Boris Cherny
Creator and Head of Claude Code at Anthropic; author of O'Reilly's Programming TypeScript
Boris Cherny is a software engineer at Anthropic, where Cherny created Claude Code, which the project's repository describes as an agentic coding tool for the terminal that understands a codebase and handles routine tasks and git workflows through natural language commands. Anthropic's Code w/ Claude 2026 conference page lists Cherny as Head of Claude Code. Before Anthropic, Cherny worked at Instagram, prototyping and scaling new product and infrastructure ideas, according to Cherny's own site. Cherny is also the author of O'Reilly's Programming TypeScript.1254
Career
Boris Cherny's own site describes a role as a software engineer at Anthropic, where Cherny created Claude Code, after earlier work at Instagram prototyping and scaling new product and infrastructure ideas. Anthropic's Code w/ Claude 2026 programme lists Cherny as Head of Claude Code, presenting a live coding session with Jarred Sumner, the creator of Bun, on how the Claude Code team uses the tool in everyday work.14
The Claude Code repository describes the product as an agentic coding tool that runs in the terminal, understands a codebase and carries out routine tasks and git workflows from natural-language commands.5
Open-source work and writing
Projects pinned on Cherny's GitHub profile include two MIT-licensed TypeScript libraries: json-schema-to-typescript, which compiles JSON Schema into TypeScript type declarations, and undux, a small state-management library for React with Hooks support.378
Cherny is the author of O'Reilly's Programming TypeScript and keeps a blog on software engineering. Its posts include "Towards a Safer Redux" (2017), "13 Tips for Writing a Technical Book" (2019) and a 2024 post on making ES modules easier to use in npm and Node.js.21
Work
Claude Code (external site: github.com)Proprietary product
Created Claude Code at Anthropic, according to Cherny's own site, and is listed as Head of Claude Code on Anthropic's Code w/ Claude 2026 session page. The repository's license file states that Claude Code is copyright Anthropic PBC with all rights reserved, and its use is subject to Anthropic's Commercial Terms of Service.1456
Programming TypeScript (O'Reilly)
Author of the O'Reilly book Programming TypeScript, according to Cherny's own site.12
Career timeline
Oct 30, 2017
Published "Towards a Safer Redux" on Cherny's blog.2
May 26, 2019
Published "13 Tips for Writing a Technical Book" on Cherny's blog.2
Jun 19, 2024
Published a blog post on making ES modules easier to use in npm and Node.js.2
May 6, 2026
Presented a live coding session with Jarred Sumner at Anthropic's Code w/ Claude 2026 as Head of Claude Code.4
Other documented roles
Roles the sources document but that are not confirmed as current.
- Prototyped and scaled new product and infrastructure ideas, Instagram1
Related people
More sourced profiles at the same organization, in the same field, or from the same school.
- Amanda AskellAlso at Anthropic
- Adam FourneyAgents
- Ami VoraAlso at Anthropic
- Aldehir RojasAgents
- Arthur ConmyAlso at Anthropic
- Alex FinnDeveloper tools
- Awni HannunAlso at Anthropic
- Amjad MasadDeveloper tools
- Ben MannAlso at Anthropic
- Andrew LaackDeveloper tools
- Cat WuAlso at Anthropic
- Arvind JainAgents
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