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Sergii P.
$39/hr
100% Job Success
$2M+ earned
Available now
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✅ 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
Terence B.
$45/hr
100% Job Success
$400K+ earned
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Terence B. has worked .
🏆 𝗨𝗣𝗪𝗢𝗥𝗞 𝗘𝗫𝗣𝗘𝗥𝗧 𝗩𝗘𝗧𝗧𝗘𝗗 💪 Top 1% of performers | 15,000+ hours 🎖️ Top Rated Plus | 100% Job Success ✔︎ 20+ years experience in Embedded Systems, IoT & Full Stack Development I design and develop production-grade embedded and IoT systems, from firmware and hardware integration to cloud-connected platforms. Specialized in STM32, Nordic nRF52/nRF53/nRF91, ESP32, RTOS (FreeRTOS/Zephyr), and secure C/C++ firmware development. I help companies turn hardware concepts into reliable, scalable, real-world products. 🚀 𝗔𝗕𝗢𝗨𝗧 𝗠𝗘 I am a Senior Embedded Systems and IoT Engineer with over 20 years of experience delivering production-ready systems across embedded firmware, hardware design, cloud infrastructure, and full stack applications. I specialize in end-to-end system development — from low-level firmware and PCB collaboration to cloud integration and application layers — ensuring robust and scalable real-world deployments. I work with startups and engineering teams to transform complex ideas into reliable production systems. 🔧 𝗘𝗠𝗕𝗘𝗗𝗗𝗘𝗗 𝗦𝗬𝗦𝗧𝗘𝗠𝗦 & 𝗙𝗜𝗥𝗠𝗪𝗔𝗥𝗘 Extensive experience in production-grade embedded firmware development. ▸ 𝗠𝗜𝗖𝗥𝗢𝗖𝗢𝗡𝗧𝗥𝗢𝗟𝗟𝗘𝗥𝗦 & 𝗣𝗟𝗔𝗧𝗙𝗢𝗥𝗠𝗦 ▪ ARM Cortex-M ▪ STM32 ▪ Nordic nRF52 / nRF53 / nRF91 ▪ ESP32 / ESP8266 ▪ Raspberry Pi ▪ Arduino ▪ Microchip PIC ▪ Silicon Labs BGM220 ▸ 𝗥𝗧𝗢𝗦 & 𝗘𝗠𝗕𝗘𝗗𝗗𝗘𝗗 𝗔𝗥𝗖𝗛𝗜𝗧𝗘𝗖𝗧𝗨𝗥𝗘𝗦 ▪ FreeRTOS ▪ Zephyr RTOS ▪ Bare-metal firmware ▪ Multi-threaded systems ▪ Event-driven architectures ▪ OTA firmware updates ▪ Secure boot & encrypted firmware ▸ 𝗖𝗢𝗠𝗠𝗨𝗡𝗜𝗖𝗔𝗧𝗜𝗢𝗡 & 𝗪𝗜𝗥𝗘𝗟𝗘𝗦𝗦 ▪ UART, SPI, I2C, USB ▪ BLE, Bluetooth Classic ▪ LoRa / LoRaWAN ▪ Wi-Fi, LTE, NB-IoT ▪ RS232 / RS485 ▸ 𝗦𝗘𝗖𝗨𝗥𝗜𝗧𝗬 & 𝗡𝗘𝗧𝗪𝗢𝗥𝗞𝗜𝗡𝗚 ▪ TCP/IP, MQTT, HTTP/HTTPS ▪ TLS / mbedTLS ▪ ARM TrustZone ▪ Secure elements (Optiga, ST-SAFE) ▪ PKI systems ▪ JSON, XML, Protobuf ☁️ 𝗜𝗢𝗧 & 𝗖𝗟𝗢𝗨𝗗 𝗦𝗬𝗦𝗧𝗘𝗠𝗦 ▪ AWS IoT, EC2, S3, RDS ▪ MQTT-based architectures ▪ Industrial IoT platforms ▪ Telemetry & remote monitoring ▪ Cellular / NB-IoT / LTE devices ▪ Robotics & automation systems 💻 𝗙𝗨𝗟𝗟 𝗦𝗧𝗔𝗖𝗞 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 ▸ 𝗕𝗔𝗖𝗞𝗘𝗡𝗗 ▪ Java (J2SE/J2EE), Spring ▪ JSF, JSP, Servlets ▪ Hibernate, JPA ▪ Node.js ▪ PHP / CakePHP ▪ REST APIs ▸ 𝗙𝗥𝗢𝗡𝗧𝗘𝗡𝗗 ▪ ReactJS ▪ JavaScript, HTML5, CSS3, Bootstrap ▸ 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦 ▪ MySQL ▪ Apache Derby ▪ Database design & optimization 🛠 𝗛𝗔𝗥𝗗𝗪𝗔𝗥𝗘 & 𝗣𝗖𝗕 𝗗𝗘𝗦𝗜𝗚𝗡 ▪ PCB design (Altium Designer / KiCad) ▪ Analog & digital circuit design ▪ Hardware bring-up & debugging ▪ Sensor integration ▪ Power systems ▪ Motor control (PWM, stepper, servo, robotics) 🧠 𝗜𝗠𝗔𝗚𝗘 𝗣𝗥𝗢𝗖𝗘𝗦𝗦𝗜𝗡𝗚 & 𝗔𝗜 ▪ OCR systems ▪ Signal processing & filtering ▪ Embedded AI / ML integration ▪ Sensor data conditioning ▪ Computer vision pipelines 🧪 𝗤𝗨𝗔𝗟𝗜𝗧𝗬 & 𝗦𝗘𝗖𝗨𝗥𝗜𝗧𝗬 ▪ Secure firmware architecture ▪ Veracode static/dynamic analysis ▪ System debugging & reliability engineering ▪ Performance optimization ▪ Production-grade system hardening 🧾 𝗣𝗥𝗢𝗚𝗥𝗔𝗠𝗠𝗜𝗡𝗚 𝗟𝗔𝗡𝗚𝗨𝗔𝗚𝗘𝗦 ▪ C / C++ ▪ Embedded C ▪ Java ▪ Python ▪ JavaScript ▪ PHP ▪ MATLAB 🎯 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 𝗣𝗛𝗜𝗟𝗢𝗦𝗢𝗣𝗛𝗬 I focus on building reliable, maintainable, and production-ready systems by combining strong engineering fundamentals with real-world product experience across hardware, firmware, cloud, and software layers. If you need embedded firmware, IoT systems, cloud integration, or full stack development, I can help bring your product from concept to production.
