Senior Motion Designer & Creative Technologist (AI Evaluation) Job at Training T

Senior Motion Designer & Creative Technologist (AI Evaluation)
$70–120/hr

Mercor

Full time, 40 hours a week

Senior motion designer who builds and critiques code‑driven animation assets for a generative AI lab.

What you would do

Create complex motion‑design briefs and deliver After Effects and code‑based files

Assess AI‑generated videos for timing, typography, and visual fidelity

Write rubrics and automated scripts to ensure data quality

Partner with researchers to close gaps in model performance

Maintain video encoding pipelines using FFmpeg and related tools

Who they want

5+ years delivering motion design for top studios or in‑house brands

Advanced After Effects skills plus Cinema4D/Blender for 3D elements

Experience with Remotion, Three.js, SVG, GSAP, or similar frameworks

Availability for full‑time 40‑hour weeks and strong written communication

What the interview asks about
"A model produced a kinetic‑type intro that drifted off‑screen after 2 seconds; how would you document the issue and suggest a fix?"

AI video quality feedback

"A model produced a kinetic‑type intro that drifted off‑screen after 2 seconds; how would you document the issue and suggest a fix?"

Why this comes up

They need to confirm you can spot subtle timing or typographic errors that affect model training, ensuring data reliability.

"You must generate a 10‑second SVG animation using Remotion that loops seamlessly; describe your debugging process when the loop stutters at frame 120."

Code‑driven animation pipelines

"You must generate a 10‑second SVG animation using Remotion that loops seamlessly; describe your debugging process when the loop stutters at frame 120."

Why this comes up

Your ability to write and debug animation scripts directly impacts the speed of data generation for the AI team.

FFmpeg workflow automation

"Given a batch of 1080p ProRes clips, outline the FFmpeg command you’d use to convert them to H.264 4:5 ratio while preserving audio sync."

FFmpeg workflow automation

"Given a batch of 1080p ProRes clips, outline the FFmpeg command you’d use to convert them to H.264 4:5 ratio while preserving audio sync."

Why this comes up

Efficient video encoding and concatenation are critical for producing consistent training assets at scale.

Quality rubric creation

"Design a rubric section for evaluating easing curves in motion graphics; what criteria would you include and why?"

Quality rubric creation

"Design a rubric section for evaluating easing curves in motion graphics; what criteria would you include and why?"

Why this comes up

Clear guidelines enable consistent evaluation across reviewers and improve model feedback loops.

Collaboration with research teams

"A research team reports poor performance on overlay tracking; how would you craft a motion‑design task to target this issue?"

Collaboration with research teams

"A research team reports poor performance on overlay tracking; how would you craft a motion‑design task to target this issue?"

Why this comes up

Aligning design tasks with research goals ensures that generated data addresses specific model weaknesses.

How to prepare

Assemble a portfolio showing both traditional and code‑driven motion work

Refresh your After Effects expressions and FFmpeg command line syntax

Build a small Remotion or Three.js demo that renders a video file

Draft a sample rubric evaluating timing, hierarchy, and sync for motion assets

The facts
Pay $70–120/hr

Hours Full time, 40 hours a week

Where Remote, United States

Open to USA

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