Hire the Best Prototype Designers
in Vietnam

Thank you for visiting my profile. My name is Ta Duy Long, I have extensive experience in electronic hardware and firmware development over 6 years. My expertise and skills: 1. Electronic Schematic and PCB Design - Mastering for vavious design tools such as Altium Designer, Kicad, Eagle and EasyEDA - Qualfied design for complex digital and analog circuits - EMC/EMI compatible PCB design and ceritifications 2. Firmware development for various MCUs and Embedded System - Robust Firmware programming using C, C++, Python - Familar with various Wire/Wireless communication protocols - AI embedded system firmware development 3. Strong problem solving skills and keen eye for technical details - Solving skills for cutting edge technologies - Fixing issues and optimiztion for existing design I always provide the qualified working result and kind support to 100% project success.

Hello! My name is Manh, professional hardware engineer My job is design hardware circuit, test circuit, program for electronic product and program software on PC to manage/communicate with circuit boards. Just give me your requirements/product specification. Then we can discuss about the deadline, price and other features. I have more than 7 years experience in design hardware for IoT Products, Consumer Products and Telecom Products. So I think i can try my best to complete your project with best result Below is my work flow in hardware design: - Receive your requirements, discuss to have final product/circuit specs - Design block diagram for circuit: need to very detail, it will decide what part will be used in project - Design schematics: follow block diagram to design schematic for product - Design PCB Layout: with requirement about Mechanical Design and Industrial Design, i will do the PCB Layout the fit with your MD that archive best performance - Extract production data: BOM, CAD, GERBER, DESIGN, ASSEMBLY GUIDELINE, IMPEDANCE CONTROL REQUIREMENTS, ... Something about my experience: - About microcontroller: STM32F0/F1/F2/F4/F7, MSP430, MSP432, ATMEGA, ATSAM, PIC, ... - About SoC and MPU: RK3399, Allwinner A10, RTS3902L/RTS3902, RTL8188/8192, ... - About dev board: Arduino, RPi, Teensy, ... - About Wireless MCU: ESP8266, ESP32, CC2530, CC2538, DA14580/14583, CC2540/41, nRF51822/nRF52840, CC1310, ... - About Sensor: CMOS Image Sensor, light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, .... - About wireless communication: WiFi, BLE4.0/4.1/4.0, Lora, Zigbee, Sub1GHz, ... - About GPRS/3G/LTE Module: SIM800C/H, SIM900A, SIM908, SIM5320, SIM5360, Quectel MC60/M95/UC15/UC20/EC20, Sierra HL8548, SIM7600E. - About highspeed PCB Design: DDR3/DDR4, SATA, HDMI, USB2.0/3.0/TypeC, eMMC, ... - About Mass Production: I can help you prepare production data that help you do the mass production. I also have experience in mass production process for IP Camera and Home Gateway with very big quantity, so i will know how to design for manufacturing with your product, design mass production process, etc Some of my product that I have designed and released to the market: - Home IP Camera: using SoC with DDR3-RAM, livestream via Ethernet and WiFi, have light sensor, IR-Led Array, IR Cut control, CMOS Image Sensor, Flash, USB and MicroSD Card - Smart Home Product: Design Home Gateway with Ethernet, WiFi, Zigbee and TFT LCD, ... Design Smart Switch with capacitive touch, Zigbee communication, Single Phase Power Meter, 220VAC/110VAC load control, ... - Tablet board: using RK3399 SoC, DDR3, eMMC, NAND Flash, Touch Screen, LTE Module, Printer driver, ... - Smart Water Meter: With BLE, WiFi, MCU from TI, LCD 7 Segment - Tracking Device: Using 3G with GPS, this device is used for personal tracking ... and a lot of other products ... I hope to work with you, to help you complete your project and release your product to the market

