Hire the best GSM developers

Check out GSM developers with the skills you need for your next job.
  • $30 hourly
    🔹 Welcome to My Profile! 🔹 Are you seeking a seasoned Embedded Systems Engineer with a track record of successfully bringing startup projects to production? Look no further! With over six years of hands-on experience in the field, I specialize in turning innovative ideas into fully functional embedded solutions. My expertise spans across a wide range of industries, including IoT, automotive, consumer electronics, and more. 🛠️ What I Offer: ✅ Embedded Systems Development: From concept to deployment, I excel in designing and implementing embedded systems tailored to your specific requirements. Whether it's firmware development, hardware integration, or system optimization, I ensure top-notch performance and reliability. ✅ IoT Solutions: Harnessing the power of interconnected devices, I create robust IoT solutions that enable seamless communication and data exchange. From sensor integration to cloud connectivity, I deliver end-to-end solutions that drive business innovation. ✅ Startup Project Expertise: Having spearheaded numerous startup projects, I understand the unique challenges and tight deadlines associated with bringing a product to market. My proven ability to navigate these obstacles ensures timely delivery without compromising quality. ✅ Prototyping and Testing: With a keen eye for detail, I meticulously prototype and test embedded systems to validate functionality and performance. Through rigorous testing methodologies, I identify and address any potential issues before they impact your project. Expertise: - Electronics Circuit Design - PCB design - Firmware Development using C, C++ and Python - Internet of Things (IoT) - Automation - Embedded Linux Software: - Autodesk Eagle - KiCAD - EasyEDA - Altium Designer Hardware: - Arduino - ESP32 - STM32 - ESP8266 - nRF52840 - Raspberry pi - AVR Microcontrollers - Beaglebone Black Firmware Development Tools: - Arduino IDE - Platform IO - STM32 Cube IDE - Espressif IDF - Nordic Semiconductor's nRF Connect Wireless Protocols: - Wi-Fi - Bluetooth Low Energy (BLE) - GSM - Zigbee - HTTP - MQTT
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Bluetooth LE
    Python
    STM32
    Internet of Things Solutions Design
    LoRa
    Embedded System
    GSM
    Electronic Circuit Design
    PCB Design
    Internet of Things
    Raspberry Pi
    ESP32
    C++
    Microcontroller Programming
  • $40 hourly
    I'm a seasoned robotics and embedded systems specialist with over 8 years of experience architecting autonomous systems and IoT solutions. As a top-rated Upwork freelancer, I specialize in: Core Expertise: - Complete robotics system development using ROS1/ROS2 - Autonomous vehicle systems (AGV, AUV, UAV, Mobile Robots) - Embedded firmware and device driver development - IoT architecture and sensor integration - Real-time control systems and simulation environments What I Deliver: - Complete Robotics Solutions: ROS1/ROS2 implementations, autonomous navigation systems, sensor fusion integration (GPS, IMU, LiDAR), and simulation environments using Gazebo/CARLA. - Embedded Systems & Firmware: Custom firmware for microcontrollers, device drivers, RTOS implementations, and power-optimized solutions for IoT devices and sensors. - IoT Architecture: End-to-end IoT solutions from sensor integration to cloud connectivity, secure communication protocols, and remote device management systems. - Control & Testing Systems: HIL/SIL testing using IPG and dSpace, advanced control algorithms, real-time performance optimization, and comprehensive validation protocols. - Quality Assurance: Well-documented code, thorough testing reports, detailed technical documentation, and ongoing support through deployment and maintenance. Recent Success Stories: - Developed complete middleware and control systems for an autonomous warehouse cleaning robot for P&G USA - Architected garden automation system using ESP32 for commercial deployment - Implemented autonomous navigation systems for military Humvee project using CARLA simulator - Created underwater vehicle control systems with real-time sensor fusion Technical Stack: - Languages: C, C++, Python, JavaScript, Embedded Programming - Frameworks: ROS1, ROS2, OpenCV, PCL - Simulation: Carla, IPG Truckmaker, dSpace, Gazebo - Hardware: Extensive experience with various embedded boards and microcontrollers - IoT/Cloud: AWS, Firebase, GCP, MongoDB I pride myself on delivering robust, production-ready solutions with clean code and comprehensive documentation. My background in both academic research and commercial product development allows me to tackle complex technical challenges while maintaining practical implementation goals. Whether you need a complete robotics solution, embedded firmware, or IoT system architecture, I offer end-to-end support from concept to deployment. I maintain my own development and testing equipment to ensure rapid prototyping and efficient development cycles.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    GSM
    Sensor
    Embedded Linux
    ESP32
    Robotics
    Embedded System
    Navigation System Design
    Robot Operating System
    Simulation Game
    Driver Development
    Computer Vision
  • $57 hourly
    Good working day! I'm here to provide systems work, live, update, and development. I want all the products I develop see the light of day, sell successfully, and become better for users and owners. If you ask me what is the meaning of life, I'll answer – in programming. So, my job is programming, my hobby too. By the way, if you need a first-class programmer – I'm here. I’ve been providing excellent firmware development services for over 10 years. It confirms my status 100 % TOP rated + on Upwork. Perfectly functioning devices and satisfied customers will speak better for me. Do you want to save your time on pointless meetings where engineers ask you what to do instead of doing it? Do you want to increase your income through our productive cooperation? Do you want a perfect, functioning, advanced product that you and your customers will like? I'll help you find a solution for your problems as soon as possible to implement them at a high level. The main goal is to help you achieve great success and make results. The most important thing is the product. It will be innovative, progressive, fresh, and efficient. I'll develop firmware, support it, and add new features, thus improving the product and the owner's profit. I'm always open to communication and find it useful. The more feedback I receive from you, the more I'll give you in return. Then I would like to tell you exactly how the cooperation goes. And now you can look at reviews of my work left by my clients on Upwork. I want you to understand the most important benefits that I can provide you are time and freedom. I can independently make decisions without disturbing the customer. You can go about your business while your project is running. At the same time, I work on technical tasks and take responsibility for my actions. So, I offer long-term cooperation which means the full cycle of device development and support. Please note that the latest versions are released as soon as new features are added. Every next release brings us closer to the final version of the device. Eventually, I would like to give you a guarantee. Guarantee of 100% satisfaction with the result. Unfortunately, my resources are limited, so I don't take on many projects. If you have a clear understanding and vision of your project and want to start right now, just write to me. Let's talk, discuss, make a plan and grow your business. If you still have doubts about something, then I have a consultation service – where we’ll analyze all the issues together that will help you see the future of your project, understand the next steps, and possibly start our cooperation.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    AWS IoT Core
    TCP/IP
    Firmware Programming
    Firmware
    C
    Real-Time Operating System
    Embedded System
    nRF52
    Arduino
    Embedded C
    Microcontroller Programming
    STM32
    ESP32
