TheJobsMap
About 21st
21st.dev is the largest React component registry for AI applications, used by 2M developers (370K MAU). We provide the building blocks to create AI agents and agent-powered apps: UI components, agent templates, and an SDK with built-in UI, tools, memory, observability, and managed infrastructure.
- Founded
- 2025
- Employees
- 3
- Headquarters
- San Francisco
Leadership
The top of 21st's org chart, with how many people report into each leader.
SK
Serafim Korablev
Co-founder, CEO
1 report
SB
Sergey Bunas
Co-Founder
Jobs at 21st
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