PCB work falls into two streams. Layout: schematic capture and board layout for new designs, including component placement, routing, and Gerber output. Reverse engineering: pulling a working schematic and modern layout off existing hardware — useful when source files are lost, the original designer is gone, or the board is being modernized. Specialty in converting through-hole boards from the 1970s and 80s to modern surface-mount equivalents, including substituting obsolete parts.