Hi! I'm Phong, a highly-rated UI/UX designer on Upwork with over 3 years of experience in UI/UX design, Web Design, Mobile App Design, Figma, SaaS dashboards, landing pages, UX/UI, and React prototyping. I help startups and businesses turn ideas into clean, intuitive, and high-converting digital products. My focus is not just on beautiful UI, but on creating user experiences that improve engagement, usability, and conversion rates. Feedback from customers and businesses: "Phong was extremely helpful in clarifying the design process needed for my website and was proactive in seeking to understand the projects requirement's. Would highly recommend for anyone looking to clarify a projects needs." "Had a great experience working with Phong! He created really clean and modern Figma designs for both our mobile app and web platform. Everything felt smooth, intuitive, and well thought out — especially the user flows." "Phong is an exceptional UI/UX designer who took our project to a level we didn't think was possible. His ability to understand our business and translate our ideas into a design solution we truly love was incredible." My UI/UX Design Services: • SaaS UI/UX Design • Web App & Dashboard Design • Mobile App Design (iOS & Android) • Landing Page & Website Design • Figma UI Design & Prototyping • Branding & Design Systems What I bring as a UI/UX Designer: • User-centered design with a strong focus on UX strategy, user flow, and conversion optimization • Experience designing B2B & B2C platforms, SaaS products, dashboards, and mobile applications • Strong wireframing and prototyping skills in Figma — helping you visualize and test ideas before development • Clean, modern, and scalable UI design systems for long-term product growth • Clear communication, fast response, and reliable delivery Keywords: UI/UX Designer, SaaS Designer, Product Designer, Figma Designer, Web Design, Mobile App Design, Dashboard Design, UX Strategy, Landing Page Design If you're looking for a UI/UX designer who understands both design and business, I’d love to help you build a product that not only looks great but also performs. Let’s work together UPD: June 3, 2026

6+ years in UI/UX & Visual Design, specialized in Design System, Brand Identity, Dashboard, and SaaS Web App. I help startups and businesses build consistent, scalable, and intuitive interfaces through well-structured design systems and thoughtful user experience design. 👉 What I Do Best ✔︎ Design System (tokens, components, documentation, scalability) ✔︎ Brand Identity Design (logo, visual language, typography, color, guidelines) ✔︎ Dashboard & Data Visualization ✔︎ SaaS UI/UX (flows, wireframes, high-fidelity UI, prototyping) ✔︎ Framer Website (modern, clean, responsive, fast to ship) ✔︎ Responsive Layout (auto-layout, mobile first) 👉 Why Clients Work With Me ✔︎ Clear communication ✔︎ Minimal, clean visual style ✔︎ Pixel-perfect attention to detail ✔︎ Ability to turn ambiguous requirements into structured, usable interfaces ✔︎ End-to-end thinking: UX → UI → System → Documentation → Handoff 👉 Tools ✔︎ FigJam (brainstorm ideas) ✔︎ Figma (design visuals) ✔︎ Framer (build websites) ✔︎ Jira (manage tasks) ✔︎ Zeroheight / Storybook (design systems) ✔︎ Illustrator (create vectors, illustrations) ✔︎ Photoshop (create images) ✔︎ CapCut PC / Canva (create clips, edit video) If you're building a system, a brand, or a product that needs clarity + structure + aesthetic consistency, I can help you deliver it confidently.

I've been designing digital products since 2010 — growing from a UX/UI designer into a Creative Director, and picking up the ability to code along the way. That mix of strategy, design, and technical fluency is what I bring to every project. SaaS products are my sweet spot, though I've worked extensively across mobile apps and e-commerce too. I'm most useful in the early stages — understanding the problem, mapping user flows, running competitive research, and generating ideas fast. From there I move into Figma to build out wireframes, prototypes, and production-ready designs with proper design systems that your frontend team can actually work with. Speaking of which — I can code, so handoff is smooth. No miscommunication, no back-and-forth over specs. I know what's buildable and I design accordingly. A few things clients tend to appreciate: I'm fast, I'm good at unsticking hard UX problems, and I don't need a lot of hand-holding to get moving. If that sounds like what you need, send me a message and tell me what you're building.

