Mattias Wadman
Founding Investor at Spotify
Stockholm, Stockholm County, Sweden
Summary
🤩
Rockstar🎓
Top SchoolMattias Wadman is a seasoned software engineer and founding investor based in Umeå with 17 years of experience spanning embedded Linux, mobile apps and backend systems. At Spotify he has moved between iOS, web and backend work, bringing deep systems knowledge from TCP/IP and networking up through application layers. He is a polyglot comfortable in C, Objective‑C, C++, Go, Erlang and JavaScript, and applies strengths in debugging, profiling and performance tuning to real-world problems. An active open‑source contributor, his fixes and extractors for high-profile projects like youtube-dl/yt-dlp and HexFiend demonstrate attention to edge cases in media formats and parsers. He combines hands-on app development and server administration with a knack for turning obscure binary formats and protocol quirks into reliable tooling.
18 years of coding experience
7 years of employment as a software developer
Computer science, Computer science at Uppsala University
Stackoverflow
11,265reputation
1.5mreached
257answers
10questions
docker
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ruby-on-rails
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php
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cron
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apache
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iphone
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Github Skills (58)
json10
json-parser10
docker10
yt-dlp10
python10
feature-extraction10
vcr10
testing10
jsonp10
extraction10
json-api10
c1110
ytdl10
file-parsing10
containerization10
Programming languages (28)
Github contributions (5)
HexFiend/HexFiend
Jun 2019 - Jul 2021
A fast and clever hex editor for macOS
Role in this project:
Backend Developer
Backend DeveloperContributions:4 reviews, 12 commits, 11 PRs in 2 years 1 month
Contributions summary:Mattias primarily contributed to the development of binary templates for different audio and media file formats within the hex editor project. These templates, written in Tcl, provide the structure for parsing and displaying data within the hex editor. The user added support for various file formats, including ID3v2, FLAC, MOV/MP4, MKV, and OGG. They also fixed bugs related to data length indicators and added new features like a "Show in Template" feature for easier navigation within the parsed structure.
hex-editormacos
ytdl-org/youtube-dl
Dec 2016 - Nov 2020
Command-line program to download videos from YouTube.com and other video sites
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 7 commits, 8 PRs in 3 years 11 months
Contributions summary:Mattias contributed to the `youtube-dl` project by implementing and fixing extractors for various video platforms like Acast, InfoQ, SVTPlay, and SverigesRadio. These changes involved modifying code to extract audio and video formats, handling API changes, and adding tests. Furthermore, the user's work encompassed refactoring code, adding new features such as extracting audio-only formats, and fixing extraction issues to ensure the correct retrieval of metadata and video content.
command-line
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