Hire the Best Electronic Designers
in China

Who AM I ? I am Caleb. Below is my brief Elevator pitch. WATCH OUT! Hi My precious Customers, I am New to upwork, you may worry that without customer reference and work history in upwork of this guy, your project may get sucks if hiring this guy. But believe me, I have been in product design and sourcing for 10 years and in my previous full-time job, my boss has a good impression of me and highly recommend me to his connects and friends cause he thinks I am trustworthy guy. So don't worry, You can provide your projects and have a try, If there is any dissatisfaction during the service, I can guarrantee I will pay back the money you have paid. 👍 About Me: Successfuly designed and manufactured 15 products to clients, including Fortune 500 & Start-ups. 💪MY ABILITIES Product Design(3D CAD, 2D Engineering Drawing, Mechanical Design, DFMA,) Factory sourcing in Pearl River Delta in Guangdong Province 👍Rapid Prototyping CNC Sheet Metal(Laser Cutting, Bending, Welding, Stamping, Punching) 3D Printing Prototype/Soft Molding 👍Production(NPI & MP) CNC(Machining, Turning) Sheet Metal(Laser Cutting, Bending, Welding, Stamping, Punching) Plastic Injection Molding, Plastic Blow Molding, Silicone Molding Die Casting, Alumium Extrusion, Stainless Steel Etching Surface Treatment(Anodizing, Powder Coating, Electroplating, Painting, Silkscreen Printing, Laser Engraving) 👍Quality Control Factory facility/quality audit Sample Review 👍Others Factory sourcing International Shipping Technical Translation/Translator 💬Let's chat and discuss about your project!

With 10+ years of UX and product design experience, I help product teams make better design decisions before development through focused, task-based UX services: • UX rapid prototyping — turning product ideas into testable wireframes and interactive Figma prototypes • UX audits and redesign recommendations — identifying usability issues and providing prioritised, actionable improvements • Accessibility design reviews (WCAG-based) — reviewing Figma designs against accessibility best practices and providing actionable recommendations before development • Usability testing and product feedback — testing key flows and translating findings into clear next steps • Customer journey mapping — visualising end-to-end experiences, pain points, opportunities, and service touchpoints • Figma cleanup and UI polish — organising files, improving consistency, refining components, and preparing designs for handoff • Chinese UX localisation — adapting apps, websites, and product content for Chinese-speaking users with attention to language, context, and usability • User interview guides and survey design — creating structured research materials to help teams learn from users • UX research synthesis — turning interviews, survey results, and user feedback into themes, insights, and product opportunities I have experience working in multinational environments and collaborating across product, business, and engineering teams. If you need focused UX support for a specific task—or a reliable design partner to help define, improve, or validate your product before development—I’d be glad to help.

I'm a product mechanical engineer in robot, consumer, networking and medical device, I'm familiar with plastic product, sheet-metal product, CNC product and die-casting product design and these products manufacturing process. I also can provide engineering analysis, such as tolerance analysis, thermal design and analysis, finite element analysis(static/shock/random vibration/fatigue).I'm based in south of China, I can provide manufacturing support if you need.

I am an experienced mechanical designer specializing in small electronic product enclosure / plastic casing design. Proficient in PTC Creo Parametric, SolidWorks, AutoCAD. ✅ Services I provide： • 3D modeling & assembly design for electronic housing • Snap-fit / screw-fit plastic enclosure design • DFM for injection molding & 3D printing • Reverse engineering from scan data & pictures • 2D engineering drawing, STEP / STL / DXF export • Material selection, wall thickness, waterproof structure consultation I closely cooperate with electronics engineers, reserve space for PCBs, batteries and connectors. Optimize structure for assembly, prototyping and mass production to avoid redesign costs. I deliver editable source files and support revisions during prototype testing. Feel free to send your internal component dimensions for a quotation.

I’m a professional PCB design engineer with extensive experience in developing high-speed digital, RF, and embedded system hardware. Over the years, I’ve successfully designed and delivered dozens of production-ready PCBs across various industries — from industrial automation and telecommunications to IoT, radar, and medical electronics. My work covers the entire product development cycle, including schematic design, PCB layout, signal & power integrity (SI/PI) analysis, EMI/EMC optimization, and DFM validation for mass production. I focus on precision, performance, and reliability, ensuring that every design meets the client’s technical and manufacturing requirements. My Expertise PCB Design: Multilayer, high-speed, RF/microwave, and mixed-signal boards High-Speed Interfaces: DDR, USB, HDMI, Ethernet, LVDS, PCIe EDA Tools: Altium Designer/Kicad/easyEDA/Eagle / OrCAD / Cadence Allegro /PADS Simulation Tools: Proteus/Multisim/CST / HFSS / ADS / LTspice / HyperLynx Hardware Design: Analog and digital circuits, power management, embedded boards Manufacturing Optimization: DFM, DFT, impedance control, EMC compliance Collaboration: Strong coordination with firmware, mechanical, and production teams What I Can Deliver ✅ Complete circuit & PCB design (Prototype to Mass Production) ✅ Enclosure design for PCB and 3D printing ✅ High-speed & RF PCB layout with impedance matching and SI/PI analysis ✅ EMI/EMC issue troubleshooting and optimization ✅ Design improvement and cost reduction consulting ✅ Antenna and RF front-end layout design ✅ Documentation for manufacturing and assembly

I am an Electrical/Electronic Engineer having master's degree in electrical/Electronic Engineering with 14 years of experience in the field of Power electronics, Embedded systems, analog and digital electronics, Wireless sensor network and Internet of Things. I have developed hardware and Embedded systems of IOT devices, Environment Monitoring devices, Power electronic converters (DC -DC, AC to DC and DC to AC), Inverters, VFD (variable frequency Drive) simulation and Testing. I have skills and experience in following areas ✔Circuit Designing (analog and Digital), from concept to prototype and prototype to production ✔Firmware development based on STM32, Arduino, Raspberry Pi, ESP32 and ESP8266 ✔Wireless communication based on Lora Modules, Zigbee modules, NRF Module, NRF51822 BLE module ✔ IoT / Embedded Electronics Engineering Projects ✔Mathematical Modeling, Components Selection, Schematic Designing and PCB designing based on Altium Designer. ✔sourcing of components, negotiation of components and manufacturing of customized product ✔Testing and Debugging of Electronic circuits. ✔Hardware Designing of data loggers with sensors intergeneration. ✔Assembly services of electronic circuits and products ✔Robotics and automation ✔Power electronic converter circuit (buck converter, boost converter, inverters) designing testing and debugging ✔ ESP32 based projects like water quality tester, AI based gesture recognition system ✔ESP32 CAM based face recognition system ✔ESP32 based AI camera ✔ Arduino based embedded system projects using sensors and actuators' ✔Deep knowledge and expertise DC and AC motor driver designing ✔ EMI and EMC testing ✔Experienced Schematic and PCB designing trainer ✔ Experience embedded systems and IOT trainer