Hire the Best Internet of Things Specialists
in Vietnam

Hi. Thank you for your interest. I am a Mechatronics Engineer specializing in IoT, Robotics, and AI. I have experience developing IoT Cloud systems, Smart Home solutions, Digital factories, Mobile Robots, Humanoids, Drones, and more. Some of the commercialized products I have developed include EVSE (Electric Vehicle Supply Equipment) and smart switches. My key skills include: - Developing firmware for MCU boards such as ESP32, Arduino, STM32. - Building AI Core on Linux systems with Raspberry Pi and Jetson Nano. - Proficiency in hardware design using Altium and KiCad. - Designing mechanical models using Solidworks, Catia, and NX. I am proficient in programming languages C/C++, C#, Python, and Matlab.

I am a professional embedded software engineer with more than 12 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 End-to-End Embedded & Hardware Solutions I provide complete product development services — from concept and design through prototyping, firmware, and production — for IoT, wearables, medical, and consumer electronics. Hardware & PCB Design - Multi-layer PCB design for high-reliability, high-performance systems - High-speed design: USB 2.0, HDMI 2.0, DDR3/DDR4/LPDDR4, PCIe, NAND Flash, Ethernet (up to 10GBase-T1), PoE++ - Microcontrollers & SoMs: ARM Cortex-M3/M4 (STM32, ESP32, Nordic nRF52/53/91); custom boards for Raspberry Pi CM4, iMX8, Jetson Nano/Xavier/Orin, RK3588/3568, TI AM6254 - Power & analog: DC-DC (Flyback, Boost, Buck, LDO), BLDC/servo motor control, high-resolution ADC/DAC, audio circuits, and battery management (BMS) - DFM/DFA and EMC/EMI compliance, with certification support (CE, FCC, FDA-ready) - Tools: Altium Designer, KiCAD, Eagle, EasyEDA, OrCAD; SolidWorks and Inventor for 3D/enclosure design Firmware & Connectivity - Embedded software in C, C++, Python, and Qt, with RTOS integration and low-power optimization - Custom driver development and communication protocols: QSPI, I2C, SPI, RS485/RS232, CAN, Modbus (TCP/IP/RTU) - Connectivity stacks: BLE, Wi-Fi, NFC, LoRa/LoRaWAN, LTE, CAT-M1, NB-IoT, GSM (3G/4G) IoT platforms: MQTT, ThingsBoard, AWS IoT, Blynk; secure OTA updates, device provisioning, and cloud integration - Robotics: ROS/ROS2 for AGV, AMR, and 6-axis robot applications - Embedded UI/UX: Figma, TouchGFX, LVGL AI & Cloud Integration - Edge AI/ML deployment (Edge Impulse, TensorFlow Lite) - Predictive maintenance and anomaly detection for IoT/IIoT - Cloud integration with AWS, Azure, and Google Cloud - Cross-platform mobile apps (Android/iOS) and web dashboards for monitoring and analytics Product Leadership - Proven experience leading cross-functional teams in startup environments - End-to-end project management across design, fabrication, and procurement for cost-efficient, on-time delivery - Strong troubleshooting and research skills for electrical evaluation, testing, and design optimization 🔑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.