    AVR Microcontroller
  • $30 hourly
    As a highly skilled and experienced Embedded Software Engineer with 7 years of experience in the automotive industry, I have a proven track record of designing and developing software for embedded systems, including hardware, device driver, firmware, and applications for PC and iOS. I have strong expertise in programming languages such as C/C++, ASM, C#, Objective C, shell script, Swift, and a wide range of microcontrollers such as MCU, SoC, ARM, SH, AVR, PIC, ESP, TI CC25xx, TI CC32xx, ESP32, ESP8266. I have also developed deep knowledge in operating systems such as QNX, Linux, and RTOS such as FreeRTOS, µC/OS-III, Zephyr. My skills in embedded GUI development using Qt, uGFX, TouchGFX, and debugging tools such as U-link, Lauterbach, E10A, E1, Segger Jlink, DStream, I-Jet, GDB enable me to deliver robust and high-performance software solutions. As a former Senior Embedded Software Engineer and Team Leader, I have successfully led cross-functional teams of software engineers to deliver quality projects on time and within budget. I have also worked with various industry and automotive protocols such as CAN, LIN, Flexray, SAE J1939. Furthermore, I have experience with AWS Services, AWS IoT, and AWS Lambda, and I am always eager to learn emerging technologies and trends in the field of embedded software development. With my expertise and proven track record, I am confident that I can contribute to any organization seeking a highly skilled Embedded Software Engineer.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Automotive Engineering
    Driver Development
    QML
    Qt Framework
    Linux
    FreeRTOS
    Zigbee
    nRF52
    NFC
    STM32
    ESP32
    Embedded C
    Python
    Embedded System
  • $40 hourly
    As a versatile Embedded Systems and Machine Learning Engineer, I bring over a decade of expertise in developing robust embedded systems, IoT firmware, embedded linux, automotive and AI-driven applications. ⭐ I have worked with world leading embedded software development organizations like Mentor Graphics, Siemens and u-blox. I got an experience of working through complete product development life cycle and have lead multiple teams in above organizations. I got expertise on following area: ---------------------------------------------------------- 𝐒𝐮𝐦𝐦𝐚𝐫𝐲 𝐨𝐟 𝐌𝐲 𝐖𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 ---------------------------------------------------------- 𝐌𝐢𝐜𝐫𝐨𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫𝐬: 8051, ATSAMD21, ATSAME54, ATSAME51, EFR32, STM32F4,STM32Lxx, PSoC3,MSP430, CC2564, CC2540b, ESP32, nRF52, nRF9160 𝐅𝐏𝐆𝐀 𝐛𝐨𝐚𝐫𝐝𝐬: Spartan, Zynq series 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐨𝐫𝐬 : i.MX 6, i.MX 8, Raspberry Pi, BeagleBone 𝐑𝐓𝐎𝐒: Nucleus, FreeRTOS, MbedOs, ZephyrOS, QNX, TI-RTOS, embedded linux, raspbian, Debian 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲 𝐩𝐫𝐨𝐭𝐨𝐜𝐨𝐥𝐬 : WiFi (IEEE 802.11 a/b/g/n/r), BLE, LTE CAT1 / CAT M1, NB-IOT, 2G/3G/5G, RF and Lora modules (SX1278 etc.) ---------------------------------------------------------- ✔ 𝐏𝐂𝐁 𝐃𝐞𝐬𝐢𝐠𝐧𝐢𝐧𝐠 ---------------------------------------------------------- Altium Designer, Easy EDA, KiCAD, Proteus, Eagle ----------------------------------------------------------------- 𝐒𝐮𝐦𝐦𝐚𝐫𝐲 𝐨𝐟 𝐌𝐲 𝐖𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 & 𝗔𝗜: ----------------------------------------------------------------- I have extensive experience working with a variety of libraries and tools, including: 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 & 𝗔𝗜: TensorFlow, PyTorch, Keras 𝗖𝗼𝗺𝗽𝘂𝘁𝗲𝗿 𝗩𝗶𝘀𝗶𝗼𝗻: OpenCV, YOLO, Mask R-CNN, OPENCL, CUDA 𝗡𝗟𝗣: SpaCy, NLTK, Hugging Face Transformers 𝗖𝗵𝗮𝘁𝗯𝗼𝘁𝘀: Rasa, Dialogflow, Botpress 𝗟𝗟𝗠𝘀 / 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻: OpenAI GPT-3, GPT-4, LangChain 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲: Nvidia Jetson, Raspberry Pi ★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★ Looking to hire for embedded system or AI-powered product development? Let’s Connect to understand best fit for my skills. ________________________________________________________________________ embedded systems | embedded engineer | embedded linux developer | embedded software developer | firmware developer | esp32 firmware developer | arduino firmware developer | iot engineer | chatbots | OpenAI | ChatGPT | LangChain | LLM | computer vision | NLP | Nvidia Jetson | CNN | RNN | TensorFlow | PyTorch | Keras | OpenCV | YOLO | Mask R-CNN | SpaCy | NLTK | Hugging Face Transformers | Rasa | Dialogflow | Botpress | GPT-3 | GPT-4 | Raspberry Pi
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Internet of Things
    Software Development
    Embedded C
    Embedded Application
    Arduino Firmware
    Embedded Linux
    Microcontroller Programming
    Raspberry Pi Firmware
    Firmware Programming
    ESP32
    nRF52
    Embedded System
    FreeRTOS
    PCB Design
    STM32
  • $44 hourly
    •ELECTRONICS DESIGN, •PCB layout, •Microcontroller Software and Hardware Prototyping are my expertise. Including Industrial Automation, Power Electronics, RF Hardware and other areas of application. Being a graduate of St. Petersburg Electrotechnical Univercity with a B.S. in Engineering and Applied Sciences, I am an experienced versatile developer. Whether it’s a developing device from scratch or turning an existing prototype into the manufacturable product, I’m always happy to provide you with appropriate technical solutions which precisely fit your needs. Main offerings: • Specification analysis or creation with key technical and market points of success analysis •Electronics design and optimization, printed circuit board (PCB) layout with OrCAD Allegro •Device case mechanical design including thermodynamic, stiffness, fatigue analysis and optimization •Microcontroller firmware and a PC-side software development •Assembling and testing prototypes I dealt with many types of mechanical, electronics and 3D CAD software, so many of customer data formats are available: AUTOCAD, SOLIDWORKS, CATIA, ABAQUS, 3DMAX, MICROCAP, etc… Technologies: • C language for STM32 and PIC microcontrollers programming (SPI, I2C, RS-232/485, LCD, USB) •Delphi and C+ for desktop software •OrCAD P-spice for electronic circuit design •OrCAD Allegro for PCB creation (including 3D packages for all components) •Ansys Design modeler | Mechanical | CFX for 3D drawings | stiffness, fatigue analysis and optimization | thermodynamic analysis and optimization •Ansys Maxwell for electromechanical devices design •ADS for RF circuits design •In-house hardware prototyping (2-layer board with min 0.1 mm resolution) Please feel free to assign me difficult tasks.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Altium Designer
    Embedded C
    RF Design
    ESP32
    C
    Arduino
    PCB Design
    Firmware
    OrCAD
    STM32
    Electrical Engineering
    Internet of Things
    Bluetooth
    Microcontroller Programming
    Hardware Prototyping
  • $15 hourly
    I' m a Software Engineer with 4 years + working experience in the field. Previously I have worked as an Android App Developer and ios and android app tester. In last few years, my work has been focused on Full Stack web development, Desktop Application development, and Robotic Process Automation. ✔ Desktop Software Development. ✔ Android App Development. ✔ Web App Development. ✔ Robotic Process Automation. ✔ Software QA manual and Automation. ✔ English to Sinhala / Sinhalese Translation. ✔ Sinhala / Sinhalese Transcribing. ✔ Sinhala Voice Recording. ✔ Hard work, dedication and time accuracy make me different from others. ✔ I will work with 100% accuracy for the job I have got. ✔ Native Sinhalese / Sinhala Speaker, English (Fluent), Tamil (Basic). ✔ If you think I am capable of doing your work best for the money you pay, then hire me and see the difference. Thank You. Janath
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Project Management
    Robotic Process Automation
    Web Design
    Selenium
    WordPress
    Android App Development
    React
    Adobe Photoshop
    Desktop Application
    Java
  • $39 hourly
