Alex Stapleton is a seasoned software developer based in London with 14 years of experience building secure, production-quality backend systems. Currently at Quiet Revolution Ltd, he combines practical software engineering with hands-on security expertise, demonstrated by contributions to the widely used pyca/cryptography project where he improved OpenSSL key handling, error reporting for hash/HMAC algorithms, and vulnerability fixes. He brings deep familiarity with cryptographic primitives and API bindings, translating complex security requirements into reliable, well-documented code. Known for thoughtful documentation updates as well as bug fixes, he bridges developer ergonomics and robust security practices. Colleagues can rely on him to tackle subtle interoperability and error-handling edge cases that often surface in crypto and systems code.
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
Role in this project:
Backend Developer & Security Engineer
Contributions:287 commits, 30 PRs, 13 pushes in 1 year 4 months
Contributions summary:Alex contributed to the `cryptography` project by addressing security vulnerabilities and implementing core functionality related to cryptographic primitives. Their work focused on enhancing the error handling mechanisms for hash and HMAC algorithms, ensuring they raised the appropriate `UnsupportedAlgorithm` exceptions. They also fixed issues related to OpenSSL key loading, showing expertise in understanding and manipulating OpenSSL API bindings. They updated documentation for users, highlighting the changes.
Contributions:15 commits, 11 PRs, 14 pushes in 1 year 11 months
pythonpython3pypy
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Alex Stapleton - Software Developer at Quiet Revolution Ltd