Video Generation Content Understanding and Feedback Researcher

LightSpeed Studios; Singapore; On-site; SGD 150,000 - 210,000; Full time

Job summary

LightSpeed Studios' Lightspeed Tech Center seeks a PhD-level AI researcher to advance generation and understanding of video content. You will explore model architectures, track state, and collaborate with RL teams to build end-to-end generation–understanding loops for interactive games.

Candidates should have deep hands-on expertise in Python/PyTorch, publications in video understanding or RL, and a track record of designing complex training pipelines.

Qualifications

• Ph.D. in AI-related fields with focus on video understanding or multimodal generation.
• Strong Python/PyTorch skills and publications in relevant areas.
• Experience with interactive video generation or controllable generation is preferred.

Responsibilities

• Research model understanding for generated content and spatial relationships.
• Develop state tracking and consistency modeling for generated videos.
• Collaborate with RL teams to close the generation–understanding–control loop.
• Lead evaluation systems and monitor industry developments to shape roadmaps.

Skills

Python/PyTorch

Video understanding

Reinforcement learning

Research pipelines

Education

Ph.D. in AI-related fields

Tools

VLM models

Diffusion model principles

Job description

Overview

LIGHTSPEED STUDIOS is a leading global game developer focused on advancing the art and science of game development through stories, gameplay, and technology. We aim to deliver next generation experiences across multiple genres and devices.

About the Hiring Team

Lightspeed Tech Center is an R&D department under Lightspeed Studios that develops PUBG Mobile and other high-quality games. The Tech Center leads research, exploration, and discovery of innovative technologies and provides technical services for all games throughout their lifecycle, including engine, audio, QA, AI, next generation game development, and technical cooperation.

What the Role Entails

• Research the model’s ability to understand generated content, parse semantics, objects, relationships, and spatial structures.
• Implement state tracking and consistency modeling for generated videos.
• Explore unified generation-understanding model architectures.
• Research causal consistency control and physical constraints for the action input → video output pipeline.
• Research hybrid architectures to achieve low-latency feedback for real-time interactive generation.
• Collaborate with Agent/RL teams to drive an end-to-end closed loop of generation → understanding → control → feedback.
• Validate controllable interactive capabilities in game scenarios and lead the establishment of evaluation systems.
• Continuously track industry-related work and formulate proprietary technical roadmaps.

Who We Look For

• Ph.D. in AI-related fields, covering areas such as video understanding, video prediction, reinforcement learning, or multimodal generation and understanding.
• Deep understanding of the internal mechanisms of both video generation and VLM models; familiarity with diffusion model principles.
• Research experience in interactive video generation or controllable video generation.
• Ability to independently design complex model training pipelines with strong engineering skills.
• Proficient in Python/PyTorch, with publications in video understanding, controllable generation, or reinforcement learning.
• Experience with Game AI, simulation environments, or closed-loop systems is preferred.
• Relevant publications in top-tier conferences or journals are preferred.

Equal Employment Opportunity

As an equal opportunity employer, we firmly believe that diverse voices fuel our innovation and allow us to better serve our users and the community. We foster an environment where every employee feels supported and inspired to achieve individual and common goals.

LIGHTSPEED STUDIOS is a leading global game developer with teams across China, the United States, Singapore, Canada, the United Kingdom, France, Japan, South Korea, New Zealand, and the United Arab Emirates. We have created over 50 games across multiple platforms and genres for more than 4 billion registered users. We are the co-developer of PUBG MOBILE (co-developed with KRAFTON, Inc.).