Hi, I'm Thao With 14+ years of experience, I specialize in: - ESP32 / nRF52/ nRF53/ nRF54/ nRF91 / STM32 PCB and Firmware (FreeRTOS, Zephyr) - BLE, Wi-Fi, LTE-M / NB-IoT connectivity - Sensor integration and low power optimization - End-to-end IoT systems (device → cloud via AWS IoT/Thingsboard/EMQX/..., MQTT/HTTP/...) 🔧 Firmware Development - Extensive experience with MCUs: ESP32, STM32, NXP, Nordic (nRF52, nRF5340, nRF54L, nRF91) - Wireless technologies: Wi-Fi, BLE, LoRa - Cellular: 4G / LTE-M / NB-IoT - SIMCOM (SIM800, SIM7000, SIM7600, SIM7020, etc.) - Quectel (BG95, BG96, EC21, EC25, EG25, etc.) - u-blox, Sierra Wireless - QuecOpen development - GNSS integration (u-blox, SIMCOM, Quectel) ⚙️ Peripherals & Systems Interfaces: UART, SPI, I2C, USB, ADC, PWM, CAN, DALI 2 Industrial communication: RS485, Modbus RTU Sensors: Temperature, humidity, pressure, gas (CO, SO2, NO2, O3), dust, pH, EC, light ☁️ IoT & Cloud Integration AWS IoT (MQTTs, HTTPs, provisioning, S3) EMQX, HiveMQ Thingsboard End-to-end IoT system integration 🧠 RTOS / Platforms FreeRTOS Zephyr RTOS Arduino framework 🔊 Other Experience Alexa-enabled devices and audio streaming systems 🛠️ Hardware Design Schematic design: Digital, Analog, Power electronics PCB design: 1–4 layers, 3D layout Tools: KiCad Manufacturing: JLCPCB, PCBWay I would be happy to discuss your project and help you build the best possible solution. Best regards, Thao Nguyen

"Very professional team, it was a pleasure working with them on design of the system." "Quynh and his team were very communicative and skillful. I was very happy to work with Quynh. Highly recommended!" "Quynh and his team are absolutely phenomenal. He was professional in all aspects of this project and I can highly recommend him to anyone seeking AWS assistance." "Quynh and his team are great! Always available, always providing the right results. They even worked during their New Years' celebration, when my application had issues on production. Amazing guys!" 📞 Invite me to your job if you would like a FREE 15-minute initial consultation! 📞 Our core services: ✅ Building IoT Platforms (Mobile / Web) ✅ Tech Stack Selection for IoT Platforms ✅ IoT Consultancy ✅ Cloud-based IoT Solutions ✅ Edge Computing, IoT Gateways, and Hybrid Solutions ✅ Building IoT, computer networks, infrastructure, and system monitoring solutions ✅ End to End LoraWAN Solutions ✅ Home Automation, Smart Cities, Industrial Automation ✅ IoT Data Analytics ✅ Integration of Blockchain in IoT. ✅ Integration of AI in IoT. ✅ Firmware Development for IoT Devices and Gateways 🌟 Expertise 🌟 Internet of Things Platforms 📌 Monolithic and Microservices Deployment 📌 Infrastructure monitoring and IT Support 📌 Integration with MQTT, HTTP, LoRaWAN, The Things Network, Sidewalk, LTE-M, NB-IoT, WebSocket 📌 Custom and Interactive Dashboards 📌 Tenants and Customers Management 📌 Device Provisioning & Claiming, OTA, MQTT Gateway Cloud IoT ✔️ AWS IoT Core (Fleet Provisioning, LPWAN, FleetHub), AWS Kinesis, Lambda, Greengrass, AWS IoT Analytics, Quicksight, SiteWise ✔️ Azure IoT (IoT Hub, Event Hub, Provisioning, Stream Analytics, Azure functions, API) ✔️ GCP (Cloud Pub/Sub, VertexAI) ✔️ Experience in designing data pipelines and implementing scalable architectures for IoT. Development Boards ✔️ Raspberry Pi ✔️ Arduino Boards (UNO, Mega, IoT boards, MKR Series) ✔️ Espressif (ESP8266, ESP32 Series, NodeMCU) ✔️ Nordic (nRF9160, nRF52840, nRF52833) ✔️ STM32 ✔️ RAK, Sensecap, etc. Communication Protocols ✔️ MQTT (Mosquitto, EMQX, SSL/TLS, ACL, MQTT Security), AMQP ✔️ SNMP (Network Monitoring), ICMP ✔️ WiFi, BLE, ZigBee, Zwave ✔️ LoraWAN: 📌 Gateways And Sensors Onboarding. 📌 Installation and Configuration of LNS (Chirpstack, The Things Stack, Helium, LORIOT, AWS) 📌 Writing Uplink and Downlink Decoders for Sensors 📌 Use Cases: Smart Cities, Food Security, Smart Agriculture, Parking Systems, Air Quality Monitoring, Smart Water Metering, Energy Metering 📌 Worked with a variety of Gateways & Sensors i-e MultiTech Conduit, Kerlink Wirnet, Mikrotik, Milesight, Laird, Dragino, Senstick, Semtech Monitoring Solutions ✔️ Mobile application (Swift, Kotlin, Flutter, React Native) ✔️ Matter integration ✔️ Web application (ReactJS, VueJS, NextJS) Backend Integration 📌 Monolithic and Microservices Architecture (ECS, K8s, K3s) 📌 Languages: Python (Django, Flask), Typescript (NestJS, Serverless), Golang Infrastructure 📌 Terraform 📌 CloudFormation

