In the context of film and television production, a visual effects supervisor is responsible for achieving the creative aims of the director or producers through the use of visual effects.
[1] While it is a creative role, most supervisors possess a strong technical background and are capable of making informed decisions about the most efficient and effective technique to employ to solve the problem at hand.
Supervisors can be employed directly by a film production company or work for a visual effects company.
Often there are several VFX supervisors on a project, although there is typically a senior VFX supervisor directing their efforts.
Specific responsibilities vary depending on the nature of the production, however most supervisors: The Visual Effects Society is a prominent trade organization representing the interests of visual effects professionals.