Hello! I’m Ben, a hardware and firmware expert with 8+ years of experience in designing hardware, programming embedded systems, and developing high-performance software solutions. My goal is to provide innovative, reliable, and high-performance solutions that meet your needs. With a strong track record on Fiverr (Level 2, 5 stars) and Upwork (Top Rated Plus, 5 stars), I have successfully delivered top-tier service to over 100 clients. What I Offer 1. End-to-End Embedded & Hardware Solutions - Advanced PCB Design & Hardware Development: Expertise in schematic capture, PCB layout, and multi-layer board design for reliable, high-performance, and manufacturable products. Experienced with KiCad, Altium, OrCAD, and Eagle. - High-Speed Design: Strong experience in 1–12 layer PCBs, including DDR3/DDR4/LDDR4, PCIe, USB (2.0/3.0/3.1/3.2), HDMI and 10/100/1000/10Gbase-T1 Ethernet. - Microcontrollers & SoMs: Firmware and hardware development for ARM Cortex-M3/M4 (STM32, ESP32, Nordic nRF52/53/91 series); custom boards for Raspberry Pi CM4/CM5, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126, Allwinner, Zynq-7010. - Power & Hardware Integration: Experience in DC-DC, AC-DC, Buck, Boost, and Flyback converters, along with hardware design involving audio, RF modules, PA, LCD, filters, RFID, touch screens, and LVGL-based interfaces. - Prototype, Testing & Validation: Full support for board bring-up, debugging, validation planning, and functional testing to ensure hardware works reliably in real-world applications. - Manufacturing & Prototyping Support: Preparation of BOM, Gerber, and manufacturing-ready files, with hands-on support for prototype production and manufacturing through JLCPCB and PCBWAY. 2. Robust Firmware Development - Languages & Development: Strong embedded firmware development in C/C++, Python with experience using Visual Studio Code, STM32CubeIDE, Arduino IDE, ESP-IDF, and Segger. - Communication Protocols: Proficient in USB, UART, I2C, SPI, I2S, RS232, and RS485, enabling reliable communication across embedded systems and connected devices. - Wireless & Connected Systems: Experience with BLE, BLE Mesh, ZigBee, UWB, LoRa, NB-IoT, 4G LTE, Wifi, WiFi Mesh, and NFC for IoT and wireless product development. - Sensor: light sensor, CO, Smoke Sensor, Dust Sensor, Air Sensor, pH sensor, IMU sensor, Accelero, Gyro sensor,... - UI/UX for Embedded: Figma, TouchGFX, LVGL for STM32, ESP32, Raspberry Pi. - Motors Control: BLDC, Stepper, Servo, DC Motors - Robotics: Expertise in ROS/ROS2 for applications like AGV, AMR, 6-axis robots. Some of my product that I have designed and released to the market: - Home IP Camera: SoC-based design with DDR3 RAM, Ethernet/Wi-Fi streaming, CMOS image sensor, IR LED array, IR-cut control, USB, and MicroSD - Smart Home Products: Home Gateway with Ethernet, Wi-Fi, Zigbee, and TFT LCD; Smart Switch with capacitive touch, Zigbee, power metering, and AC load control - Tablet Mainboard: RK3399-based board with DDR3, eMMC, touch screen, LTE. - Smart Water Meter: BLE/Wi-Fi design with TI MCU. - Wearable Devices: Low-power wearable designs with wireless connectivity, sensors, and battery management - High-Performance ESC for Drones: Real-time motor control design for efficient and stable drone operation - Custom SBC with AI Module: Raspberry Pi-based SBC solutions with integrated AI capabilities And a lot of other products. With our experience and expertise, I’m confident I can provide tailored solutions to help you complete your project and release your product to the market . I look forward to the opportunity to work with you.