🔍 Penetration Testing Specialist 🐞 Hallo! I am a dedicated Penetration Testing Specialist on a mission to safeguard your digital assets and fortify your online presence. I approach cybersecurity from a results-driven perspective and have a track record that includes an excellent 80% vulnerability detection rate. Focus on Vulnerability Assessments & Penetration Testing 👨‍💻 (VAPT) 🌐 Web Application Penetration Testing 📱 Mobile Application Penetration Testing 🖥️ Desktop Application Penetration Testing 📝 CMS Security Testing 🔐 API Security Assessment ☁️ Cloud Penetration Testing 📶 Network Segment Testing 📡 Wireless Network Security Testing 🤖 IoT (Internet of Things) Security Assessment 💬 Social Engineering Assessments 💥 Red Teaming 📖 Security Awareness Training 🛠️ Customized Security Solutions Why Choose Me? 🛡️ Proven Methodology: Count on my effective testing approach to shield your digital space from potential threats. 💡 Peace of Mind: Relax, knowing your business operates securely, efficiently, and with top-notch protection. ⚔️ Competitive Services: Black-Gray-White Penetration Testing, API Security Assessment, CMS Security Testing, Cloud Penetration Testing and more... I've got your security needs covered. 🎓 Obtained Certificate: Burp Suite Certificate Practitioner (BSCP) + Offensive Security Certified Professional (OSCP) + CREST Registered Penetration Tester (CRT) My Approach: 1️⃣ Discovery & Scoping: Pinpoint the weak links in your digital defenses. 2️⃣ Penetration Testing & Vulnerability Analysis: Dive deep into the battle, uncovering vulnerabilities. 3️⃣ Reporting & Retesting: Receive detailed reports and retesting to confirm your security. ⭐️Mitigation & Enhancement: Work together to fortify your defenses. ⭐️Free Retesting: Ensuring you stay impenetrable. What are you waiting for? Ready to Elevate Your Security 💀💀💀? 👉 Propel Your Business To The Next Level. Let's connect for a comprehensive cybersecurity assessment.

I am an Embedded Programmer, Linux/ARM BSP/firmware engineer (10+ years). ◉ Prototype Development kit: Raspberry Pi, Beaglebone, IMX6 and IMX8, Quectel AG35 EVB, NanoPi Air, OrangePi Win, ESP32, Arduino UNO R3, STM32, Variscite VAR-SOM-MX93 ◉ Have solid knowledge of the standard interface such as I2C, SPI, UART, CAN, RS232, USB Host/Device, Ethernet, SDCard ◉ IoT devices with wireless connectivity such as LTE, BLE, WIFI, GPS, Lora(RFM95CW) ◉ Modem Quectel: Automotive AG35, 5G RM520N ◉ Good experienced with Audio Codec chips: TI(TLV320AIC3109), ADAU1961WBCPZ ◉ Solid experience with U-boot porting, BSP, Linux kernel, Device drivers development/optimization for the small Linux SoC boards. ◉ Yocto, OpenWRT, Buildroot ◉ OTA: swupdate, mender, rauc ◉ Cybersecurity ◉ Chipset: Allwinner A64, Allwinner H3, Allwinner T113, NXP i.MX6, i.MX8, Quectel AG35, Qualcomm MDM9x07, STM32L4, ◉ Language: C/C++, Python, Bash scripting, Golang ◉ Framework: gstreamer, boost Our key goal is to deliver high-class products and services to our clients. A combination of long-term experience, and perfect communication allows us to work with clients all over the world.