    ✅ 100% Client Recommendation ✅ Top Embedded and Firmware developer ✅ Top Hardware designer ✅ Top Software design ✅ Top Mechanical design and industrial design ✅ Top Enclosure design Services: 1) Hardware/Electronics design (Power, Analog, Digital/High-speed and RF electronics design) 2) Precertification testing (EMI, ESD, EMC, FCC, CE, UL) 3) Firmware design С/C++ (Bare metal MCU/MPU, FreeRTOS, Zephyr RTOS, Embedded Linux, Wireless protocols, Security, Interfaces, etc) 4) Industrial and Mechanical design (Enclosure design, 3D printing, IP standards, Prepare all for injection molding, etc) 5) UX/UI design (Embedded devices with displays, Mobile and Desktop applications) 6) Software design (Android, IOS, Linux kernel and user space development) 7) Embedded Quality Assurance(QA) and testing 8) Manual verification/testing PCB/FPC, functional and unit testing of the Firmware/Software, stress testing, temperature range testing Service->Hardware design service: - Power electronics design: (PFC, Solar charging controller, chargers, high voltage control, Motor controllers DC/AC/BLDC ) - Analog electronics design: High-accuracy analog measurements, Noise filtration, Digital to analog conversion, Amplifying signal - Digital and high-speed electronics design: - Memories DDRx/LPDDRx, SDRAM, Camera and display interfaces (MIPI-DSI, MIPI-CSI, DisplayPort, etc), Data communication interfaces (QSpi, SPI, UART, I2C, FMC, I2S, USB 2/3.x, etc), ( - RF Designs: ( 50-60 GHz (Radars), 1-6 GHz (UWB, Wifi, BLE, ZigBee, GPS, NB-IoT, LTE-M/LTE, Z-Wave, etc), 13,6 MHz, 128 kHz (NFC, RFID, etc), 433 MHz (Custom protocols) Service->Industrial and Mechanical design - Industrial design of the sketch - it includes a few sketch designs, depending on the physical sizes of the device, specific of industry and user experience - Mechnical CAD design with deep PCB integration - it includes full mechanical draw based on the industrial design with detailed sizes, materials and manufacturing specific. - Thermal calculation and simulation - it includes simulation of the heating device inside enclosure, with theoretical cooling calculation - 3D printing and verification - we use 3D printer hp jet fusion 5210, with a very nice quality of printing, that helps us to make a good verification of parts with PCBs - Injection molding - the last step, which includes manufacturing optimization and making pres forms, preparing documentation for the manufacturing Service->Firmware design С/C++: - Languages: C/C++, Assembler - Diagrams: Block, UML, Workflow, APIs - Interfaces: I2S, SAI, MIPI-DSI, MIPI-CSI, USB 2/3.x, LTDC, DDR3/DDR4/LPDDR4, I2C, SPI/QSPI, UART, CAN, Ethernet - Wireless: NB-IoT, LTE M, GPRS, GPS, LTE, UWB, WiFi, BLE, ZigBee, Z-Wave, LoRa, Thread, 6LoWPAN, Sub 1GHz, NFC (13,6 MHz), RFID 433 MHZ and 128 kHz - Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols - Security: AES, SSL/TLS, custom algorithms - Libs and frameworks: TouchGFX (GUI lib for MCU), emWin (GUI lib for MCU), LVGL (GUI lib for MCU), WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), osxMotionFX (Sensors fusion algorithm based on the Kalman theory), FatFS, lwIP (TCP/IP stack), WICED (Wifi stack), aws/amazon-freertos, Paho MQTT, TensorFlow - Embedded OS: FreeRTOS, TI-RTOS, ZephyrOs, Embedded Linux, Yocto, ROS - MCUs: NXP (i.MX RT1064, LPC1100, LPC4000), Nordic (NRF52xx/NRF53xx/NRF91xx), TI (CC3220/CC26xx/CC1100/CC3200, MSP430), Espressif (esp32, esp8266), ST(STM32H7/F7/F4/L4/F0/L0/WB/WL/G0 and STM8), Atmel/Microchip(SAM D20/D21/L21/R21/V70/V71, SAMA5/SAM4/SAMD4), Silicon Labs(EFR32, ZGM130S), Cypress (PSoC 3/PSoC 4), Kinetis (Family MK81FN256VDC15), Holtek (HT68xx) - MPUs: Analog Devices (ADSP-2156x SHARC), Qualcomm (Snapdragon 625/425/610/845), Allwinner (A64, A33, H3, H6 series), NXP (I.MX6/I.MX7/I.M8) , ST(STM32MP1) - SOMs: NVIDIA Jetson nano, NVIDIA Jetson Orin Nano, NVIDIA Jetson AGX Orin, Toradex (Colibri iMX6, IMX7, IMX8), Raspberry pi (CM3, CM4 modules), Inforce (Qualcomm Snapdragon 410, 820, 845 SOM), 8devices (Mango on Qualcomm IPQ6000/IPQ6010 Soc), Sensiedge(SensiBle 1 and 2, SensiLora) Service->Software: - Languages: Java, Kotlin, C#, C/C++, Python, Java Script - Diagrams: Block, UML, Workflow, APIs - Interfaces: USB, Ethernet - Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols - Wireless: BLE, WiFi, UWB - Security: AES, SSL/TLS - Libs and frameworks: GStreamer, Paho MQTT, WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), QT framework, Xamarin Forms and Maui, ASP .NET Core and web development, React (web UI development), SQLite DB, FireBase DB, Mong DB, InfuxDB DB, Room, TensorFlow, Node.js - OS: Android, IOS, Linux, Windows
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    RFID
    Altium Designer
    FreeRTOS
    Robotics
    ARM Cortex-M
    Firmware Programming
    Qt Framework
    Real-Time Operating System
    PCB Design
    Arduino
    NFC
    Embedded C
    Embedded Linux
    MQTT
    C++
  • $25 hourly
    Hello I am working as a PCB design Engineer for 7 years. PCB design is my profession as well as hobby. I have delivered many PCB layout for successful products. I would like to give my best service and talent to the projects here. Summary: - Schematic capture and multilayer High Speed PCB layout - IPC standard footprint and library design - Gerber verification for manufacturing and Assembly - BOM management - Knowledge of Electronics component procurements - Expertise and much hands-on experience of Soldering small SMD components - Prototyping and testing - Enclosure Design, 3D Modelling, 3D rendering and animation videos - Research and Development Tools: - Altium Designer - Altium Circuit Studio/Circuit maker - Autodesk Eagle - Kicad - Cadance Allegro/Orcad - easyEDA - CAM350 - Viewmate - Solidworks - Keyshot
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Altium Designer
    KeyShot
    ESP32
    PCB Design
    SolidWorks
    GSM
    OrCAD
    Eagle
    KiCad
    Multilayer PCB
  • $75 hourly
    I am a software engineer with solid academic background in Computer Science and 15+ years of hands-on experience in commercial development. My expertise spans Native (C++) Software, Microcontroller Firmware, Electronic Hardware and Database development. My goal here is to help businesses and startups to create new products from scratch and implement new features of already existing software and hardware products Tech stack: C++ (11, 14, 17, 20), STL, Qt 4.x – 6.x, WinAPI, MFC, ATL, Boost C++, ICU, AWS SDK C++, Microsoft Visual Studio (2003 - 2022), Clang C++, MSBuild, vcpkg, GitHub, Microsoft Visual Studio Code, CMake, QtCreator, CLion, GCC, WSL2, Keil 5, IAR Embedded Workbench, AVR Studio, Atmel Studio, mbed, SQL DBMS: Oracle, Postgres, SQLite, MySQL, MS-SQL, Firebird For more details please check out my specialized Upwork profiles. The scope of projects for the recent 10 years can be found below Native (C++) software for Windows and Linux targets: • High-performance GUI appslications based on Qt Framework (QtWidgets) • Console, no-GUI apps, pure WinAPI apps, Windows Services, system apps • Software involving intense networking and interprocess communication • High-performance / low latency software (e.g. high-frequency trading) • Application servers e.g. C++ back-end, remote procedure call / REST servers • Advanced database programming: PL/SQL, PL/pgSQL, T-SQL, C/C++ • Database client software: GUI, 2/3-tier, hardware multiplexing (IoT bridge) • Database design, extending DBMS server functionality with C++ plugins • Serial communication, hardware integration, custom protocol design Embedded systems and microcontroller firmware: • Reliable electronic hardware, low-level / real-time control systems • Microcontroller firmware for ARM Cortex-M0(+)/3/4(F)/7, STM32 and similar • Industrial control systems, distributed peripheral, remote control • Utility metering system integration over Modbus, M-Bus, ANSI, IEC, oth • Agricultural robotics, automotive ECU and test equipment
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    C
    C++
    STM32
    Multithreaded Programming
    Embedded System
    Microsoft Visual Studio
    Microsoft Windows
    Firmware Programming
    Embedded C
    Firmware
    Internet of Things
    Algorithm Development
    Desktop Application
