John Wiegley
West Sacramento, California,United States
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John Wiegley is a highly respected and prolific software engineer known for his significant contributions to the open-source community, particularly in the realms of functional programming, financial software, and developer tools. He is the creator of Ledger, a powerful command-line accounting system that has garnered a dedicated following for its flexibility and plain-text approach. John has also made extensive contributions to GNU Emacs, including maintaining core components and developing popular packages like 'use-package'. His expertise spans languages such as Lisp, Haskell, C++, and Perl. Throughout his career, he has held senior engineering roles at notable companies like Google and Fastmail, working on complex systems and improving developer productivity. John is also a frequent speaker at technical conferences, sharing his insights on software design, functional programming, and effective tooling.
Professional Summary
John Wiegley's work history includes a series of influential roles in various companies. Here is a detailed list of his professional journey:
Notable Achievements
Creator of Ledger CLI
Developed Ledger, a groundbreaking open-source, double-entry command-line accounting system that uses plain text files, enabling users to manage finances with powerful reporting and scripting capabilities.
Significant GNU Emacs Contributor
Authored and maintained numerous influential Emacs packages (e.g., use-package, which simplifies Emacs configuration) and contributed to the core Emacs development, significantly enhancing its functionality and user experience for many developers.
Advocate and Expert in Functional Programming
A prominent figure in the Lisp and Haskell communities, applying and promoting functional programming principles to build robust and maintainable software, and sharing this knowledge through talks, writings, and open-source projects.
Influential Open Source Developer
Consistently contributed high-quality, impactful software to the open-source world for decades, influencing countless developers and projects with his work and philosophy on software craftsmanship.
Educational Background
None, Philosophy, Computer Science, German
George Mason University - Year 1990
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Company Overview
KadenaKadena is a layer-1 proof-of-work blockchain platform that aims to provide enterprise-grade scalability, security, and developer-friendly tools. It features a unique braided multi-chain architecture called Chainweb, designed to achieve high transaction throughput without compromising security. Kadena also offers Pact, a human-readable and secure smart contract language with Formal Verification capabilities, making it easier and safer for developers to build decentralized applications (dApps).
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