Qian J.
$88/hr
100% Job Success
$500K+ earned
Available now
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Qian J. has worked .
Highly experienced and skilled in linux system, linux kernel and linux system programming. I had served in NXP semiconductor for 7 years, and worked in linux field for more than 15 years. Linux Kernel - Subsystem: KVM Virtualization, Filesystem, Network, USB, Linux Video - Debugging: Performance, System Analysis, Software Debugging, OOPS Embedded Linux - Frameworks: OpenWRT, Yocto, Android - Device Driver: USB, XHCI, WIFI, LTE, Network, Camera Linux System Development - System: Ubuntu, Centos, Archlinux, Raspberry pi, Orange pi - Network: VPN, VXLAN, IPTABLE, Router, Wireguard - Virtualization: Qemu, Libvirt, Virtualbox, Docker, K8s Programming Skills - C/C++ - Bash/Makefile - Android - Python
$50/hr
89% Job Success
$50K+ earned
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As a seasoned Electronics Engineer and adept PCB Designer with a decade of hands-on experience, I specialize in navigating complex multi-layer high-speed environments. My expertise lies in innovative and reliable Printed Circuit Board (PCB) design, collaborating seamlessly with Design Engineers. I adhere to industry standards, including IPC guidelines and Design for Manufacturing (DFM) principles, employing cutting-edge CAD applications for optimal outcomes. In addition to my extensive PCB Design expertise, I bring valuable experience in Firmware Development, rounding out my capabilities for comprehensive Embedded Systems solutions. Technical Expertise: Proficient in CAD platforms, including: - Cadence Allegro PCB Editor 17.2 - Mentor Xpedition Designer VX.2.5 | Layout VX.2.5 - Mentor Pads Designer VX.2.4 | Layout VX.2.4 - Orcad PCB Designer - Altium Designer 19 - Kicad 5.1.6 - Autodesk Eagle / Fusion360 - Dip Trace Core Responsibilities: My responsibilities encompass: ✅ Circuit Schematic Capture and Design ✅ PCB Design: component layout, placement, trace routing ✅ Library Development: symbols for schematics, footprints for PCBs ✅ Bill of Materials (BOM) generation ✅ Comprehensive Design Checks and Reviews ✅ NC Drill and Gerber File Generation ✅ Assembly Drawings for Manufacturing and Fabrication ✅ Seamless PCB design file conversion between CAD tools Diverse Project Experience: Engaged in varied PCB project designs, including: - Raspberry Pi Shields - Arduino Shields - Development Boards - Panel PCBs - IoT PCBs Specialized Skills: Beyond core competencies, I offer: ✅ Embedded Firmware Development ✅ 3D modeling of components and PCB modules ✅ Board simulation using Allegro PCB SI XL, thermal simulation using Altium Designer ✅ Git repository setup for collaborative PCB designs ✅ Knowledge of cybersecurity principles ✅ Strong technical writing abilities for reports and proposals Dedicated to pushing PCB design boundaries, I bring innovation and quality assurance to every project. With a commitment to excellence and extensive experience, I am a valuable asset in Electronics Engineering, specializing in PCB Design and Embedded Firmware Development.