    Qt Framework
    Microsoft Visual C++
  • $40 hourly
    ✅ 100% Job Success ✅ Top Rated Plus Upwork Engineer Let's lead your project to success together! I'm an Embedded System Engineer, Team Leader, working with C++/QT QML at LG Vehicle Component Solutions Development Center Vietnam I'm an Embedded System Engineer and IoT R&D Team Leader with 6+ years of experience. I have worked on many microcontroller architectures and finished 60+ projects using Raspberry Pi, Arduino, ESP32, ESP8266, STM32, ARM core, ... My core skills and experiences in Embedded System and Embedded Linux based system development are: ✔ Application - QT QML. ✔ Firmware development - Assembly, C, C++, Lua. ✔ PCB/Schematic - Altium Designer, EAGLE. ✔ VHDL/FPGA - Xilinx. ✔ Embedded Linux - C, C++, Bash Scripting, Python, Perl, and Device Driver Development. ✔ Hardware peripherals - UART, SPI, I2C, I2S, CAN, USB Host, USB Device (MSD, HID, CDC), Ethernet, RTC, ADC, DAC. ✔ Version Control Tools - Git. ✔ Network Protocols - MQTT, FTP, TCP, ... Experience in following wireless SOC firmware development: ✔ BLE - CC2540, CC2541, nRF51822, ESP32. ✔ WiFi - ESP8266, ESP32. ✔ GSM_GPRS - SIM800, SIM900, Al-thinker (A6, A7, A9), Queltel, ... ✔ Zigbee - CC2530, CC2531. ✔ Lora - SX1276, SX1278, EByte-E32. ✔ NB-IoT Cloud, Cloud Computing: ✔ Samsung Artik cloud. ✔ Google Firebase Database. ✔ Microsoft Azure. ✔ AWS. Operating System: ✔ Linux. QNX ✔ FreeRTOS. ✔ Windows 10 IoT Core. If you really need Good-quality hardware/firmware/application then go ahead and Hire Me... Thanks
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Arduino Firmware
    Hardware Prototyping
    Wireless Network Implementation
    Web Service
    Product Development
    Embedded System
    IOTA
    Altium Designer
    Embedded Linux
    Arduino
    Raspberry Pi
  • $30 hourly
    Specialties: SMS,SMS Gateways,Kannel,Jasmin,Bulk SMS Software,SMS Lead Generation Software, Fortumo, Twilio, Plivo,Clickatell, SMPP 3.4 , HTTP REST API,AT Commands, GSM Modules,telecommunication,VOIP,SIP,IVR. Languages: English(Fluent), French(Fluent), Arabic (Fluent) Programming Skills: PHP 5&7, PL/SQL, shell Scripting, Perl Scripting, Java, Oracle/Mysql,Oracle Forms, Oracle Reports, Solaris/Linux Unix, Application Servers, Web services, advanced XML technologies, SOA patterns.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    SQL
    J2EE
    Apache Tomcat
    CentOS
    XML
    SMS Gateway
    Oracle WebLogic Server
    Microsoft Excel
    PHP
    C#
    MySQL
    Java
    JavaScript
  • $50 hourly
    🌟 Welcome to my Profile! 🌟 👋 Looking for an experienced firmware developer and embedded systems expert to bring your project to life? Look no further! 🔥 Here's why you should consider working with me: 🌟 Client Satisfaction: 87% of my clients recommend my services, and 33% of them become long-term clients. I'm committed to delivering results that exceed your expectations. 🎓 Ph.D. in Radiophysics: With a Ph.D. in Radiophysics and over 20 years of experience, I bring a wealth of knowledge to the table. My expertise spans firmware development, embedded systems, microcontroller programming, and end-to-end project development. 🚀 Proven Track Record: I've successfully completed over 100 projects in diverse domains, including: Internet of Things (IoT) Embedded Electronics Development Machine Vision Smart Home Electronics Wearable Electronics Start-up electronics development (Kickstarter, Indiegogo) Apple HW development Sensors Development Radars Development PCB development, Mass Production 🔍 About Me: I remember the big round eyes of my dad when he saw me with a soldering iron in my little hands, attempting to fix Christmas lights. As I grew older, my passion for engineering only deepened. I hold a degree in Electrical Engineering, and my work revolves around electro-optics, RF/wireless, embedded systems, and harsh environment electronics. Technology is in my DNA, and I thrive on creating and innovating. 🛠️ My Lab: My workspace is a temple of technology, equipped with oscilloscopes, signal generators, power supplies, and various other tools. I'm not limited to specific tools and am open to using whatever is required for your project. I often embrace open-source or low-cost design tools to make high-quality devices accessible. ✅ Areas of Expertise: Embedded systems Analog circuits Digital circuits Low power & battery-operated devices Wireless designs Microcontroller (e.g., AVR, STM, MSP, TMS, etc.) DSP, SDR, RF, UHF design 📡 Microcontroller Experience: I have specific experience with microcontrollers from various manufacturers, including Atmel, Silabs, ST, Cypress, Xilinx, TI, Espressif Systems, and Nordic. 🤖 Embedded Platforms: I'm well-versed in working with platforms such as Raspberry Pi, Beagle Bone, Mediatek, Ratlink, Atheros, Paralela, Qualcomm Snapdragon, and Nvidia Tegra. 💻 Programming Languages: My coding skills include C/C++, Assembler, Python, VHDL, Java, OpenCV, C#, PHP, and JS. 🖥️ Operating Systems: I'm proficient in Embedded Linux, RTLinux, FreeRTOS, embOS, and QNX. 🌐 Standards and Technologies: I'm familiar with WiFi, Bluetooth, BLE, LoRa, OLED, LCD, TFT, Altium Designer for PCB development, inductive and capacitive sensor technologies, and ultra-low power electronics power harvesting. Ready to bring your project to life? Let's collaborate and turn your vision into reality! 🚀
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Machine Learning
    Digital Electronics
    Firmware Programming
    Digital Signal Processing
    RFID
    Analog Electronics
    Embedded C
    Embedded System
    Embedded Linux
  • $25 hourly
    Schedule a 30-minute free call to discuss your project I am a TOP RATED PLUS freelancer with over 15 years of experience in Embedded software/firmware development and hardware designing. I can provide services in the following domains Firmware development C/C++, Python, Micropython, IoT work: * ESP32 (Cam, WiFi, BLE) ESP-IDF toolchain, Arduino, and VS code * STM32 * FOTA (Firmware Over The Air upgrade), Bootloader * LoRa communication using SX12xx series * Raspberry Pi/Beaglebone black * GSM SIM800, M95, BG95-M3 (Socket programming, HTTP, HTTPS) * Arduino * Nextion and TFT LCD interface development * Work on any kind of sensor digital or analog and have extensive work experience with these communication protocols UART, SPI, I2C, CAN, LIN, One wire * Follow the good programming practices Hardware Designing: I can design PCB using the following software: * Eagle, Altium, Proteus * PCB Design single layer, two layers, and multi‐layered PCBs using industry standard * Knowledge of IPC industry standards and a working knowledge of electronics * RF, WIFI, GSM module & PCB Antenna design I also help you with PCB manufacturing and component sourcing. Mentoring in embedded systems and PCB designing by providing online lectures. If you have any idea then share with me and let's make it together. I do solo projects and also have a small team working with me on different projects. Cheers
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    PCB Design
    Circuit Design
    Product Design
    STM32
    Firmware
    LoRa
    Arduino
    Embedded System
    ESP32
    C
  • $60 hourly
