Dan Wolff
Software Engineer at Sectra
Linköping, Sweden
Summary
👤
Senior🎓
Top SchoolDan Wolff is a software engineer with 15 years of experience building reliable back-end and full-stack solutions, currently based in Linköping and working at Sectra. He specializes in C#, TypeScript, and SQL, with a strong focus on usability and knowledge sharing across teams. An active open-source contributor, Dan has improved major JavaScript tooling like Terser and UglifyJS by optimizing compression and fixing subtle evaluation bugs, demonstrating attention to performance and correctness. His work on the compat-table project shows an eye for maintainability and tooling that turns data into clear web-facing artifacts. Trained with an MSc in Information and Communication Technologies from Lund, he blends formal engineering rigor with pragmatic contributions to widely used developer tools.
15 years of coding experience
12 years of employment as a software developer
Université de Technologie de TroyesMaster of Science (MSc) Information and communication technologies, Master of Science (MSc) Information and communication technologies at The Faculty of Engineering at Lund University
English, Swedish, Finnish, French
Github Skills (21)
code-optimization10
debug10
javascript10
parser10
compress10
css10
build-system10
html10
compression10
web-development10
strings9
parserator9
text-manipulation9
front-end-development9
test-automation8
Programming languages (7)
Github contributions (5)
mishoo/UglifyJS
Nov 2012 - Feb 2018
JavaScript parser / mangler / compressor / beautifier toolkit
Role in this project:
Software Engineer (Optimization and Bug Fixes)
Software Engineer (Optimization and Bug Fixes)Contributions:8 commits, 7 PRs, 74 comments in 5 years 4 months
Contributions summary:Dan primarily contributed to optimizing and bug-fixing the JavaScript code within the `uglifyjs` repository, focusing on code compression and evaluation improvements. They implemented changes to the code to improve efficiency, like replacing string concatenation patterns and improving the evaluation of expressions, such as `.length` calls. The user's work addressed specific issues and enhanced the overall performance and accuracy of the JavaScript parser and compression toolkit. Their changes included code modifications within multiple files, including `lib/compress.js`, `test/compress/issue-126.js`, and `test/compress/arrays.js`.
beautifierjavascriptcompressormanglercompress
compat-table/compat-table
Nov 2012 - Sep 2013
ECMAScript compatibility tables
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:9 commits in 10 months
Contributions summary:Dan primarily contributed to the `compat-table/compat-table` repository by enhancing the compatibility tables. They added support information for new browser features like "maps" in Firefox 18. The user also created a build system using JavaScript to convert data files into static HTML tables, improving the project's maintainability and data presentation. Further commits corrected typos, improved code formatting, and renamed browser IDs for better clarity.
jsjavascriptcompatibilityecmascript
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