RTOS Programmersพร้อมรับจ้าง
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freelancer ที่ได้รับการสนับสนุน
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Zephyr RTOS contributor and Technical Product Manager with 2 years of product management experience and 9+ years of hands-on technical expertise in IoT, embedded systems, and smart home technologies. Proven ability to bridge engineering and business needs, leading cross- functional teams to deliver...Zephyr RTOS contributor and Technical Product Manager with 2 years of product management experience and 9+ years of hands-on technical expertise in IoT, embedded systems, and smart home technologies. Proven ability to bridge engineering and business needs, leading cross- functional teams to deliver scalable hardware/software solutions. Deep knowledge of wireless protocols (BLE, Zigbee, LoRa, Matter) and agile product development. ย่อ
ว่าจ้าง molinary20
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🔧 Electrical & Electronics Engineer | Embedded Systems | Power & Control | IoT | PLC | RF & Antenna I help companies/individuals design, develop, and deploy robust electrical and embedded solutions—from PCB design and firmware development to power systems, IoT integration, and compliance-ready documentation. With 8+...🔧 Electrical & Electronics Engineer | Embedded Systems | Power & Control | IoT | PLC | RF & Antenna I help companies/individuals design, develop, and deploy robust electrical and embedded solutions—from PCB design and firmware development to power systems, IoT integration, and compliance-ready documentation. With 8+ years of experience in electronics engineering and embedded systems, I bring deep technical expertise and a hands-on approach to every project. ✅ Core Services PCB Design & Circuit Development Schematic capture, multi-layer PCB layout, signal integrity, and manufacturing-ready Gerber files. Tools: Altium, KiCad, Eagle, EasyEDA. Embedded Systems & Firmware Custom firmware for STM32, ESP32, Arduino, and ARM Cortex-based boards. RTOS, interrupt handling, I2C/SPI/UART/ADC, BLE & Wi-Fi protocols. Power Electronics & Battery Management DC-DC converters, BMS (Battery Management Systems), inverter designs, and charger integration for Li-ion, LFP, and solar-powered systems. IoT & Wireless Solutions Sensor-based systems with real-time wireless data transmission via LoRa, BLE, Wi-Fi, and GSM. Cloud integrations with MQTT, Firebase, and REST APIs. RF circuit design for BLE, LoRa, Wi-Fi, GSM, ISM band devices Custom antennas (patch, dipole, monopole, fractal) Matching networks, impedance tuning, VNA testing, EMI/EMC compliance Automation & Control Systems Custom control panels, PLC alternatives, smart switching circuits, motor drivers, and analog/digital feedback control loops. Simulation & Analysis Circuit simulation (LTspice, PSpice), power analysis, EMI/EMC considerations, and thermal management. 🧰 Tech Toolbox Design Tools: Altium Designer, KiCad, Eagle, OrCAD, EasyEDA Simulation & Modeling: LTspice, PSpice, MATLAB/Simulink Microcontrollers: STM32, ESP32, AVR, TI MSP430, Arduino Communication Protocols: BLE, Wi-Fi, LoRa, MQTT, Modbus, RS232, I2C, SPI, UART, UDP Programming Languages: C, C++, Embedded C, MicroPython Testing & Measurement: Oscilloscope, Logic Analyzer, Multimeter, Signal Generator Standards & Compliance: DFM, EMI/EMC Best Practices, ISO/IEC Specifications I will be happy to help translate your ideas into reality. ย่อ
ว่าจ้าง oleksandrt68
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⭐️⭐️⭐️⭐️⭐️ Embedded Systems Engineer with over 4 years of industry experience delivering complete, production-ready solutions in hardware design, firmware development, and product integration. As a freelance engineer, I’ve collaborated with startups and established companies to bring over 20 products to market...⭐️⭐️⭐️⭐️⭐️ Embedded Systems Engineer with over 4 years of industry experience delivering complete, production-ready solutions in hardware design, firmware development, and product integration. As a freelance engineer, I’ve collaborated with startups and established companies to bring over 20 products to market across the consumer, industrial, and medical sectors. I work across the full product lifecycle — from early specification and prototyping to manufacturing support and field testing. My expertise spans custom PCB design, RTOS-based and bare-metal firmware, and embedded Linux systems, using technologies like Altium, STM32, nRF52, ESP32, FreeRTOS, Zephyr, and more. I also support clients with architecture decisions, hardware/firmware co-design, and design optimization for cost, manufacturability, and reliability. Relevant Skills: ● Hardware design and PCB development (Expert) - Custom PCB design: Rigid, Flex and Rigid-flex technologies. - EDA tools: Altium Designer, OrCAD and KiCAD. - System-level design and project planning. - Schematic capture and library management. - Multilayer layout design following IPC and industry best practices. - High-speed digital, mixed-signal, RF/wireless, and power electronics design. - Interfaces: DDR, LVDS, HDMI, SATA, USB, Ethernet. - Circuitry: DC-DC converters, MCU/MPU/SoCs, ADCs/DACs, sensors, etc. - Familiar with PCBA manufacturing/assembly requirements and DFM/DFT rules. ● MCU Firmware programming (Advanced) - Languages: C, C++, Rust, ARM Assembly. - IDEs and tooling: Eclipse-based, VSCode, bare-metal toolchains, Make/CMake. - Firmware architectures: Bare-metal, RTOS, HAL/LL APIs. - RTOS: FreeRTOS, Zephyr (hands-on experience). - Ecosystems: STM32 (HAL/LL), Espressif (ESP-IDF), Nordic (nRF SDKs). - Version control: Git and SVN. - Familiarity with MISRA C/C++ standards - Architectures: ARM Cortex-M/R, Xtensa (ESP32). - Driver development: I2C, SPI, UART, ADC, PWM, external ASICs. - Protocols & stacks: BLE, LoRaWAN, HTTPS, MQTT. ● Embedded Linux development (Intermediate) - Linux for custom hardware platforms (MPUs). - Yocto Project: Linux distribution configuration and build. - Device tree and kernel driver development (sensors, ASICs, etc.).- Application development in C, C++, Python, Rust. - ARM Cortex-A architecture familiarity. ● FPGA & HDL Development (Intermediate) - FPGA/SoC development using Verilog, SystemVerilog, and VHDL. - Platforms: Xilinx Spartan-7, Zynq-7000; Intel (Altera) Cyclone, MAX series. - Custom IP design and hardware/software integration. - Familiarity with AXI/AMBA bus architectures. If you’re interested in working with me, I’m available via Freelancer and will always answer your questions or requests promptly. Thank you for your time and have a great day. ย่อ
ว่าจ้าง cmsivolella
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Versatile Electronics Engineer and experienced Firmware Developer with a focus on embedded systems integration and hardware design. Proven track record in the complete product development lifecycle, from electronic circuit design and production to robust firmware engineering. Proficient in robotics simulation using...Versatile Electronics Engineer and experienced Firmware Developer with a focus on embedded systems integration and hardware design. Proven track record in the complete product development lifecycle, from electronic circuit design and production to robust firmware engineering. Proficient in robotics simulation using ROS2, Gazebo, and Isaac Sim. Technical expertise includes C/C++, Python, and real-time operating systems on ESP32, STM32, and Raspberry Pi platforms ย่อ
ว่าจ้าง yesidcamiloa
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Arduino, อิเล็กทรอนิกส์, ไมโครคอนโทรลเลอร์, การเขียนโปรแกรม C, อินเทอร์เฟซอุปกรณ์ต่อพ่วงแบบอนุกรม (SPI)Professional Embedded System Engineer with 10 years of experience on hardware and embedded software development. PCB Tools : - Altium - KiCAD - Eagle - EasyEDA Microcontroller : - AVR - STM32 - ESP8266 / ESP32 - NXP - Texas Instrument - Arduino - Raspberry / Banana / Orange Pi SBC Wireless Communication - NFC...Professional Embedded System Engineer with 10 years of experience on hardware and embedded software development. PCB Tools : - Altium - KiCAD - Eagle - EasyEDA Microcontroller : - AVR - STM32 - ESP8266 / ESP32 - NXP - Texas Instrument - Arduino - Raspberry / Banana / Orange Pi SBC Wireless Communication - NFC (MF classic, desfire, ultralight, NTAG424, NTAG213, NTAG21x, ICODE) implemented on payment, membership, access control with various NFC reader on desktop such as ACR122U, ACR120U, castle tech QP8000 to android custom reader - RFID short / long range - WiFi, Bluetooth, LoRa Wired Communication - UART, SPI, I2C, CAN, LIN, RS232, RS485 Protocol Data - MODBUS RTU / ASCII - HTTP, MQTT, TCP, UDP ย่อ
ว่าจ้าง edi45
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I design and de-risk embedded control systems for hardware startups and product teams, taking ideas from early concept to working, production-ready prototypes. My work focuses on system architecture, hardware reliability, and firmware integration, helping teams avoid costly redesigns and integration failures common...I design and de-risk embedded control systems for hardware startups and product teams, taking ideas from early concept to working, production-ready prototypes. My work focuses on system architecture, hardware reliability, and firmware integration, helping teams avoid costly redesigns and integration failures common in early hardware development. I typically support clients with: • Embedded system architecture and feasibility analysis • Custom PCB design with a strong focus on power, safety, and manufacturability • Firmware development and bring-up for STM32, ESP32, and AVR-based systems • Hardware–firmware integration and prototype validation I have worked on products spanning industrial electronics, robotics, agriculture, and connected devices, often with founders or teams building hardware for the first time. I prefer projects where: • Requirements are clear or can be structured early • Technical decisions matter long-term • Quality and reliability are more important than quick fixes If you are building a hardware product and want it engineered correctly from the start, I’m happy to discuss how to reduce risk and move efficiently toward a working prototype. ย่อ
ว่าจ้าง jimsufficiency
