An ASIC design developer creates and develops application-specific integrated circuits (ASICs), which are specialized chips used in everything from smartphones to medical equipment. This involves defining specifications, designing, verifying, and testing the ASICs. They use hardware description languages (HDLs) like VHDL or Verilog, and need strong knowledge of digital design principles, computer architecture, and system on chip (SoC) design. They also use CAD tools for design, simulation and validation. They work closely with other engineers to integrate and implement the ASIC into the final product, ensuring it meets all performance, power, and area requirements.