Maciej Smolinski
Principal Software Engineer at New Relic
Barcelona, Catalonia, Spain
Summary
👤
Senior🎓
Top SchoolMaciej Smolinski is a Principal Software Engineer with 16 years of experience building high-scale front-end and full-stack systems, currently shaping dashboards, data visualization, and exploration at New Relic from Barcelona. He combines deep hands-on expertise across JavaScript/TypeScript ecosystems and functional languages (PureScript, ClojureScript, Haskell) with practical backend skills in Node.js and Ruby to drive performance, reliability, and developer productivity. Known for leading bottom-up initiatives, he has repeatedly reduced bundle sizes and build times, removed technical debt at scale, and introduced reliability and documentation practices that reduce tribal knowledge. A collaborative engineer and careful listener, he pairs technical leadership with workshops and RFC-driven change to align product and business goals. He also contributes to open-source tooling—improving compatibility and usability in libraries like video_info—and frequently prototypes compiler-assisted and domain-specific approaches to improve developer experience.
16 years of coding experience
18 years of employment as a software developer
IT & Economics, IT & Economics at Uniwersytet Ekonomiczny w Katowicach
Polish, English
Stackoverflow
316reputation
21kreached
13answers
0questions
Github Skills (13)
ruby10
apim10
rspec10
api10
http9
emberjs6
ember-data6
nodejs6
typescript6
javascript6
vue6
react-redux6
ecmascript6
Programming languages (7)
Github contributions (5)
thibaudgg/video_info
Nov 2011 - Nov 2011
Get video info from Dailymotion, Vimeo, Wistia, and YouTube URLs.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits in 1 day
Contributions summary:Maciej primarily focused on enhancing the `video_info` library to improve its functionality and usability. They added the capability to set custom `User-Agent` headers and other options compatible with `openURI`, improving the library's compatibility with various video platforms. The user also introduced the support for symbols and strings, ensuring the options can be correctly used. Furthermore, they modified the code to improve OpenURI compatibility and cleaned up the spec code.
urlswistiayoutubevideo-infodailymotion
maciejsmolinski/antlr-grammar-based-syntax-highlighter
May 2021 - Apr 2022
🎨 A *proof of concept* minimal code editor with automatic syntax highlighting powered by ANTLR grammars via simple mapping from ANTLR tokens to color codes
Contributions:1 review, 94 commits, 5 PRs in 10 months
proof-of-concepttokenstextmatevscodegrammar
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