Radio Frequency Engineers Para Contratação
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Exames
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Mostrando 6 resultados
Freelancers Patrocinados
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I am a dedicated Electronic Hardware and Firmware Engineer with over 15 years of experience in electronic engineering. My expertise encompasses designing and developing complex PCB layouts, embedded systems, and IoT solutions tailored to client needs. Throughout my career, I've led projects from concept to production,...I am a dedicated Electronic Hardware and Firmware Engineer with over 15 years of experience in electronic engineering. My expertise encompasses designing and developing complex PCB layouts, embedded systems, and IoT solutions tailored to client needs. Throughout my career, I've led projects from concept to production, ensuring compliance with industry standards and delivering high-quality, reliable products. My approach combines technical proficiency with clear communication, ensuring that clients are informed and involved at every stage. Technical Skills: -PCB Design: Altium Designer, KiCAD, Eagle -Embedded Systems: ARM Cortex, STM32, AVR, ESP32 -Programming Languages: C/C++, Python -Communication Protocols: I2C, SPI, UART, CAN, Ethernet -IoT Platforms: AWS IoT, Azure IoT Hub, MQTT -Simulation Tools: LTspice, MATLAB/Simulink Industries Served: -Consumer Electronics -Automotive -Medical Devices -Industrial Automation -Aerospace I am committed to delivering solutions that meet and exceed client expectations. Let's collaborate to bring your electronic projects to life with precision and efficiency. menos
Contratar tetianam8
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I am an RF and electronics design engineer from Ukraine with strong experience in antenna design, RF PCB layout, and general electronic hardware development. I focus on practical, manufacturable designs with predictable performance. Core expertise: - RF PCB layout (impedance control, grounding, isolation, EMI...I am an RF and electronics design engineer from Ukraine with strong experience in antenna design, RF PCB layout, and general electronic hardware development. I focus on practical, manufacturable designs with predictable performance. Core expertise: - RF PCB layout (impedance control, grounding, isolation, EMI reduction) - High-speed and mixed-signal PCB design (impedance and length matching) - Schematic & PCB layout and BOM for production-ready hardware - Power supply and filtering design - Antenna design and tuning (GNSS, Wi-Fi, ISM bands...) Typical work: - Wi-Fi, BLE, LoRa, and custom RF hardware - Compact and embedded antennas - Multilayer PCBs optimized for performance and cost - Design review, layout correction, and RF/EMI troubleshooting Tools: - RF design and simulation tools (ADS, CST, and HFSS) - PCB design tools (Altium, KiCAD, OrCAD, PADS, and EasyEDA) - Others (NI Multisim, Proteus, Matlab...) Thanks for visiting my profile. menos
Contratar leonidye
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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. menos
Contratar cmsivolella
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I am an electronic engineer (Master's Degree) with over ten years of experience in designing power electronic systems and embedded systems. I worked for important Italian companies as a Hardware Designer, as you can see on my Linkedin profile https://www.linkedin.com/in/manuel-chiumarulo-2048083a. I have also...I am an electronic engineer (Master's Degree) with over ten years of experience in designing power electronic systems and embedded systems. I worked for important Italian companies as a Hardware Designer, as you can see on my Linkedin profile https://www.linkedin.com/in/manuel-chiumarulo-2048083a. I have also experienced with schematic, layout, and simulation of electronic circuits with KiCAD, OrCAD, ALTIUM, and PROTEUS. Generally, I route boards up to 8 layers with a CPU unit onboard that controls signal actuation, receives signals from sensors, and communicates with different peripherals. We are talking about boards ranging from 50 to 200 components both SMD and PTH, and connectors of various types. I have experience in programming on STM32 and ARDUINO, ESP32 