# Koudai Aono (koxudaxi)

> Python OSS creator and maintainer. Creator of datamodel-code-generator,
> PEP 750 co-author, and author of Python IDE tooling. Open to full-time
> roles where public OSS stewardship is a core responsibility. Based in
> Tokyo and available for global remote work.

## Public impact

- datamodel-code-generator: 16M+ PyPI downloads per month,
  4k GitHub stars, created in 2019 and maintained continuously since then.
- JetBrains plugins: 1.2M+ combined downloads.
- Direct public integrations include OpenAI Codex, the MCP Python SDK,
  Apache Airflow, Datadog, OpenTelemetry, PostHog, and other projects.
- Test and evaluation use includes vLLM, browser-use, and DSPy.

## Projects

- [datamodel-code-generator](https://github.com/koxudaxi/datamodel-code-generator):
  Generate Pydantic / dataclass / TypedDict / msgspec models from OpenAPI,
  JSON Schema, GraphQL, and CSV. 4k stars, 16M+ downloads/month.
  Docs: https://datamodel-code-generator.koxudaxi.dev/
- [fastapi-code-generator](https://github.com/koxudaxi/fastapi-code-generator):
  Generate a FastAPI app from an OpenAPI spec. 1.4k stars.
- [pydantic-pycharm-plugin](https://github.com/koxudaxi/pydantic-pycharm-plugin):
  Pydantic support for PyCharm. 647k downloads.
- [ruff-pycharm-plugin](https://github.com/koxudaxi/ruff-pycharm-plugin):
  Ruff support for PyCharm. 450k downloads.
- [poetry-pycharm-plugin](https://github.com/koxudaxi/poetry-pycharm-plugin):
  Poetry support for PyCharm. 107k downloads. Bundled with PyCharm since 2021.3.
- [PEP 750](https://peps.python.org/pep-0750/): Template strings, shipped in
  Python 3.14 (co-author).
- [t-linter](https://github.com/koxudaxi/t-linter): A linter for t-strings
  (PEP 750), written in Rust.

## Work

Koudai starts with repeated problems that existing tools do not solve well. He
defines the model, builds the tool, adds the integrations and documentation
needed to use it, and keeps it compatible as Python and its libraries change.
His work spans schema-driven code generation, typing, Python language design,
PEPs, IDE support, static analysis, migration, and long-term OSS maintenance.

## Role

Koudai is looking for a full-time role where public OSS stewardship is a core
responsibility. The role can include sustained work on datamodel-code-generator
and broader work across Python language design, standards, PEPs, CPython,
typing, and developer tooling. The project can remain independent MIT-licensed
OSS while a company funds its development through his role.

He previously worked fully remote with a US company and at the Tokyo branch of
a UK company. He is not actively trying to sell datamodel-code-generator. He
will consider a confidential acquisition discussion for an exceptional
strategic fit.

## Talks and materials

- EuroPython 2026 (EN): "Beyond Optional in Real-World Projects: Missing, None, and Unset"
  https://github.com/koxudaxi/europython_2026
- PyCon US 2026 (EN): "Beyond Optional in Real-World Projects: Missing, None, and Unset"
  https://github.com/koxudaxi/pyconus_2026
- PyCon US 2025 (EN): "Type Hints in Real-World Projects"
  https://www.youtube.com/watch?v=mgrrDZUN0Bk
- EuroPython 2025 (EN): "Type Hints in Real-World Projects"
  https://www.youtube.com/watch?v=Yrfix5WdvLU
- PyCon US 2024 (EN): "Enhancing Decorators with Type Annotations"
  https://www.youtube.com/watch?v=Kyaj-oQcl_0
- EuroPython 2024 (EN): "Enhancing Decorators with Type Annotations"
  https://www.youtube.com/watch?v=b3WBkrY9vik
- PyCon JP 2025 invited talk (JA): "PEP 750: New Features in Python 3.14"
  https://www.youtube.com/watch?v=RbVzIkatOxo

## Contact

- Email: koxudaxi@gmail.com
- GitHub: https://github.com/koxudaxi
- LinkedIn: https://www.linkedin.com/in/koxudaxi/
- Mastodon: https://fosstodon.org/@koxudaxi
- Site: https://koxudaxi.dev/