontrollers (STM32, Nordic, Ambiq Apollo), ESP32, Raspberry Pi, Arduino ARM, TI, NXP, Atmel, PIC, FPGA firmware (VHDL, Verilog), and production-quality firmware delivery. - Specialized in ST and Nordic microcontrollers for efficient and quick firmware development. - Developed firmware for a wide range of applications, including medical devices, consumer electronics, and industrial automation. AI/Machine Learning: - Expertise in computer vision and machine learning project architecture/design (Tensorflow, Keras, PyTorch). - Skilled in embedded image processing solutions (Jetson Orin, Raspberry Pi, Intel Movidius, OpenVINO). - Capable of training models for specific purposes, managing dataset collection/preparation, and deploying applications on GCP (Google Cloud Platform) with NVIDIA GPU experience. - Developed and deployed machine learning models for object detection, shape recognition, and action recognition, enhancing product functionality and user experience. Software Development: - Competent in developing software tools for debugging, testing, and manufacturing across Linux/Windows/Mac platforms. - Created user-friendly GUIs and tools to streamline development and testing processes. Wireless Technologies: - Proficient in Bluetooth and BLE-enabled devices, 2.4GHz radio transmitters, and custom analog and digital radio systems. - Developed wireless communication systems for various applications, ensuring reliable and efficient data transmission. Manufacturing Services: - Offering contract manufacturing services to deliver finished products ready for market, ensuring high quality and reliability. - Collaborated with manufacturers to optimize production processes and reduce costs. Professional Integrity: - My rates reflect my extensive experience and knowledge, and I only bill for meaningful project advancement, ensuring transparency and value for my clients. - Committed to delivering high-quality results and providing ongoing support to clients after project completion.

Embedded systems and hardware engineer specializing in firmware development, PCB design, and wireless device development. I help companies design, debug, and bring embedded products to market. My work spans microcontrollers, embedded Linux systems, BLE/Wi-Fi devices, and full hardware/software integration. I have contributed to production devices including medical electronics, wireless products, and embedded sensor systems. Typical work includes: • Embedded firmware development (C/C++) • Embedded Linux development • PCB design and hardware architecture • BLE and wireless device integration • Hardware/software system debugging • Prototyping and product development Technologies I frequently work with include ESP32, STM32, RP2040, Nordic platforms, and Arduino-based systems, along with tools such as FreeRTOS, KiCad, and Python-based test tooling. Languages: C, C++, Python, MATLAB Protocols: I2C, SPI, UART, I2S, BLE, Wi-Fi

I specialize in bringing complex hardware systems to life, from concept to production-ready, and fixing them when they don’t work. I’m a hands-on engineer with 40+ years of experience across embedded systems, avionics, robotics, and industrial controls. I work across the full stack: mixed-signal PCB design (KiCad/Altium), embedded firmware (C/C++/Python), system integration, and real-world debugging. I also handle mechanical design (SolidWorks), rapid prototyping (3D printing, laser cutting), and complete product development from concept through production. I operate a fully equipped home lab with oscilloscopes, logic analyzers, power systems, and prototyping tools—allowing me to quickly diagnose issues, iterate designs, and deliver working solutions. Areas I can help you with: PCB design, bring-up, and debugging Embedded systems (Raspberry Pi, Pico, microcontrollers) Robotics, UAV/UUV systems, autopilots (Cube Orange, MAVLink, QGC, BlueOS) Sensor integration (IMU, pressure, ADC, cameras, temperature, proximity) Power systems and custom Li-Ion battery packs Industrial systems (PLCs, control panels, wiring harnesses) EMI/EMC, grounding, and reliability issues IoT systems, AI-assisted applications, and custom hardware/software solutions Many clients come to me when something isn’t working—hardware failures, unstable systems, communication issues, or integration challenges. I focus on quickly identifying root causes and delivering practical, reliable solutions. If you need someone who can take ownership, move fast, and get systems working in the real world, I’d be happy to help. Typical rate: $100–$150/hr, depending on project complexity Availability: Immediate

Working with cloud based serverless systems, writing firmware, designing pcbs, developing web apps, coding in python and others (c,c++,flutter/dart,php,html5,java,javascript,sql,nosql,etc.), providing exceptional service, and maintaining attention to detail. Desktop: Linux focused but can provide code for other platforms. (and flutter apps) Backend: AWS focused, lambda, api gateway, dynamodb, cognito Hardware: circuit design, pcb design, PCBA Firmware: work with various MCU's, familiar with multiple frameworks,sdk's,idk's Mobile: Android native and flutter development MCU's: esp32, nRF52, nRF53, nRF91, smt32, rp2040, + others (TI, Microchip) IoT hardware and firmware design: 4g, BLE, WiFi, Lora, GPS, Matter, Mesh

Welcome to My Profile! Are you searching for a seasoned Product Design and Engineering Consultant with proven success and extensive experience across all fields of engineering, including time at prestigious organizations like Maxar Technologies? You've come to the right place! I am Adrien Carrou, a dedicated professional passionate about pushing the boundaries of innovation and excellence in product design and engineering. Who Am I? My name is Adrien Carrou, and I am deeply committed to the field of product design and engineering. My expertise is built on a robust foundation across multiple engineering disciplines, including embedded systems, electrical, software, firmware, and mechanical engineering. With extensive hands-on experience in research & development, prototyping, testing, and post-launch support, I am well-versed in every phase of product lifecycle management. My technical proficiency extends to advanced programming in C/C++ and Python, as well as full-stack development with technologies like React for frontend and various backend frameworks. I deliver a comprehensive array of services designed to meet and exceed your project requirements, ensuring innovation and excellence in every project I undertake. What Do I Offer? Research & Development: Competitive analysis and reverse engineering. Product Design: From concept design to design for manufacturing, PCB layout, and circuit design. Engineering: Specializing in electrical, software, and mechanical disciplines. Prototyping: Expertise in rapid prototyping techniques. Testing: Comprehensive testing across mechanical, electrical, and software domains. Post-Launch Support: Ongoing product revisions and enhancements. Why Choose Me? Proven Track Record: My extensive history with top-tier organizations and successful product launches demonstrates my capability to deliver exceptional outcomes. Advanced Tools and Technologies: I am proficient in utilizing a wide array of industry-leading software and programming languages that equip me to handle diverse and complex projects. My toolkit includes engineering design software like SolidWorks, simulation tools such as COMSOL and ANSYS, as well as comprehensive development skills in C/C++, Python, and full-stack technologies including React for frontend development and various backend frameworks. Combined with an advanced electronics prototyping setup and high-end 3D printing capabilities, I am ready to tackle projects of any scale or complexity. All-Inclusive Services: I offer end-to-end solutions from concept to product launch, tailored to your unique needs, all under a transparent, flat-rate hourly billing structure. Let's Work Together! Whether you're a startup eager to turn your vision into reality or a corporation aiming to expand your product line, I invite you to collaborate with me. Together, we can transform your ideas into successful products, ready to conquer the market. Reach out today to discuss how we can partner to foster innovation and ensure your project's success!