xue l.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

✅ Full-time freelancer with 18+ years of PCB design experience. ✅ Cadence Allegro /Orcad, Altium Designer . ✅ Prototype PCB production, PCBA assembly. Located in Shenzhen, China. Hello,everyone. Thanks for your visiting on my profile. PCB board design is the main specialties. And also promise you with PCB production and assembly. Please go on for my skills and experience. I'm a Senior PCB design Engineer , with 18 years of experience in the PCB industry. I provide professional pcb design support for complex high-speed, HDI, and multilayer PCB designs. Core Technical Expertise: • Cadence Allegro PCB Editor, OrCAD Capture, Altium Designer • High-speed PCB layout: DDR3, DDR4, DDR5, LPDDR, PCIe, USB, HDMI, DisplayPort, SATA, Ethernet, MIPI, and LVDS,etc. • Complex multilayer PCB design, including 8–16 layer HDI boards• Fine-pitch BGA fanout, blind and buried vias, microvias, via-in-pad, and backdrilling • Controlled impedance, differential pair routing, length matching, and high-speed routing constraints • PCB stackup planning, placement optimization, DRC, DFM, and manufacturing documentation • Fabrication and assembly deliverables, including Gerber, NC Drill, ODB++, and related production files Engineering Experience: My project experience includes computing platforms, embedded systems, FPGA-based hardware, industrial electronics, and high-speed digital boards. I focus on solving complex PCB layout challenges, improving routing efficiency, and delivering reliable, manufacturable PCB designs.