Hire the Best Technology Freelancers
in Vietnam

Hello! I'm Tuan, a fourth-year student at Hanoi University of Science and Technology, majoring in Mathematics and Informatics. With a strong passion and curiosity for technology, I'm always seeking opportunities to apply and enhance my skills in this field. Throughout my academic journey, I have accumulated a deep understanding of Mathematics and Informatics, from theory to practical applications. I have participated in and completed numerous research projects and real-world assignments at university, ranging from software development to optimization problem-solving. This has helped me develop effective analytical, problem-solving, and programming skills. In addition to technical expertise, I also have experience working in teams and communicating effectively. I'm always ready to collaborate with colleagues to achieve the best results, believing that teamwork is key to success in any project. I'm particularly interested in applying my skills to solve real-world problems and contribute value to the community. Therefore, I'm seeking opportunities to join exciting and challenging projects where I can apply my knowledge and skills to contribute to their development and success. If you're looking for an enthusiastic freelancer with deep knowledge and strong technical skills, I'm eager to collaborate with you to deliver the best solutions for your project. Thank you for taking the time to read my introduction. Please feel free to contact me if you have any questions or would like to discuss ideas for your project. Best regards, Tuan

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.

Nanotechnology researcher having experience of numerous advanced material production such as graphene-based composite, copper-based composite, silica-based composite... Also a productive freelancer with bunch of skills.

I'm an experienced global talent sourcer. I have deep experience working as a senior Linkedin recruiter, sourcer, Google searching and recruiting to help clients in the technical and non-technical industry. I have over 7+ years of sourcing and recruiting experience with skills in research and finding quality candidate profiles for startup companies in the US, Canada, Europe, UK, Australia, Africa. I always put quality is first. I am strong in sourcing for technical recruiting and non-technical recruiting. I am fluent in sourcing for many technical roles such as Backend, Frontend, Mobile, DevOps, Embedded, ...And also non-technical such as Sales, Account Executive, Account Manager, HR, Recruiter, Marketing, Real Estate, Fintech, Accountant, Healthcare... I use the following sites for sourcing and recruitment purpose: LinkedIn, Dice, Indeed, ZipRecruiter, Github, StackOverflow, Dribble, Behance, ...etc Moreover, I am fluent in Lead Generation, Data Entry, Web Research and find the personal email, work email, phone numbers of High-level, C-level, Founder, Co-Founder, HR, Operation Manager, Recruiter, President, Owner... I use tools, sites for search email: LinkedIn sales navigator, Gem, Kendo Finder, SalesQL, LeadLeaper, Hunter.io, Connectifier Social Links, CrunchBase, Find2Email, Scout by LeadIQ, Clearbit Connect, Rocketsearch, Contactout ...etc My skills: • Linkedin Sales Navigator, Filter • Linkedin Sourcing, Recruiting • Linkedin Lead Generation • Linkedin Leads list building • Finding emails & Phone numbers • Company List Build Up • Contact List Building • LinkedIn research, Google Research • Data Entry • Google Search, Spreadsheet, Doc... I believe that my skills and experience could make an excellent fit for your request. I am always open to learning new tools if there are different ones you prefer to work with. I can take on new work immediately and look forward to speaking with you about your needs! Daily tasks: - Receiving Job Descriptions (JD) from clients. - Analyzing the JD. - Searching for candidates that fixed JD. - Finding information of candidates. - Making a list and handling clients. Connect me via: - Email: tranhoainam.job@gmail.com - Phone: (+84) 344.26.5154

I am an experienced and passionate freelancer in the field of digital marketing, with standout skills in Copywriting, image and video editing, as well as marketing planning. With a creative mindset and the ability to manage projects remotely, I am always focused on delivering optimal value to advertising campaigns and brand building. I am flexible, self-managing, and ready to collaborate on diverse projects to leverage my strengths. Proficient in using Adobe Premiere and Adobe Photoshop Have strong writing skills Capable of developing strategies and planning marketing campaigns

SUMMARY A developer with 7 years of experience working with both of the outsourcing and product company. I have built a lot of websites, applications and programs for the various companies. Furthermore, I already worked on many projects as a freelancer before.