I am experienced in HTML, CSS, PHP , JAVASCRIPT, MYSQL, WordPress C, C++, C# programming and so on. I am also experience in PCB design and microcontroller programming for 10 years. I am experienced in PCB design about high speed signal, multi-layer design up to 16 layers, DDR routing, EMC design and impedance calculation. i use Altium Designer and Cadence to design PCB. If you hire me, i'll work for you for a long time and I'll try my best to give you the perpect result. thank you.