Rigging TD
Rigging TDs work closely with 3D Modellers, and they are in charge of creating digital skeletons for the 3D models, which will be used by Animators for their character’s movements later on. When Rigging TDs receive facial shapes and expressions of characters, it’s their duties to figure out how the characters move. They receive feedback from Animators after testing the rigs, and are responsible for any required fixes.
Some key skills include programming or coding skills with Python and C++, as well as experience with CG software such as Maya, Houdini, 3DMax. Rigging TDs need to have an excellent understanding in musculature, movement and timing.
Creature TD
Creature TDs will find creative and technical solutions to build the software for the artists to develop rigs and simulations like fur, feathers, and skin for their creatures. According to the size of the studio, they may be required to do rigging which includes creating systems of skeletons and muscles for animators.
In Outpost VFX studio, they require their Creature TDs to have some key skills such as, be familiar with rigging tools in Maya, Python scripting skills, as well as highly knowledgeable in Houdini.
VFX Producer
They gather the VFX team and other technical artists, set schedules for them, and manage the budget. And then they work closely with production crew in live-action projects. They are involved from early discussions, bidding and shot breakdowns, through to ensuring the final result is in high standard as required and the projects come in on time and in budget.
I found some links to requirements of this role from different studios’ recruitment.
https://axisstudiosgroup.com/careers/jobs/vfx-producer/
https://jobs.jobvite.com/double-negative-visual-effects/job/oRuz5fwJ
Production Manager
The Production Managers supervise the work of Production Coordinator and are responsible for managing artists, schedules, and daily tasks. They will work between the VFX Producers and VFX Supervisors. The Production Manager is the bridge of all aspects of production and post-production.
An article of the interview with Chelsea Mirus on The Rookies reveals how is it like to work as a Production Manager.
https://discover.therookies.co/2022/01/05/career-advice-working-as-a-vfx-production-manager/