    👋 Hi, I’m a CTO of Iomico IoT development company. We have over 10+ years of experience in firmware & and electronics and over 20 years of experience in software development. We successfully completed a number of IoT projects in the aerospace, manufacturing, logistics, retail, automotive, healthcare, and consumer industries. I encourage you to learn more about Iomico in our intro presentation: 👉 cutt.ly/KXdNUcf 💥We specialize in creating advanced hardware, firmware, and software solutions for start-ups and established companies. Moreover, we have a very experienced and trustworthy development team passionate about technology and innovation. That’s why we deliver you the best project result and keep you away from any risks. 🎯 Electronics engineering: ✔️radio-electronic parts research & selection ✔️Schematics ✔️PCB design ✔️Simulations & Analysis ✔️Review of your current designs 🎯 Firmware technologies we use: ✔️C/C++, Verilog, VHDL, Qt, Python ✔️Baremetal ✔️RTOS (Zephyr, FreeRTOS, AWS RTOS, Chibios, RT-Linux). ✔️Embedded Linux (OpenWRT, uCLinux, Yocto, and stand-alone Linux applications/services/drivers) ✔️Protocols: MQTT, TCP, WebSockets, HTTS(S), FTP, UDP, HTTP, SSH, etc. ✔️Wired and Wireless Networking (BLE / Bluetooth, ZigBee/Z-Wave, UWB, Lora / LoraWAN / 6LoWPAN, RFID, NFC, Mesh Networks, Thread, MLM2M, GSM 3G / 4G /5G, LTE, NB-IOT, Wi-Fi, GPS / GNSS (Galileo, GLONASS, BeiDou), PCIe Gen2/3/4, SATA R.3.x, LVDS, SDI, 10/100/1000 Ethernet, USB up to 3.2, HDMI, MIPI-CSI, MIPI-DSI and more). ✔️Design of MCU/CPU firmware (Nordic Semi (NRF52832, NRF52840, NRF5340, NRF9160, NRF7002), Rockchip (RK3399, RK3328), NXP (i.MX8, i.MX9, Layerscape), STM (STM32H7 and others), Microchip/Atmel, Texas Instruments (Sitara AM57x series), Espressif (ESP32, ESP8266), Renesas, Cypress, Infineon, Nvidia Jetson and any others). ✔️FPGA: Lattice, Xilinx, Intel, Microchip. 🎯 Software technologies we use: ✔️Java, Kotlin, PHP, C#, JavaScript (Angular, React, VueJS, NodeJS). ✔️iOS (Swift, Objective C) and Android (Java, Kotlin) programming, AOSP, cross-platform QT, and React Native. ✔️MySQL, PostgreSQL, OracleDB, MSSQL, MangoDB, RedisDB, and other cloud relational and NoSQL databases. ✔️Messaging queue tools like RabbitMQ, Kafka. ✔️Public and private clouds: AWS, Google Cloud, Digital Ocean, OpenStack. ✔️Cloud clustering / horizontal scaling: Docker, Kubernetes. ✔️OTA: Mendor.io 🎯 Edge AI / Computer Vision: ✔️PyTorch, TensorFlow, MediaPipe, OpenCV, Deepstream ✔️Research and development solutions for “smart” edge devices 🎯OTA: Mender.io, RAUC, Esper and etc. Let me explain how everything works: 1️⃣ First of all, we sign an NDA and arrange a conf call to learn more about your project. 2️⃣ If we agree on each other’s terms, you shall make a prepayment of an amount equal to two weeks of my work on the project. This prepayment shall be used as an advance retainer for my services. 3️⃣ Then, I get down to work alone or with my iomico team, and the payments should be done biweekly. 4️⃣ Please pay attention to my hourly rate and that I work only from the Iomico agency. Furthermore, having released the code, I guarantee the support of the developed product. If you’re ready to implement your ideas (no matter how crazy they are), don't hesitate to contact me here or write to my company Partnership Manager, Michael Bychko - m.bychko@iomico.us.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Hardware Design
    Mobile App Development
    Firmware Programming
    OpenWrt
    Node.js
    Kotlin
    PCB Design
    FreeRTOS
    Wearable Technology
    Internet of Things
    Computer Vision
    C
    Zigbee
    LoRa
    GSM
    C++
    nRF52
    Bluetooth
    Embedded Linux
  • $20 hourly
    I'm a web developer with 3+ years of Web development, design, and database experience. I have done some projects under various niches like e-commerce, real estate, cars, photography, and education. I have hands-on experience in PHP, MySQL, HTML5, CSS, Bootstrap, Python, React.js, and Various Javascript frameworks. I'm a problem solver. And I can learn new things fast when needed. Aim: I aim to help backend developers, Professionals and Startups reach their goals by providing a comprehensive design, I assist them in managing their time and allowing them to focus their attention on more critical aspects. Focus: I have three main focus which is to make your life easier, help expand your business and help you make more money because your goal is my goal. Watchword: Quality, Speed, and Accuracy. My expertise : *WordPress installation, Design, Updating, and Editing themes and Post) *Mysql(creating, updating, and deleting database) (Creating HTML Website from PSD file or Scratch) If you think we would be a good fit, please let's chat I look forward to working with you.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    AMP Framework
    Responsive Design
    Data Scraping
    Selenium
    Beautiful Soup
    Python
    HTML5
    JavaScript
    Web Design
    Front-End Development
    Bootstrap
    WordPress
    SQL Programming
    PSD to HTML
    CSS 3
  • $35 hourly
    🤝 Hello! I am PROfessional Hardware and Firmware Engineer! 💎 20+ years experience 🏆 40+ successfully projects ✅ IP video cameras ✅ IoT devices ✅ Wireless ✅ Crypto Miners and Wallets ►► Click Me ►► 🌟 About me: Since childhood, I have been passionate about electronics and programming, loved to disassemble and assemble various devices. As I got older, my passion turned to electronics, and I decided to get a degree in electrical engineering. Since then, I have been constantly improving my knowledge and have been working in the field of embedded systems and product development for many years. Over the years, I have acquired unique skills in the field of electro-optics, wireless, communication, IoT and cryptocurrency devices. I enjoy creating, improving and repairing electronic devices, and every part of my work - from the creative process to production - gives me pleasure. The main directions of developments: ✅ Analog, Digital, Wireless ✅ IP and AI video cameras ✅ Smart IoT devices ✅ Communication and wireless devices ✅ Devices for cryptocurrency ✅ Automatization devices Full cycle of device development: ✔︎ Development of technical specifications ✔︎ Design of schematic and PCB (HDI, Multilayer, High-Speed, Wireless, FFC and FPC cables) ✔︎ Development Embedded Software: Linux, drivers, firmware for MCU, SoC, FPGAs ✔︎ Production, bring-up and testing of prototypes and samples ✔︎ CE, FCC pre-certification ✔︎ Prepare and Technical support at all stages of production Factsheet: 🔑 Great history of projects on Upwork , where I am a highly professional engineer with many long term clients. 🔑 Interested in working with complex tasks. 🔑 Turned cool and crazy ideas my customers into real devices with unique functions and the best features on the market. 🔑 I help startups, teams or business reach a new level. 🔑 Do you want an perfect result? Work with professionals! Digits: 💎 For more than 20 years I specialize in the development of electronics and firmware. 🏆 More than 40 successfully completed projects, most of which are in mass production. ⭐ My clients earn more than $5 million a year. ⚡ ROI above 1000% in mass production. 💥 The total cost optimization for the series is above $1M per year. I am working on reducing the final cost of the product. $5 - $10 savings per device gives savings in $50 000 - $100 000 for a small series of 10,000 pcs. This fully recoups the development costs. My customers are Western companies, which I help to enter the market with innovative ideas: ► boqpod GmbH, Switzerland ► URBX, USA ► Infinet Wireless, Malta ► EKIN Europe, Germany ► LAOBAN AG, Switzerland ► ICRealtime LLC, USA Using the most modern software for electronics designing and embedded software. ☑ ECAD: Altium Designer, Cadence Allegro, OrCAD, KiCad, Sigrity ☑ Embedded Software Tools: GCC, GDB, Git, Eclipse, Keil, IAR, CooCox, Atmel Studio, STM32CubeIDE ☑ FPGA Tools: Lattice Diamond, Quartus, Vivado ☑ Languages: C/C++, Assembler, VHDL, Verilog ☑ MCAD: Solidworks, FreeCAD, AutoCAD ⚒ ESD-safe laboratory with modern measure equipments: - High-frequency oscilloscopes with 4 channel 1GHz - High-speed Logic analyzer, up to 256 channels, up to 2Gb - High-frequency spectrum analyzer for EMC-pre compliance testing - High-frequency Signal Generator - High precision instrumentation: Multimeters, RLC, pyrometer, lux meter, etc - High-quality laboratory power supplies, electronic load - Soldering station, reflow oven and rework tools for manual assembly and repair of prototypes - 3D printer and CNC machine This allows me to produce, debug and test the most complex prototypes. SoC: * Marvell (ARMADA) * Broadcom (BCM) * Rockchip (RV, RK) * NXP (i.MX6, i.MX7, i.MX8, i.MX9) * STMicroelectronics (STM32MP1) * Microchip (PIC32) * Atmel (AT91SAM, ATSAMA5) MCU: * STMicroelectronics (STM8, STM32F, STM32L, STM32WB, STM32WL) * Microchip (PIC16, PIC18, PIC24) * Atmel (ATtiny, ATMega, AT32, AVR) * Texas Instruments (MSP) * Analog Devices (ADuC) * Maxim (MAX32520) FPGA: * Xilinx (Zynq-7000, Virtex, Spartan) * Lattice Semiconductor (ECP3, ECP5, CrossLink, MachO2, MachO3) * Intel / Altera (MAX, Cyclone, Arria, Stratix) SoM: * Nvidia Jetson TX2 * Nvidia Jetson TX2 NX * Nvidia Jetson Nano * Nvidia Jetson Xavier NX * Nvidia Jetson Xavier AGX * Nvidia Jetson Orin NX * Nvidia Jetson Orin AGX * Nvidia Jetson Orin Nano Image sensors Sony: imx415, imx283, imx542, imx565, imx566, imx567, imx568 Wire interfaces: * 10/100/1G Ethernet, PoE, PoE+, PoE++ * USB2.0, USB3.0, USB3.1, USB3.2, USB type-C * PCIe Gen 4, miniPCIe * SSD NVMe, SATA * SFP * RS-232, RS-485, RS-422 * KNX-TP, CAN * LVDS, MIPI DSI, HDMI, RGB * SLVS, SLVS-EC, MIPI CSI-2 Wireless interfaces: * Wi-Fi, Bluetooth * GSM, GPRS, 2G, 3G, 4G, LTE * GNSS Embedded Software Development: * Firmware for microcontrollers * Board Support Package (BSP) * Linux Kernel and Drivers * FPGA development