$30/hr
100% Job Success
$10K+ earned
Available now
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I built and design the PCB, write the firmware, model the enclosure, and build the IoT app that controls it. Products I have built are live on Google Play, the App Store, and in the hands of US/EU customers right now. I'm a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐈𝐨𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with a Master's in Embedded Systems and a Bachelor's in Computer Engineering. I take products end-to-end from PCB design, firmware, enclosure, IoT mobile app, to cloud, so you get one Partner accountable for the whole stack instead of coordinating four of them. 𝐔𝐬𝐞 𝐂𝐚𝐬𝐞𝐬 𝐈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐈𝐧: ➙ Consumer electronics, smart home devices, connected appliances ➙ Audio and DSP products, Audio/Sound Devices, real-time processing ➙ Stepper motor, CNC Machines, 3D Printers, Stepper Motors, Driver, DC Generators, Energy Harvesting ➙ Smart RGB light control Systems, Hall Effect Systems ➙ Industrial IoT, Home automation, Modbus/CAN gateways, CAN telematics ➙ Medical devices, wearables, monitoring systems, Automotive ➙ Asset tracking, smart agriculture, LoRaWAN sensor networks 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 𝐌𝐢𝐜𝐫𝐨𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫𝐬 & 𝐒𝐨𝐂𝐬: STM32, ESP32 (S2/S3, A1S Dual-Core, ESP8266), Arduino (Nano, Mega, Mini, Pro, Uno), Nordic nRF52840/nRF5340, AVR (ATmega, ATtiny), PIC16/PIC18/PIC32, Raspberry Pi, Cortex-M0/M0+/M3/M4/M7/M33, Cortex-A53/A72/A76, Cortex-R4/R5/R52, Teensy 4.1, FPGA 𝐅𝐢𝐫𝐦𝐰𝐚𝐫𝐞: Embedded C/C++, MicroPython, ARM Assembly, Verilog/SystemVerilog, VHDL. FreeRTOS, Azure RTOS (ThreadX). Bare-metal, HAL, and LL driver development. STM32CubeIDE, ESP-IDF, PlatformIO, Arduino, CMake, GCC Arm toolchain. 𝐏𝐂𝐁 𝐃𝐞𝐬𝐢𝐠𝐧: Expertise in 2-12 layer boards, rigid & flex, and HDI designs using Altium Designer, KiCad, and Eagle, with a focus on high-speed signal integrity, impedance matching, thermal design, high-current routing, and RF layout including Pi-network antenna tuning. 𝐌𝐞𝐜𝐡𝐚𝐧𝐢𝐜𝐚𝐥/𝐄𝐧𝐜𝐥𝐨𝐬𝐮𝐫𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Proficient in SolidWorks, Fusion 360, and AutoCAD for injection-molding-ready designs, SLA/FDM 3D printing, IP65/IP67/IP68 waterproofing, and advanced thermal management. 𝐏𝐞𝐫𝐢𝐩𝐡𝐞𝐫𝐚𝐥𝐬 & 𝐁𝐮𝐬𝐞𝐬: I2C, SPI, UART, CAN (CANOpen, J1939), USB HID, PCIe, DMA, PWM, ADC/DAC, I2S/PDM audio, EEPROM/Flash. 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲: Wi-Fi, BLE 5.x, LoRa/LoRaWAN, NFC/RFID (MiFare, ISO14443), LTE-M, NB-IoT, 4G LTE, u-blox GNSS (M8/M10), RS485, RS232, Modbus RTU/TCP, Ethernet. 𝐈𝐨𝐓 & 𝐂𝐥𝐨𝐮𝐝: MQTT/MQTTS, HTTPS, WebSockets, TLS 1.3, JSON-RPC. AWS IoT Core, Azure IoT Hub, Google Cloud IoT, Blynk, ThingsBoard, Tuya. 𝐀𝐩𝐩𝐬 & 𝐈𝐧𝐭𝐞𝐫𝐟𝐚𝐜𝐞𝐬: Flutter, React Native, React.js, Vue.js, Node-RED, Firebase, PWAs. Qt for Embedded, PyQt5. OLED, TFT, IPS, E-Paper, LED Matrix, 7-Segment, rotary encoders. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Secure Boot, AES, ECC, OTA updates. Design-for-certification for CE, FCC, EMI/EMC, ESD (IEC 61000-4-2), UL, ISO 9001/13485. 𝐌𝐲 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: ➙ Clear weekly progress updates, often including demo videos, schematics, firmware commits, and simulation results. ➙ Version-controlled deliverables (Git) and meticulously documented, clean code. ➙ Transparent communication regarding progress, challenges, and potential risks. ➙ Strong research-driven approach focused on solving technically difficult problems efficiently. ➙ Open to starting with a paid pilot project before committing to a larger scope. 𝐋𝐞𝐭'𝐬 𝐓𝐚𝐥𝐤 𝐈𝐟 𝐘𝐨𝐮 𝐍𝐞𝐞𝐝 A reliable partner to design a new product from scratch, rescue a stalled hardware project, and control systems, port firmware between MCU families, add IoT/cloud connectivity to an existing device, or build the mobile app and backend that makes your hardware actually useful. Invite me to your Job or send me a message with your product concept, current stage, and what's blocking you.
Petro L.
$199/hr
100% Job Success
$200K+ earned
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Petro L. has worked .
I am a Senior Embedded Linux Programmer and IT/Infrastructure Consultant with nearly 40 years of overall development experience. I specialize in getting tough hardware and networking projects off the ground—or rescuing existing projects that have hit a wall. Because my background spans the entire stack—from bare-metal custom Linux kernels to advanced enterprise server configurations—I can troubleshoot and build systems that most single-discipline developers cannot. Here are my core areas of expertise: • Embedded Linux & BSP: Custom firmware, kernel drivers, and deep optimization for SoC boards (Raspberry Pi, Orange Pi, NanoPi, etc.). I have extensive experience with Buildroot, Yocto, MAC-PHY communication, and precision timekeeping (PTPv2/IEEE 1588v2). • Networking & Telecom: 7+ years building 4G/LTE protocols (MAC-level, EPC, QoS). I regularly handle BGP routing issues, VPN implementations (IPsec/StrongSwan), and complex traffic convergence. • Edge AI & Computer Vision: Building optimized pipelines for video surveillance, real-time object tracking, and deploying AI models directly on edge devices. • Infrastructure & Email Systems: Advanced Postfix customization. I routinely design secure email obfuscation workflows, generate robust SPF/DKIM records for domains, and manage complex DevOps tasks like cloud migrations and remote work infrastructure. Zabbix and Grafana infrastructure monitoring, custom agents, alerting and visualization. Past Successes: • Led the full-lifecycle development of the MaxBridge 4G solution, successfully deployed across four countries. • Core BSP Engineer on the highly successful Carsifi project. • Rework old systems with new core elements, incorporating existing hardware protocols. I don't just write code; I solve system-wide problems. If you need someone who understands exactly how your hardware talks to your network, send me a message and let's discuss your project.
