
4D is the perception layer for live sports. We use ultra-low-latency AI to turn live video into real-time monetization - powering virtual advertising and deeper engagement.

4D is the perception layer for live sports. We use ultra-low-latency AI to turn live video into real-time monetization - powering virtual advertising and deeper engagement.
What they do: AI-powered, ultra-low-latency native video monetization and virtual signage for live sports and esports
Headquarters: San Francisco, California, United States
Founded: 2020
Team size: About 21 employees
Funding stage: Seed / early-stage (multiple early rounds listed)
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Live video monetization and virtual advertising in sports and esports broadcasts
2020
Advertising / Broadcasting / Sports / Esports
Crunchbase lists this as the latest round; amount obfuscated
“Includes accelerator and angel backers such as Berkeley SkyDeck and individual investors listed on public profiles”
Company Description
We’re hiring a Senior C++ Graphics / Rendering Engineer to work on high-performance rendering systems used in production environments. This role is ideal for someone with deep experience in C++, OpenGL, and GPU performance who enjoys building and maintaining core rendering infrastructure while collaborating closely across teams.
You’ll help evolve a graphics system that supports real-time and offscreen rendering workflows, with a strong focus on performance, stability, and clean interfaces.
4D Sight is revolutionizing live sports through cutting-edge technology that bridges AI and real-time video. Using ultra-low-latency AI, we transform live video into new monetization and engagement opportunities, enabling virtual advertising and richer fan experiences for sports organizations and brands worldwide.
What You’ll Do
• Maintain and extend a high-performance rendering library written in modern C++
• Work on OpenGL-based rendering pipelines with a focus on reliability and performance
• Read, understand, and improve existing C++ and graphics codebases
• Expose C++ functionality to Python for use by downstream teams
• Ensure correct memory management and performance across C++ and Python boundaries
• Debug and resolve rendering and graphics-related issues
• Collaborate with engineers across teams to ensure the system is robust and usable
• Contribute to technical documentation and best practices