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Electronic Design
    Multilayer PCB
    KiCad
    Cadence Platform
    FPGA
    Embedded Linux
    Driver Development
    PCB Design
    Embedded System
    Hardware Prototyping
    Digital Electronics
    Verilog
    Altium Designer
    Microcontroller Programming
  • $40 hourly
    🚀 Innovative Solutions for Embedded Systems & IoT 🚀 I am a dedicated embedded firmware engineer with 7+ years of experience in designing and developing high-performance embedded systems. I specialize in bare-metal, RTOS, and embedded Linux development, bringing complex IoT products to life with efficient, scalable, and reliable solutions. 🔹 What I Offer: ✔ Embedded & Real-Time Systems Design – From concept to fully functional firmware. ✔ Board Bring-Up & Hardware Testing – Ensuring seamless integration of software & hardware. ✔ Bare-Metal & RTOS Firmware Development – Optimized, efficient, and real-time execution. ✔ Embedded Linux Application Development – Custom applications and middleware. 🔹 Technical Expertise: ✅ Programming: C, C++,Python, Perl, Javascript ✅ RTOS & Firmware: FreeRTOS, Zephyr, TI-RTOS, Micrium OS-III ✅ Hardware Interfaces: I2C, SPI, USB FS/HS, UART, ✅ Networking: TCP, UDP, NTP, HTTP, MQTT, LWM2M ✅ Protocols: LTE, WiFi, BLE, Ethernet, ESPNow,Thread,Matter,Zigbee,NFC,GPS,GNSS, ✅ Microcontrollers & Processors: ARM Cortex-M4/M0+, STM32, TI TM4C, EFM32, Nordic nRF52, ESP32, nRF5340, nRF9160, nRF7002 🔹 IoT & Connected Devices Experience: 📡 Cellular: nRF9160, Telit-LE910, u-blox SARA/LARA/TOBY/LISA series 📡 WiFi: ESP32, TI CC32 series, nRF7002 📡 BLE: nRF528xx, nRF5340 📡 GNSS: u-blox Zoe M8 If you're looking for a firmware expert who can optimize performance, ensure reliability, and accelerate time-to-market, let's connect! 💡 📩 Let's discuss your project and build something amazing together!
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    MQTT
    Firmware Programming
    ARM Cortex-M
    WiFi
    nRF52
    Microcontroller Programming
    STM32
    C++
    Embedded System
    Embedded C
    Python
    C
    ESP32
  • $14 hourly
    Hello there! I have EXTENSIVE experience managing listings on Airbnb, VRBO, Expedia, Booking, TripAdvisor, Agoda, and others. I am a professional Airbnb super host who managed over 100 commercial and residential listings in multiple cities in the United States. I have been in this field since 2020 and have a vast knowledge of the short-term rental business. ➦ I'm providing the following services at my best effort:- ➽ Airbnb Optimization Services: If you are looking to enhance your booking rates and increase Airbnb's search ranking. Then, look no further! Boost your booking rates and Airbnb search ranking with our top-rated services. Over multiple positive client reviews on Upwork speak to our success. We offer transparent, helpful assistance for hosts at Upwork, starting at just $ low price/month. ➽ Airbnb Listing Optimization Optimizing your Airbnb listings can significantly enhance your listing's visibility, attract more guests, and increase your revenue. Here are some key actions I can take to maximize the potential of your Airbnb property: Detailed Listing Description, Pricing Strategy, Optimizing Airbnb titles and Tags, and Continuous Improvement with effective strategies. ➽ Airbnb Management Services: I can manage your Airbnb properties efficiently and perfectly with my previous experience. I have a team with 12 members who can join me to make the entire operation as smooth as possible. ➽ Airbnb Guest Communication Services: My Airbnb Guest Communication Services offers an unparalleled level of support, ensuring your guests receive around-the-clock assistance. My expert team provides prompt and professional responses, guaranteeing 24/7 availability to address any queries or concerns. ➽ Airbnb Short-Term Rental Reporting Service: I provide you with easy-to-understand financial reports, helping you keep track of income, expenses, and profit margins for each property. My reports break down your earnings by month, property, and more. ➽ Also, I can help you to publish your listings on Google Vacation Rentals (GVR). Please check my portfolio projects to know more about it. ➽ Listing vacation rental properties, optimization, rank boosting, and promotions ➽ Availability management and pricing, market research, and seasonal pricing setup ➽ Managing reservations from booking platforms like Airbnb, VRBO, Booking.com, and more ➽ Price optimization using Price Labs or Neighborhood data ➽Property Management System (PMS) I am experienced with: Guesty, Hostify, Hospitable, Hostaway, Smoobu, Lodgify, iGMS, Uplistings, PriceLabs, Rentals United, Beds24 ➽ Online Travel Channels, I'm experienced with: Airbnb, Booking.com, Expedia, HomeAway, VRBO, Agoda, TripAdvisor, Silverdoor, Nestpick, Acomodeo, Housing anywhere, Homelike, Uniplace etc. ➽ Service lists at a glance... Here are the service lists that I can provide you for your short-term rental business:- • Managing reservations from booking platforms like Airbnb, VRBO, Booking.com, and more • Preparing the business and rentals daily for new guests • Communicating with guests through online software platforms • Answering booking inquiries • Managing calendars across booking platforms • Calculate accommodation prices (PriceLabs or Manually) • Responding to guests’ complaints, questions, and discount requests • Scheduling and managing cleanings after check-outs • Managing and communicating with cleaning, laundry, maintenance staff & property managers • Filing claims for guest damages on the online platforms • Reading, writing, and responding to guest reviews after they check out • Creating social media posts and responding to inquiries on social media sites • Troubleshooting technology and websites when not working • Setting up and managing rental listings on multiple rental websites
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Property Management
    Real Estate Project Management Software
    Booking Management System
    Booking Services
    Real Estate Listing
    Virtual Assistance
    Facebook Advertising
    Social Media Advertising
    Social Media Account Setup
    Real Estate Marketing
    Project Management
    Facebook Ads Manager
    Expert
    Travel & Hospitality
    Real Estate
  • $100 hourly
    Greetings! I am a proficient VoIP developer with a focus on Asterisk, Kamailio, and PHP Laravel, backed by substantial experience in backend development. Beyond this, I possess a strong AI background, enabling me to create cutting-edge VoIP solutions enriched with artificial intelligence capabilities. My Expertise Includes: VoIP: Asterisk, Kamailio, RtpEngine, SIP, RTP, SRTP, Call Center Solutions: Twilio, Sip trunk, Numbers Automation & Autopilot: Enhancing efficiency through smart processes Web Development: PHP Laravel, API development, Laravel Nova, Frontend Technologies: Vuejs, Tailwindcss, TailwindUI Database: Mysql, Redis, JSON for data storage and retrieval Version Control: Git, Github, Gitlab, Bitbucket, Gitflow Agile Project Management: Jira, Scrum, Trello for streamlined collaboration Server & Infrastructure: Linux, Centos, Ubuntu, Firewall, Fail2ban, Virtualization DevOps: Docker, Kubernetes, ensuring smooth and scalable deployments AWS: EKS (Elastic Kubernetes Service), ECS (Elastic Container Service), and comprehensive knowledge of other AWS services for a robust cloud infrastructure. AI Integration: Utilizing AI in VoIP solutions, including Text-to-Speech and Speech Recognition, to deliver personalized and interactive experiences over the phone. Chatbot Implementation: Creating intelligent chatbots for seamless communication and enhanced customer support in VoIP applications. I am enthusiastic about leveraging AI technologies to revolutionize VoIP solutions, providing exceptional user experiences and increased efficiency for your projects. Let's collaborate on long-term ventures and harness the potential of AI to transform your VoIP systems. Please feel free to reach out, and let's explore the possibilities together!
