Daniel Ryan
Staff Software Engineer at Chainguard
Raleigh-Durham-Chapel Hill Area United States
Summary
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Rockstar🎓
Top School
Top expert inComprehensive Python Ecosystem Development
Daniel Ryan is a Staff Software Engineer with 13 years of experience specializing in software supply chain security and open source tooling, now shaping security-first developer workflows at Chainguard. He blends hands-on engineering, architecture, and team leadership to deliver scalable, user-centric solutions that harden software ecosystems and streamline acquisition and patching processes. A longstanding contributor and maintainer in the Python packaging community (notably Pipenv-related work and improvements to pip-tools and the pypa bandersnatch PyPI mirror), he focuses on compatibility, storage backends, and quality automation. His background includes leading cross-functional teams to realize multi-million-dollar savings through analytics and systems integrations, and founding a consultancy that emphasized secure, resilient architectures. Comfortable both as a technical lead and individual contributor, he brings a mix of strategic thinking and practical code-level fixes that keep large open-source ecosystems running reliably.
13 years of coding experience
18 years of employment as a software developer
MSPPM Public Policy and Management, MSPPM Public Policy and Management at Carnegie Mellon UniversityBA Politics & Philosophy History, BA Politics & Philosophy History at University of Pittsburgh
Stackoverflow
271reputation
11kreached
2answers
1question
Github Skills (24)
mirroring10
pip-tools10
python10
packaging10
configuration-management10
pip10
bandersnatch10
swift10
testing9
filelock9
asyncio8
requirements8
lockfile8
setuptools8
git7
Programming languages (11)
Github contributions (5)
jazzband/pip-tools
Apr 2018 - Aug 2018
A set of tools to keep your pinned Python dependencies fresh.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits, 3 PRs, 25 comments in 3 months
Contributions summary:Daniel focused on updating the `pip-tools` codebase to maintain compatibility with various versions of the `pip` package manager, specifically versions 8 through 18. Their work involved refactoring repository code, modifying compatibility shims, and updating import statements to align with changes in `pip`'s internal structure. They addressed version-specific issues by updating internal resolver and incorporating required changes to `PyPIRepository` to resolve dependencies correctly.
dependenciespythonkeeplockfilepip
pypa/bandersnatch
Mar 2020 - May 2020
A PyPI mirror client according to PEP 381 http://www.python.org/dev/peps/pep-0381/
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:5 commits, 5 PRs, 16 comments in 2 months
Contributions summary:Daniel primarily contributed to improving the `bandersnatch` PyPI mirror client. Their work included updating pre-commit configurations to improve code quality and ensure compatibility with tools like `black` and `isort`. They also focused on implementing a storage backend abstraction layer, developing filesystem and swift storage plugins. Furthermore, the user addressed swift-specific bug fixes, added type hints, and ensured the proper use of the storage backend path wrapper.
pythonpypidevpypi-mirror-clientpep381
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