Senior Motion Designer & Creative Technologist (AI Evaluation)

Training Turk; United States; Remote; USD 96,000 - 165,000; Full time

Job summary

Mercor is seeking a Senior Motion Designer & Creative Technologist (AI Evaluation) to lead code-driven motion assets and critique AI-generated content. You will craft complex motion briefs, deliver After Effects and code-based outputs, and help ensure high-quality data for model evaluation.

You will assess timing, typography, and fidelity of AI video outputs, write rubrics, and collaborate with researchers to close performance gaps while maintaining robust encoding pipelines for scalable asset

Qualifications

• 5+ years delivering motion design for top studios or in-house brands.
• Advanced After Effects skills and 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.

Responsibilities

• 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.

Skills

5+ years experience

Strong written communication

Full-time availability

Tools

After Effects

Cinema4D/Blender

Remotion

Three.js

SVG

GSAP

Job description

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