Radio Frequency Engineers Para Contratação
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Mostrando 11 resultados
Freelancers Patrocinados
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Projeto de Antenas, Gestão de Equipamentos de Estação Base, Frequencia de Radio, Testes de Chamadas em RAN, Engenharia de Telecomunicacoes7 ans d'expérience dans le domaine de l'ingénierie des réseaux GSM / UMTS / LTE, y compris l'analyse et le suivi quotidien des KPI à l'aide des outils Nemo Nemo Analyze, TEMS Discovery, et Actix Analyzer. Expert en dimensionnement et amélioration des performances avec plusieurs opérateurs7 ans d'expérience dans le domaine de l'ingénierie des réseaux GSM / UMTS / LTE, y compris l'analyse et le suivi quotidien des KPI à l'aide des outils Nemo Nemo Analyze, TEMS Discovery, et Actix Analyzer. Expert en dimensionnement et amélioration des performances avec plusieurs opérateurs menos
Contratar saadanifares
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oleksandrt68 oleksandrt68
$45 Dólares / hora
Electronics | Embedded Systems | IoT | RF&AntennaUkraine🔧 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. menos
Contratar oleksandrt68
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Hello, I am Joaquin, a Professional Electronics and Electrical Engineer with strong hands-on experience in PCB design, embedded systems, IoT, and firmware development. I am specialized in RF & antenna design, wireless communication systems, and power electronics, including DC-DC converters and power management...Hello, I am Joaquin, a Professional Electronics and Electrical Engineer with strong hands-on experience in PCB design, embedded systems, IoT, and firmware development. I am specialized in RF & antenna design, wireless communication systems, and power electronics, including DC-DC converters and power management circuits. I also have experience in mechanical design and CAD modeling, including enclosures, thermal management, and integration of electronic systems into mechanical structures. I have a proven ability to take products from concept and schematic through PCB layout, firmware integration, prototyping, testing, mechanical integration, and production support. I am experienced in working with multidisciplinary teams and delivering reliable, manufacturable designs for commercial and industrial applications. menos
Contratar joaquinc48
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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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Projeto de Antenas, Bluetooth de Baixa Energia (BLE), Design de Circuito , Engenharia de Controle, Engenharia ElétricaI have extensive experience delivering end-to-end engineering solutions across IoT, embedded systems, firmware, and applied electronics. I design, architect, and deliver production-ready systems spanning hardware, firmware, control software, cloud infrastructure, web dashboards, and mobile applications. My...I have extensive experience delivering end-to-end engineering solutions across IoT, embedded systems, firmware, and applied electronics. I design, architect, and deliver production-ready systems spanning hardware, firmware, control software, cloud infrastructure, web dashboards, and mobile applications. My engineering services include firmware and embedded software development, embedded Linux systems, power electronics and control engineering, RF and antenna-aware device integration, PCB design and review, PLC-based industrial automation, and drone and robotics systems. I routinely handle hardware bring-up, driver development, communication protocols, and system-level integration, ensuring performance, reliability, and regulatory awareness from early design through deployment. I work through detailed technical planning, clearly defined architectures, and structured execution. My approach emphasizes engineering accuracy, traceable requirements, test coverage, and maintainable design. I deliver clean, well-tested code, comprehensive documentation, and clear build, deployment, and validation procedures. Clients receive regular technical updates, concise demonstrations, and thorough handover materials to support long-term operation and scaling. menos
Contratar rocios46
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I am a former assistant professor in Turkey. I worked 20 years as a lecturer, giving courses about analog and digital communications, analog and digital electronic circuits, electromagnetic waves, antennas, RF/microwave circuits, C/C++ and MATLAB, neural networks, artificial intelligence, on-grid and off-grid solar...I am a former assistant professor in Turkey. I worked 20 years as a lecturer, giving courses about analog and digital communications, analog and digital electronic circuits, electromagnetic waves, antennas, RF/microwave circuits, C/C++ and MATLAB, neural networks, artificial intelligence, on-grid and off-grid solar energy systems, etc. I am an entrepreneur and have a firm about agricultural electronics and machinery. I am interested in software and hardware. I have more than 55 papers and 330 citations. I had supervisory experience on PhD and MSc of ECE. menos
Contratar mfcaglar
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As an embedded software and hardware engineer, I am responsible for designing and developing software and hardware solutions for embedded systems. -Designing and developing software for embedded systems: I write code on microcontrollers, processors, and other embedded devices. This includes low-level programming,...As an embedded software and hardware engineer, I am responsible for designing and developing software and hardware solutions for embedded systems. -Designing and developing software for embedded systems: I write code on microcontrollers, processors, and other embedded devices. This includes low-level programming, driver development, and firmware development. -Designing and developing hardware for embedded systems: I design electronic circuits, choose components, and create schematics for the hardware components of embedded systems. This includes PCB layout, debugging, and testing. -Integrating software and hardware components: I work to ensure that the software and hardware components of embedded systems are properly integrated and work together seamlessly. -Debugging and testing: l use tools such as oscilloscopes, logic analyzers, and debuggers to diagnose and fix issues with embedded systems. -Documentation: I create documentation for the software and hardware components of embedded systems, including design specifications, test plans, and user manuals. -Collaboration: I work closely with other engineers and teams, including hardware engineers, software engineers, and quality assurance teams, to ensure that embedded systems meet project goals and timelines. As an embedded software and hardware engineer, I play a critical role in developing and delivering reliable and high-performance embedded systems that meet the needs of customers and end-users. menos
Contratar faytek
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michihochuli michihochuli
$85 Dólares / hora
IT Techniker | M365, Webhosting, VoiP, NetworkSwitzerlandSkills: IT, Network, Networkadministration, Firewall, UCC, Hosted PBX, 3CX, VoIP, Webhosting, Wordpress, Website-Administration, M365 Administration, Public or Private Cloud Services including Virtual Desktop, MDM Language: German (native), English, French Normal Business Hours: 9h-22h (GMT+2)Skills: IT, Network, Networkadministration, Firewall, UCC, Hosted PBX, 3CX, VoIP, Webhosting, Wordpress, Website-Administration, M365 Administration, Public or Private Cloud Services including Virtual Desktop, MDM Language: German (native), English, French Normal Business Hours: 9h-22h (GMT+2) menos
Contratar michihochuli
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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
