VFX Supervisor
VFX supervisor is the most top tier position in VFX industry hierarchy. They are responsible for the entire VFX project. They deal with the VFX pipeline, remembering all of the VFX artists that work for this cycle. They have obligation regarding all of the all components created for the movie.
VFX supervisors work on an undertaking from the beginning phases of preproduction. They often need to communicate among VFX artists and the director or producer of the film or TV program. In this way, they settle on what VFX is required for each shot of the film together. VFX supervisors also work with the VFX specialists to make draft version and present to director.
Take Mr. Swen Gillberg as an example:

Swen Gillberg as
Visual Effects Supervisor of Free Guy
| Filmography Of Swen Gillberg |
2021 | Free Guy (production visual effects supervisor) |
2019 | Avengers: Endgame (additional visual effects supervisor) |
2018 | Avengers: Infinity War (additional visual effects supervisor) |
2016 | Captain America: Civil War (visual effects associate supervisor) |
2015 | Fast & Furious 7 (senior visual effects supervisor: Digital Domain) |
Data Capture Technician
Data capture technician is responsible for capturing and organising all data from a movie shoot. They have to work on-set to collect data, ranging from type of lens, focal length, filters, focus, colour temperature to camera height and camera mount will be used significantly for further VFX process. They need to ensure that the distance of sets and actors are marked up.
In this way, they upload, log, and backup all data before delivering it to the appropriate VFX company members on a daily basis by using total station.


John Ashby worked for movie Joker and John Wick 3 data scanning with his total station.
Compositor
Compositor is the job position to seamlessly merge digital assets with live-action footage to bring together the final shot of movie. Their work is the final step of the VFX pipeline, which in charge of assisting in the creation of the final finished animation, film, or other production by spotting faults and designing compositing tactics that produce a balanced overall aesthetic.
They have to get familiar with software, Nuke, with organizational skills and the ability to multitask to edit node graph, while keeping sharp eye for color grading and color matching.

Also see the VFX Compositing Artist, Genevieve Camilleri’s Interview & Advice :


Compositing Supervisor
Compositing supervisors work closely with the compositors, as a leader to supervise the team of compositors, meanwhile they work closely with VFX supervisors to ensure the timely completion of shots for their shows. They oversee all compositing aspects of film production. Supervisors might complete and deliver compositing shots when necessary to the project with their very experienced skill in compositing.
Compositing supervisors also need to manage the production workflow and VFX pipeline as well as the production bidding.
Take Mr. Jim Steel and Mr. Anthony Smith as examples:

Jim Steel as the Compositing Supervisor in Scanline VFX London
Reference:
1. Borges, G. (2020). 7 career tips for compositors in VFX. [online] Available at: https://thefocus.com/updates/7-career-tips-compositors
2. McMahon, C. (2021). 5 tips to keep your compositing team productive. [online] ftrack. Available at: https://www.ftrack.com/en/2021/03/5-tips-to-keep-your-compositing-team-productive.html
3. Fitzgerald, R. (n.d.). VFX Compositing Artist Interview & Advice With Genevieve Camilleri. [online] www.cgspectrum.com. Available at: https://www.cgspectrum.com/blog/vfx-compositing-artist-interview-advice-with-genevieve-camilleri
4. IMDb. (n.d.). Jim Steel. [online] Available at: https://www.imdb.com/name/nm1140628/?ref_=fn_al_nm_1
5. IMDb. (n.d.). Swen Gillberg. [online] Available at: https://www.imdb.com/name/nm1089828/?ref_=fn_al_nm_1
6. View Archive (2011). Leading VFX Data Capture Company 4DMax Invest in the Latest Leica High-Definition Surveying Technology. [online] Eric Colburn, PLS. Available at: https://ericcolburn.com/leading-vfx-data-capture-company-4dmax-invest-in-the-latest-leica-high-definition-surveying-technology/