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    VoIP Administration
    Telecommunications
    VoIP
    Application Integration
    Asterisk
    Telecommunications Engineering
    VoIP Software
    Kamailio
    Linux System Administration
    API Development
    Laravel
    API Integration
    PHP
  • $45 hourly
    Robotics, drones, electronics, mechanics and prototyping. Full cycle of equipment development. A qualified development team is all GEC Engineering company. I am the CEO of GEC engineering. Over the past 15 years, I have designed and developed industrial devices, resulting in 150+ success stories and 8000+ hours of experience of Upwork. As a SolidWorks professional designer and mechanical engineer, I specialize in using SolidWorks for more than 10 years to design and build machines and mechanical systems. With my knowledge of mechanical engineering and machine design, I can help you develop high-quality designs, 3D models, and prototypes for your products. I also have a team of engineers who can assist with your projects, from concept to mass production. In addition to mechanical engineering, I have extensive experience in IoT device design, circuit design, PCB design, control system design, and electronics equipment development. I can help automate domestic and industrial processes and design custom solutions for IoT, data logging, control, battery-powered wireless devices, and more. My expertise includes working with AtMega, STM32, PIC, and other controllers, as well as ready-made modules such as Arduino, Raspberry Pi, WiFi, Bluetooth, GPS, RFID, and wireless. I also have experience with engines, drivers, and common tools. Lastly, my company specializes in SCADA systems design, PCB production using laser engraving and 3D printing, soldering, and industrial automation. We have experience in AI and IoT devices, specifically in the oil refinery industry. Website of our company - gec-engineering.tech
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Concept Development & Testing
    Full Production
    Python
    Drone
    Mechanical Engineering
    Mechanical Design
    Arduino
    PCB Design
    Raspberry Pi
    C++
    Electrical Engineering
    Product Development
    SolidWorks
    Altium Designer
    CAD
  • $25 hourly
    I am a strong web & mobile designer and developer with many years of experience. I am very good in php framework like zend, laravel, code Igniter. I do much in Core and OO PHP, mysql and javascript ,jquery, bootstrap, angular-js, Logo Design, Brochure Design, Banner Design, Adobe Photoshop, Illustrator, Responsive Design, Wordpress, Shopify, Ecommerce, Ajax, Magento, I design and develop responsive websites and web applications (mobile, desktop, tablets) with Twitter Bootstrap,HTML5, CSS3, i design and develop mobile applications in android, windows phone and ios , using java, phonegap, ionic and web technologies. Am also good in ElasticSearch Apps Development Am Excellent in developing client/server applications, ERP systems using excellent web technologies. I love working in teams and i have good communication skills. Client satisfaction and quality work are my top priorities and my clients are always satisfied with my work. I have developed many web/mobile applications and complete ERP systems for individuals, schools, hospitals and companies. I like to learn and discover new technologies to improve my skills and keep me up to date. With the experience i have acquired so far, i am sure i can meet your expectations. My Skills Set : - Laravel, Code Igniter, Zend - Php, Html, css, mysql, angular(1-5)js, vue2js, reactjs, bootstrap - git for version control - hosting: Aws, digital ocean, linode and Virtual Machines , nginx - Server management with good linux skills. - Hybrid Mobile App Development: Ionic, cordova, android, ios , phonegap. - Video Streaming , Elastic Search -Social Media Authentication -Third Party Api Integration : Facebook, twitter,google maps , social auth etc... =========================== My Laravel Package ========================== github.com/ngambmicheal/mobilemoney Mobile Money is payment service which you can integrate in your application to perform payment via Mobile Money providers like MTN Mobile Money and Orange Money
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    jQuery
    Elasticsearch
    Laravel
    React Native
    Angular
    Node.js
    Python
    Apache Cordova
    HTML5
    React
    AngularJS
    Ionic Framework
  • $30 hourly
    I am a professional embedded software engineer with more than six years of experience. My current areas of expertise are IoT Applications & Embedded Systems Design, including embedded hardware/software. 𝐌𝐘 𝐒𝐊𝐈𝐋𝐋𝐒: - Know about MCU: Nordic, Silicon Labs, AVR, PIC, ESP, TI CC32xx, ESP32, Qualcomm QCC51xx, etc. - Have experience in programming languages such as C/C++, C#, Java - Solid knowledge of standard interfaces such as I2C, SPI, UART, and CAN. - Have experience using debugging tools such as Segger Jlink, CAN bus analyzer, and Logic analyzer. - IoT devices with wireless connectivity such as LTE, CAT-M1, NB-IoT, LoRa/LoRaWAN, BLE, WIFI, NFC - Good experience in AWS Service, AWS IoT, AWS Shadow, and AWS Jobs. - Good experience in Battery Management Systems based on BQ products from TI. - Good experience with Audio Codec chips. - Experience with AI/ML on Edge Impulse with nRF Connect - True wireless earbuds, headsets and speakers, Bluetooth ® LE Audio standard from Qualcomm: QCC5141, QCC5171, QCC5181,... We have worked with wearable devices and medical devices: - ECG 1, 3, 12 leads with ADS1292, ADS1293, ADS1298 - EEG with ADS1299 - Body temperature with MAX302025, MAX30208 - PPG with MAX86178, MAX86178 - SPO2 with OB1203, MAX32664 sensor hub - Vital signal with AFE4950 - OTA firmware update via Bluetooth/WIFI 🔑𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: Embedded Design, Hardware Design, Firmware Development, Mobile App Integration, IoT Device, Medical Device Design, Embedded Systems, Real-time Operating Systems (RTOS), Microcontroller Programming, Sensor Integration, Wireless Communication (Bluetooth, Wi-Fi), Low Power Design, Wearable Devices, Firmware Architecture, Embedded Software, Device Drivers, System-on-Chip (SoC), PCB Design, Signal Processing, IoT Platforms, Cloud Integration, Mobile App Development, Web Portal Design, Healthcare Technology, Remote Monitoring, Data Security, Telemetry, ARM Cortex, ESP32, Device Connectivity, Embedded Prototyping, Human-Machine Interface (HMI), Medical Device Compliance, Mobile-Connected Devices, IoT Security, BLE, Firmware Debugging, Connectivity Solutions, Edge Computing, Smart Devices, Industrial IoT.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Bluetooth LE
    Flutter
    Mobile App Development
    Zephyr
    Circuit Design
    Microcontroller
    Firmware Programming
    Electrical Engineering
    Electronic Design
    nRF52
    Microcontroller Programming
    STM32
    PCB Design
    ESP32
  • $35 hourly
    I am an Electronics Engineer with an experience in Hardware designing and products development . With a team of passionate DESIGN-THINKERS, curious PRODUCT STRATEGISTS, and innovative DIGITAL TRANSFORMERS we providing turnkey solutions from idea till production . Services: •End to End IOT solutions . • Machine to Machine (M2M) solutions. •PCB Design , assembly and testing . • Analog &Mixed Circuit design. • hardware prototyping . • developing various Microcontrollers and modules like: Electron ,Boron , Photon from particle.io . ESP8266, ESP32 . Arduino .
