Coder (noun)

1. A person who writes code, especially computer programs.
2. A person who writes the code that controls the operation of a machine or system.

Origin:

Derived from the word "code" meaning a system of rules or instructions for converting information into an encoded form that can only be read by someone with the knowledge of the decoding rules.

Examples:

1. She's a talented coder and can write complex programs quickly.
2. He's a coder who specializes in developing mobile apps.
3. The company was looking for a coder with experience in Javascript.
4. The coder was able to fix the bug in the software.
5. The coder worked with the designer to create a user-friendly interface.