Daniel Del Core
Principal Software Engineer, Design Systems at Atlassian
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolDaniel Del Core is a Principal Software Engineer specializing in design systems and front-end architecture, with 11 years of experience building web, mobile and interactive experiences from Sydney. He has driven design-system work at Atlassian (including contributions to Atlaskit and the widely used react-beautiful-dnd project) and previously shipped payment and checkout features at BigCommerce. Comfortable across product teams and agencies, he blends pragmatic engineering—robust testing, accessibility and CSS-in-JS improvements—with creative UI work for brands like Audi, Heineken and Blackmores. Daniel is an active open-source contributor and maintainer on projects such as DefinitelyTyped and performance-minded tooling, demonstrating attention to type-safety and test coverage. He pairs hands-on coding with mentoring and system-level thinking, often surfacing small but impactful fixes (like edge-case tests and Jest matcher improvements) that improve reliability across large codebases.
11 years of coding experience
13 years of employment as a software developer
Computer Science Enterprise Computing / Mobile Computing, Computer Science Enterprise Computing / Mobile Computing at University of Wollongong
Stackoverflow
3,091reputation
986kreached
9answers
53questions
Github Skills (43)
checkout10
javascript10
bigcommerce10
dnd-tools10
jes10
css-in-js10
css10
drag-and-drop10
testing10
typescript10
typescript-definitions10
type-definition10
iview10
sdk10
jestjs10
Programming languages (6)
Github contributions (5)
danieldelcore/mega-interview-guide
Aug 2018 - Oct 2022
The MEGA interview guide, JavaSciript, Front End, Comp Sci
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 reviews, 64 commits, 20 PRs in 4 years 2 months
Contributions summary:Daniel primarily focused on front-end development within the mega-interview-guide repository. Their contributions include restructuring the project, adding favicons, implementing a website deploy script, and integrating Open Graph and Twitter meta tags for improved social sharing. Additionally, the user added analytics tracking through Splitbee and updated the CSS and HTML for the site.
javascriptfundamentalsscicomputer-sciencefrontend
atlassian/react-beautiful-dnd
Jan 2019 - Nov 2022
Beautiful and accessible drag and drop for lists with React
Role in this project:Front-end Developer
Front-end DeveloperContributions:3 releases, 22 reviews, 74 commits in 3 years 10 months
Contributions summary:Daniel primarily contributed to the testing and functionality of the React-based drag-and-drop library. They focused on adding test cases for various scenarios, including edge detection and total coverage of a droppable area. Furthermore, the user addressed code improvements such as removing duplicate boolean checks, demonstrating a focus on code quality and robust testing practices.
reorderingreactaccessibledrag-and-dropsortable
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