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Internet of Things
    Embedded C
    ESP32
    Electronics
    ESP8266
    Firmware Programming
    nRF52
    C
    LoRa
    Arduino
    Circuit Design
    PCB Design
    Embedded System
    C++
    Hardware Prototyping
  • $25 hourly
    Skills: Embedded systems development, PCB designing, Hardware design, Internet of Things, Prototyping, Proof of concept, Firmware development, Arduino, ESP32, Bluetooth, WiFi, CAD, Mechanical engineering, Electrical engineering, Product design, Circuit design I am a seasoned Embedded Systems Development Engineer with over 15 years of industry experience. With a team of highly skilled professionals, we specialize in managing and delivering comprehensive solutions for major projects, overseeing the entire journey from conceptualization to the final product. Equipped with state-of-the-art facilities in my lab, we possess the capabilities for rapid prototyping and efficient PCB assembly, ensuring swift and precise execution of projects. Our expertise extends beyond embedded systems, as we also boast proficient teams in diverse domains such as Website Development, Mechanical CAD, Mobile App Development, Graphics, and Animations. By harnessing our collective proficiency and utilizing cutting-edge technologies, we strive to provide exemplary services that meet the unique requirements of each project. Whether it's creating intricate embedded systems, developing captivating websites, designing intricate mechanical models, crafting intuitive mobile applications, or producing visually stunning graphics and animations, our team is dedicated to delivering superior results.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Embedded System
    Web Development
    PCB Design
    Search Engine Optimization
    3D Animation
    Mechanical Design
    Bluetooth LE
    Product Design
    iOS Development
    Android App Development
  • $45 hourly
    Welcome !!! With a strong foundation in C++, C#, and Java, I specialize in crafting robust desktop applications utilizing .NET, WPF, and JavaFX frameworks. My expertise extends to the embedded systems, particularly focusing on ARM Cortex-M microcontrollers (mostly STM32 and TI), where I excel in developing front-end applications and leveraging technologies like FreeRTOS, LwIP, mbedTLS, aws-iot, TouchGFX. Having a keen eye for detail, I bring creativity and efficiency to every project, ensuring seamless user experiences across various platforms. Whether it's building intuitive desktop interfaces or optimizing performance for embedded systems, I am committed to delivering solutions that exceed expectations. Moreover, I am well-versed in backend development, proficient in ASP .NET and Node.js, enabling me to integrate comprehensive backend functionalities seamlessly into applications. With a track record of successful projects and a dedication to staying updated with the latest industry trends, I am eager to collaborate on your next venture. Let's turn your ideas into reality. Connect with me to discuss your project requirements and explore how we can achieve your goals together.
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Reverse Engineering
    OpenCV
    STM32
    Embedded System
    Raspberry Pi Firmware
    C
    .NET Framework
    Java
    C++
    C#
  • $80 hourly
    "One of the best services I got in the past 20 years. Super professional and knowledgeable. Much experience. Remarkable communication skills. Attentive immediately when I needed to. Solved 100% of my problems and gave me ideas for new directions. My business is growing thanks to him. Thank you, Jure" Do you have a crazy idea about a new device, sensor, wearable, or microcontroller in eHealth, Industry, Logistic, or Research? And you do not know if it is doable, how to start it, or what are possibilities? Yes, the Internet of Things world is strange. How about investing in a short consulting hour call with me? I will answer your questions, and I am competent to say that your idea won't work, but also suggest an alternative. My motto is "Fail fast without big consequences, learn something, repeat, succeed!" A resourceful, creative, passionate and highly driven individual with communication and project skills and out-of-the-box thinking. Keen on solving unique tasks. I come from a highly technical background (BSc in IT). I’ve been the owner and the CEO of various IT companies, which is how I started working in management and business development. I am still an ongoing PhD candidate in business and management. Multi-awards winning project/team leader and IoT consultant. Most of these consisted of proofs-of-concept (POC), prototypes, mobile apps and back-ends for IoT, Industry 4.0, healthcare (eHealth, telehealth, telemedicine), SmartCity, AAL, SmartHome with sensors (acc, ECG, GPS, environmental), beacons, controllers, wearables (smartwatches and smart-bands) and embedded systems (Raspberry PI, Arduino, ESP32), using WiFi, Bluetooth (BT, BLE, BLE Mesh), LoRaWAN, NB-IoT in several big EU funded R&D and other commercial projects. Eurostars Eureka IoT evaluator. Solutions: - SandBox.engineering - SandBox is OT and IT IoT Engineers’ Swiss Army Knife. It provides a controlled learning, testing, and experimentation environment, enabling users to acquire domain expertise and confidently evaluate different vendor solutions. - IoTool.io - the multi-awards winning IoT solution and a platform incorporating Client / Dashboard / Gateway / Cloud / API all on the Smartphone, supporting more than 100 different devices using Bluetooth. - IoChat.io - the highly secured, self-deployed in-premises text, audio, video chat, screen and file sharing WebRTC solution used in hospitals and nursing homes, for patient and doctor communication or as a general-purpose video conferencing system, easily integrated into any platform, - IoTconcept.team - fast agile IoT prototyping, - CrowdSensing.mobi - the smartphone platform used by a large, spread-out group of participants to collect and receive reliable data from the field. I have a fairly unique skill-set that will help your business by combining your needs and wishes (product and IT) with your business end. Sometimes, I wasn't smart enough to know that I couldn't do it, so I did it. 😊
    vsuc_fltilesrefresh_TrophyIcon GSM Developers
    Android App Development
    Core Bluetooth
    Firmware Programming
    Healthcare IT
    Concept Design
    PCB Design
    Microcontroller Design
    Research & Development
    WebRTC
    React Native
    Mobile App Development
    Internet of Things
    Bluetooth
    Wearable Technology
    Prototyping
  • Want to browse more freelancers?
    Sign up

How it works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a GSM Developer on Upwork?

You can hire a GSM Developer on Upwork in four simple steps:

  • Create a job post tailored to your GSM Developer project scope. We’ll walk you through the process step by step.
  • Browse top GSM Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top GSM Developer profiles and interview.
  • Hire the right GSM Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a GSM Developer?

Rates charged by GSM Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a GSM Developer on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance GSM Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream GSM Developer team you need to succeed.

Can I hire a GSM Developer within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive GSM Developer proposals within 24 hours of posting a job description.

Schedule a call