platforms, and smart displays. I have been dealing with communication protocols such as I2C, UART, SPI, RS232, USB, etc. I have experience in MATLAB and MATHEMATICA programming. I worked in pack battery development, fuel gauge fine-tuning, and wireless charger station for embedded portable devices. I worked on developing a wireless charger platform for handheld devices up to 50 Watts ( inductive and resonance coupling). I have experience in RAMS Analysis (FMEA, DFMEA, PHA, FTA, LCC, etc) in the railway and automotive field. Experience in Montecarlo simulations and WCA electronic circuits. Experience with MATLAB, Simulink, and Mathematica. Experience in drafting technical and scientific documentation. I am a co-author of 4 scientific publications. menos
Contratar ManuelChiumarulo
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I have a PhD in RF engineering from a German university, over 10 years of experience as a full-time researcher and more than 7 years in the automotive industry (radar).I have a PhD in RF engineering from a German university, over 10 years of experience as a full-time researcher and more than 7 years in the automotive industry (radar). menos
Contratar RFmmW
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InternetOfThings InternetOfThings
$50 Dólares / hora
Certified IoT and LoRaWAN SpecialistPhilippinesHi, I’m Stephen 👋 An experienced IoT engineer who turns complex ideas into reliable, real-world systems. I help businesses design, build, and scale Internet of Things solutions by combining deep hardware knowledge with production-ready software engineering. With 28 years in the telecommunications industry, I’ve...Hi, I’m Stephen 👋 An experienced IoT engineer who turns complex ideas into reliable, real-world systems. I help businesses design, build, and scale Internet of Things solutions by combining deep hardware knowledge with production-ready software engineering. With 28 years in the telecommunications industry, I’ve spent my career solving difficult integration, automation, and connectivity problems — the kind that don’t come with ready-made answers. My work has been recognized for innovation, and today I apply that experience to modern IoT, edge, and cloud-connected systems. Whether you’re building a prototype, stabilizing firmware, or scaling a deployed product, my focus is always on solutions that work outside the lab. 🔌 Connectivity & IoT Protocols 📡 LoRa and LoRaWAN solutions (LoRa and TTN certified) 📶 Cellular IoT: LTE-M, NB-IoT, LTE, 4G, 3G, 2G, GSM, GPRS 🔁 Protocols: MQTT, CoAP, REST, XMPP, Kafka, Google Cloud Messaging 🧠 Embedded & Firmware Development 🔧 Microcontrollers: ESP32, Arduino, STM32, RP2040 (Raspberry Pi Pico), Nordic RF, ATMEL, Microchip ⚙️ RTOS and OS: FreeRTOS, Zephyr, Embedded Linux 🧩 Firmware development in C/C++ using Arduino IDE or PlatformIO 🪛 Low-level device drivers and Linux kernel development 🤖 Automation & Edge Computing 🔗 n8n, Node-RED, Home Assistant, openHAB, IFTTT, Google Home 📦 Edge computing with Docker and balenaOS 🛠️ Infrastructure automation using Ansible, Terraform, or custom tooling ☁️ Cloud, APIs & Backend Systems 🧩 Full-stack development with Python, PHP (Laravel), and Nuxt 🔐 API design and development across 13+ programming languages 🌐 API gateways: Apigee (certified), Mulesoft, Kong ⚡ Serverless and microservices using AWS Lambda and Google Cloud Functions 📊 Data, Monitoring & Visualization 📈 Grafana, Prometheus, Datadog 🗂️ IoT platforms including ThingsBoard and DataCake 🧩 Hardware Design 📐 Schematic and PCB design using KiCad, Eagle, Altium, and OrCAD 🔍 Hardware bring-up, debugging, and power optimization 🧠 How I Work I take a system-level approach to every project, considering power, connectivity, firmware, cloud infrastructure, and long-term reliability from day one. My experience comes from real deployments, late-night debugging sessions, and production systems that had to work — not just demos. I’m instinctively drawn to interesting and unconventional challenges, especially where out-of-the-box thinking makes the difference. 🚀 Let’s Work Together If you have a tough IoT problem or a project that needs an experienced hand, I’m happy to review your requirements, suggest an approach, or help rescue a project that’s gone off the rails. menos
Contratar InternetOfThings