$20/hr
$100+ earned
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You have a hardware or IoT project that needs to work — reliably, on time, and without hand-holding. That is exactly what I deliver. I am an electronics engineer with 10+ years of hands-on experience in embedded systems, IoT development, and PCB design. I founded and lead GENERAL INVASION SARL, where my team and I have designed and deployed complete electronic systems for real-world use — not just prototypes that sit in a drawer. What I have shipped: → IoT cloud platform with 45,000+ active users (monitoring, device control, real-time data) → Electronics learning platform with 13,000+ students across West Africa → Electronic devices, PCBs, and embedded systems designed and manufactured for clients in industry and research My technical stack: • Microcontrollers: ESP32, STM32, ATMEGA328P, Arduino, Raspberry Pi • PCB Design: KiCad, EasyEDA, Proteus • Firmware: C/C++, Python, FreeRTOS, MQTT, Modbus/RS485 • IoT: AWS IoT, LoRa/LoRaWAN, SCADA, sensor integration, real-time dashboards • Specialties: instrumentation, signal acquisition, industrial interfaces, low-power systems What you get working with me: ✔ Clean, well-documented code and schematics ✔ Deliverables that are testable and reproducible ✔ Clear communication throughout the project ✔ Available 30+ hrs/week, responsive across US and EU time zones If you need someone who understands both the hardware and the software — and can take your project from schematic to working system — let's talk.
Firas B.
$45/hr
100% Job Success
Available now
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Firas B. has worked .
Are you looking for an expert engineer who consistently delivers top-quality results? With a proven track record of 100% client satisfaction and over Seven years of hands-on experience, I am your go-to professional for end-to-end embedded systems solutions. What Makes Me the Perfect Fit for Your Project? Advanced PCB Design Expertise: From concept to production, I specialize in designing high-performance, cost-effective, and scalable PCBs for any application. Precision Firmware Engineering: Reliable, optimized, and bug-free firmware tailored to ensure your system’s seamless performance. IoT Integration & Real-Time Connectivity: Advanced device-to-cloud and device-to-device communication using WebSockets and other modern protocols for real-time data monitoring, control, and analytics. Mobile App Development: Engaging, intuitive, and professional cross-platform mobile apps (Android & iOS) for system management, giving users full control from anywhere. Core Expertise & Skills: ✔️ Embedded Systems Design: Complete hardware-software solutions for complex technical challenges. ✔️ IoT Development: Smart device integration and real-time communication. ✔️ Prototyping to Production: Full product lifecycle management. ✔️ Cross-Platform Integration: Hardware, firmware, and software combined seamlessly. ✔️ Real-Time Systems: Fast, reliable, and scalable solutions for critical applications. Why Hire Me? ✅ 100% On-Time Project Delivery: Precision, efficiency, and attention to detail — always delivered on schedule. ✅ Expertise That Delivers Results: Advanced technical knowledge and innovative solutions tailored to your needs. ✅ Professionalism & Quality Assurance: Commitment to excellence in every aspect of your project. ✅ Strong Communication & Collaboration: I prioritize transparent communication and a client-first approach to ensure project success. ✅ Proven Experience: Two years of expertise in PCB layout, firmware development, IoT systems, and more. Industries Served: -IoT & Smart Devices -Medical Equipment -Consumer Electronics -Industrial Automation -Renewable Energy Systems I am passionate about innovation and problem-solving, turning challenges into solutions that exceed expectations. From the initial concept to final deployment, I deliver professional, reliable, and scalable solutions tailored to your unique requirements. Let’s Build Something Incredible Together! Ready to bring your project to life with top-tier expertise and unmatched dedication? Contact me today to discuss your goals and how I can help.
Haris R.
