Paweł Romanowski
Founder, Software Developer at HejHop Software
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolPaweł Romanowski is a founder and seasoned software developer with 12 years of experience building backend systems, APIs, data processing pipelines and test automation, primarily in Python with growing expertise in Rust. He leads HejHop Software as CEO and principal developer, serving major financial clients, and previously contributed backend engineering at Sauce Labs and quantitative systems at BlackRock. Paweł combines hands-on implementation with a strong focus on code quality and maintainability—demonstrated by contributions to the popular lychee link-checker where he improved network-related checks and refactored Rust code for robustness. Known for obsessive attention to detail and clear communication, he thrives in collaborative, open-minded teams and mentors others while keeping a continual appetite for learning how things work under the hood.
12 years of coding experience
10 years of employment as a software developer
Computer science, Computer science at Warsaw University of Technology
Polish, English, code
Stackoverflow
1,280reputation
126kreached
23answers
1question
string-formatting
top-5%
dictionary
top-5%
Github Skills (16)
ip10
ip-address10
link-checking10
rust10
url-parsing10
testing10
regex9
dictionary9
string-formatting9
keyword-argument6
pandas6
decorator6
python6
coffeescript6
numpy6
Programming languages (9)
Github contributions (5)
lycheeverse/lychee
Oct 2020 - Sep 2021
⚡ Fast, async, stream-based link checker written in Rust. Finds broken URLs and mail addresses inside Markdown, HTML, reStructuredText, websites and more!
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 reviews, 26 commits, 19 PRs in 11 months
Contributions summary:Paweł primarily contributed to the `lychee` project by implementing new features and refactoring existing code related to link checking functionality. Their work involved adding methods to extract host IP addresses, implementing features to exclude private URLs based on IP addresses, and improving code maintainability. The user's contributions demonstrate a focus on enhancing the core functionality and robustness of the link checker, particularly concerning network-related checks. The user also refactored the code to integrate clippy and cargo fmt.
checkerfast-asyncstreamlinklink-checkers
pawroman/links
Jan 2019 - Apr 2022
Links to programming and software engineering related resources I found useful or interesting. A personal "awesome list".
Contributions:184 commits, 20 PRs, 207 pushes in 3 years 3 months
interestingmanualengineeringlinksperl
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