An audio engineer is someone with experience and training in the production and manipulation of sound through mechanical (analog) or digital means. As a professional title, this person is sometimes designated as a sound engineer or recording engineer instead. A person with one of these titles is commonly listed in the credits of many commercial music recordings (as well as in other productions that include sound, such as movies).

Audio engineers are generally familiar with the design, installation, and/or operation of sound recording, sound reinforcement, or sound broadcasting equipment, including large and small format consoles. In the recording studio environment, the audio engineer records, edits, manipulates, mixes, and/or masters sound by technical means in order to realize an artist's or record producer's creative vision. While usually associated with music production, an audio engineer deals with sound for a wide range of applications, including post-production for video and film, live sound reinforcement, advertising, multimedia, and broadcasting. When referring to midi, an audio engineer may also be a sequence programmer.

In larger productions, an audio engineer is responsible for the technical aspects of a sound recording or other audio production, and works together with a record producer or director, although the engineer's role may also be integrated with that of the producer. In smaller productions and studios the sound engineer and producer is often one and the same person.

In typical sound reinforcement applications, audio engineers often assume the role of producer, making artistic decisions along with technical ones.

In a professional recording studio, audio engineers are usually required to hold many educational degrees such as:

 > acoustic energy

 > sound reinforcement

 > mathematical algebra & algorythms

 > computer sciences

 > wave form shapes & time travel speeds

 > frequency response

 > harmonic response

 > the human ear vs technology

 > sound synthesis

And many more...