Alex Reardon
Principal Frontend Engineer at Atlassian
Greater Sydney Area Australia
Summary
🤩
Rockstar🎓
Top SchoolAlex Reardon is a Principal Frontend Engineer based in Sydney with 12 years of experience crafting polished, accessible web interfaces and developer-facing libraries. At Atlassian he has progressed from Frontend Engineer to principal, driving UX-focused engineering and mentoring teams on large-scale React applications. A prolific open-source maintainer, Alex is known for projects like react-beautiful-dnd (a widely used drag-and-drop library) and utility libraries such as memoize-one and tiny-invariant, where he’s improved TypeScript support, typings, and build/test flows. He blends attention to visual detail and developer ergonomics—aiming to make others “feel like rockstars”—and brings a rare mix of front-end craftsmanship and tooling expertise backed by formal IT and law studies.
12 years of coding experience
8 years of employment as a software developer
Bachelor of Information Technology with the degree of Bachelor of Laws with honours [BIT LLB (Hons)] IT LAW, Bachelor of Information Technology with the degree of Bachelor of Laws with honours [BIT LLB (Hons)] IT LAW at Macquarie UniversityBachelor of Science in IT IT, Bachelor of Science in IT IT at University of Technology Sydney
Stackoverflow
626reputation
58kreached
31answers
6questions
Github Skills (24)
javascript10
memoization10
testing10
component-development10
drag-and-drop10
typescript10
ui-design10
uid10
rollupjs10
front-end-development10
typescript-types10
typescripts10
react10
performance-monitor9
accessibility9
Programming languages (11)
Github contributions (5)
alexreardon/tiny-invariant
Apr 2018 - Nov 2022
A tiny invariant function
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:13 releases, 13 reviews, 134 commits in 4 years 7 months
Contributions summary:Alex primarily focused on converting the project to TypeScript. They modified the build process with Rollup to support TypeScript compilation and created corresponding configuration files. The user also updated test files, including adjusting existing tests and adding new tests to ensure compatibility with the new type system. Furthermore, the user added a feature for lazy message support in the invariant function.
tinyinvariantjuliaassertassertion
alexreardon/memoize-one
Feb 2017 - Oct 2021
A memoization library which only remembers the latest invocation
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:18 releases, 17 reviews, 259 commits in 4 years 9 months
Contributions summary:Alex primarily contributed to the memoize-one library by adding and improving type annotations. Their work focused on enhancing code clarity and maintainability by incorporating more detailed type information within the source code. They addressed binding issues and refactored the API to simplify its usage. Furthermore, the user upgraded project dependencies and provided new tests to ensure the library functions as expected.
memoizationjavascriptmemoizeperformance
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