VFX Supervisor
This role is responsible for the whole VFX project and managing the production pipeline. A VFX Supervisor’s responsibilities include three stages. The first stage is to work closely with director and director of photography to decide what programs and techniques will be used to achieve the necessary visual effects. In the second stage, the VFX Supervisor needs to make sure all VFX scenes are shot properly. The last stage is to lead the post-production team to create the required visual effects and to oversee the quality of the works done by other VFX artists.
Data Capture Technician
They go onset of a film/TV shooting to collect all information about the live-action footage and take photographs of the set for VFX team to add visual effects. This job enables the VFX team to recreate some scenes digitally. Data capture TD uses a variety of tools to collect the information, such as cameras and a ‘total station’ which electronically measures horizontal and vertical angles and distances.
Compositor
The compositing artist is in charge of integrating the CG elements into live-action footages, and combining various digital elements to produce a believable picture. Basically, this role will be required to do chroma keying which will be used in green screen or blue screen shots in order to place the subject in a different setting or environment later. Their work is the last part of the VFX pipeline.
This VFX breakdown reel from Avengers shows how compositing works are finished.
Compositing Supervisor
The Compositing Supervisor is responsible for the management of the compositing team and the quality of the compositing work. They work closely with VFX Supervisor, CG Supervisor and the VFX Producer to communicate between the departments and represents the voice of the compositing team to pipeline environment. Compositing Supervisors need to be very experienced in compositing. They supervise the compositing team to meet the deadlines make sure the film or TV production company receives the VFX work on time.
Below is a job post from Industrial Light and Magic, they were looking for a Compositing Supervisor and posted relevant requirements and responsibilities.