Cecilia Roes
Back End Developer at Swedish Pensions Agency
Sweden
Summary
🤩
Rockstar🎓
Top SchoolCecilia Roes is an experienced back-end developer with 13 years building reliable, data-focused systems across organizations from Google and Spotify to Multiply Teknik & IT and the Swedish Pensions Agency. She brings deep expertise in phone-number processing and geocoding—having contributed to Google's widely used libphonenumber project by improving geocoder components, prefix handling, and offline geocoding tools. Comfortable in large-codebase environments, Cecilia has a track record of shipping robust Java services and improving core APIs and data pipelines. Based in Sweden and educated at KTH, she blends strong academic foundations with practical production experience. Colleagues describe her as pragmatic and detail-oriented, often tackling tricky data-handling edge cases that others overlook. She now applies that same rigor to public-sector backend systems, focusing on maintainability and correctness at scale.
13 years of coding experience
9 years of employment as a software developer
Computer Science, Computer Science at KTH Royal Institute of Technology
Github Skills (4)
java10
javas10
geocoding10
data-handling9
Programming languages (1)
Github contributions (5)
google/libphonenumber
Sep 2013 - Nov 2015
Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:34 commits, 14 PRs, 14 pushes in 2 years 1 month
Contributions summary:Cecilia primarily focused on updating and maintaining the geocoder component within the libphonenumber repository. Their work involved modifying Java source and test files related to geocoding, specifically PrefixFileReader and PhoneNumberOfflineGeocoder, indicating a focus on data handling and geocoding logic. They also contributed to the PhonePrefixMap, and the PhoneNumberUtil API, and updated the tools for generating and managing the geocoder binaries. This suggests a deep understanding of the project's core functionality related to phone number processing and location-based services.
javascript-libraryphone-numberphoneinternational-phoneunderscore
roes/libphonenumber
Jan 2015 - Nov 2015
Contributions:15 pushes, 3 branches in 10 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.