$20/hr
95% Job Success
$100K+ earned
Available now
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Profile Overview: Are you seeking a reliable partner to transform your innovative ideas into robust IoT, mobile, or web applications? With over a decade of experience, I specialize in delivering end-to-end solutions that drive business growth and operational efficiency. What I Offer: • IoT & Embedded Systems: Development of real-time dashboards for monitoring and analytics. Integration of AI-driven insights for predictive maintenance and decision-making. Expertise in firmware development using C, C++, and Python. Proficient in communication protocols like Bluetooth and AWS IoT. Implementation of automated alert systems for critical event notifications. • Mobile & Web Development: Creation of high-performance Android and iOS applications using Flutter. Design of responsive web platforms utilizing React, HTML, CSS, and JavaScript. Development of secure backend systems with Node.js. Seamless integration of RESTful APIs for efficient system communication. • AI Automation: Design and deployment of intelligent automation workflows using machine learning and AI tools. Integration of NLP, computer vision, and predictive models to optimize business processes. Development of smart bots and AI agents for task automation and data processing. Streamlining operations by combining AI algorithms with custom software solutions. • Software Engineering & Cloud Solutions: Full-stack development ensures cohesive front-end and back-end integration. Deployment of scalable and secure cloud infrastructures on AWS. Implementation of CI/CD pipelines adhering to Agile and DevOps methodologies. Incorporation of AI & machine learning for enhanced application intelligence. Robust cybersecurity measures to protect data integrity and privacy. • Hardware & PCB Design: Advanced circuit and PCB development using Altium, Eagle, and KiCAD. Hands-on experience with microcontrollers like ESP32, Arduino, Raspberry Pi, and STM. Integration of sensors for real-time monitoring of environmental parameters. Design of energy-efficient hardware solutions for prolonged operational life. Comprehensive prototype development and rigorous testing for reliability. Proven Track Record: Over the years, I've completed 500+ projects, delivering tangible results across various industries, including healthcare, manufacturing, and logistics. My commitment to excellence ensures that each solution is tailored to meet specific client needs, driving innovation and efficiency. Let's Collaborate: Whether you're looking to develop a new IoT platform, enhance your mobile application's performance, or design a scalable web solution, I'm here to bring your vision to life. Let's discuss how I can contribute to your project's success. Skills: • Programming Languages: C, C++, Python, JavaScript • Frameworks & Tools: Flutter, React, Node.js • Cloud Platforms: AWS IoT • Communication Protocols: UART, SPI, I2C, CAN, USB, Ethernet • Version Control: Git
$25/hr
56% Job Success
$700+ earned
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I build production-grade embedded firmware for STM32, ESP32, and ARM Cortex-M microcontrollers that actually survives in the real world. If you need real-time systems, MQTT communication, custom PCB design, or hardware that talks reliably to the cloud, I'm your engineer. Core Technical Expertise: Microcontrollers: STM32 (F1/F4 series), ESP32, ESP8266, AVR, ARM Cortex-M, STC89C52 Firmware & Programming: Embedded C/C++, FreeRTOS, Zephyr RTOS, interrupts, timers, GPIO, PWM, ADC, DMA, memory mapping, bootloaders, low-power modes Communication Protocols: UART, SPI, I2C, USB, CAN, One-Wire, Ethernet, TCP/IP Wireless & IoT: Wi-Fi, BLE, MQTT (EMQX, Mosquitto, MQTTX), HTTP/HTTPS, TLS/SSL, Blynk, ThingSpeak, LoRa, Matter Hardware Design: PCB layout (EasyEDA, KiCad), schematic capture, AC-DC power supplies, current sensing (HLW8032, ACS712), thermal management, protection circuitry, signal integrity Debugging & Tools: JTAG/SWD, oscilloscope, logic analyzer, GDB, static analysis, Git, CMake, STM32CubeIDE, ESP-IDF, PlatformIO, Keil uVision Real-World Projects That Matter: Built a custom MQTT broker (Mosquitto + Node.js) for payment devices – implemented real-time telemetry, device status monitoring, connection tracking, and MySQL database logging with TLS security. This gave me end-to-end understanding of IoT cloud integration and device-to-server pipelines. Designed an intelligent home security system deployed in a real house for months – integrated ESP32-CAM with facial recognition, laser intrusion detection, ultrasonic sensors, and adaptive power management that saved 20% energy. System included cloud connectivity, real-time alerts, and sensor fusion with I2C/SPI/UART interfaces. Completed 27+ ESP32/ESP8266 projects including GPS trackers, LVGL dashboards, power monitoring, motor control, and industrial automation. Experienced with real-time constraints, interrupt handling, and low-power optimization for battery-powered devices. As a Lab Instructor at a University, I've guided 250+ students through Digital Logic Design, embedded systems, and firmware debugging – so I'm excellent at explaining complex technical concepts clearly. How I Work: I don't over-engineer. I focus on clean code, thorough documentation, robust architecture, and maintainable solutions. Whether you need proof-of-concept development, production firmware, legacy code debugging, or full hardware-software integration, I deliver reliable results on schedule. Looking for an embedded engineer who actually ships? Let's talk.