Cardboard builds an agentic video editor for growth and marketing teams, creators, and other users who need to produce videos quickly. Its browser and Mac-based editor lets users describe an intended edit in natural language, then creates and modifies a real timeline. Cardboard supports tasks including cutting footage, captions, reframing, motion graphics, voice cloning, AI-generated media, B-roll sourcing, collaboration, and exports up to 4K. Users can edit directly in Cardboard or connect agents such as Claude and Codex, and Cardboard also supports editing through ChatGPT and Claude via MCP. The company is a Y Combinator Winter 2026 startup.
Cardboard offers candidates the chance to work on technically demanding problems at the intersection of AI agents, multimodal models, browser performance and professional video editing. The company is a Y Combinator Winter 2026 startup and describes itself as backed by YC, a Tier-1 global fund and founders of billion-dollar companies. Its small team gives new hires substantial product ownership, while current roles offer competitive salary and founding-team equity. Engineering work includes building a high-performance browser editor, reliable agentic editing workflows and multimodal evaluation systems. Cardboard also provides employees with broad access to AI models and a budget for AI tools and work equipment.
Graphics API
Browser Media API
AI Integration Protocol
Co-founder and CEO of Cardboard. Before Cardboard, Aggarwal was co-founder and CTO of Iterate AI and a Founder in Residence at Entrepreneurs First. He studied computer science at BITS Pilani and has experience building early-stage technology products and AI companies.
Co-founder and CTO of Cardboard. Sharma previously spent about five years building performance-intensive browser applications at HackerRank and was a senior engineer there. He also created Hotspoter, an app that reached more than 5 million downloads, and studied at Chitkara University.
Cardboard
Cardboard added integrations that let users bring clips into ChatGPT or Claude, request edits conversationally, preview the resulting timeline, and continue fine-tuning the project in Cardboard.
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Cardboard reported faster motion-graphics exports on Mac, lower resource usage, shareable editing recipes, expanded photo-to-video generation, and improvements to its Mac application.
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Cardboard released a native Mac application with local editing and support for using Claude or Codex as the agent controlling Cardboard's editing tools and timeline.
Read articleCardboardBengaluru, India
CardboardBengaluru, India
CardboardBengaluru, India
CardboardBengaluru, India
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CardboardBengaluru, India
