Anna Koskinen
Senior Software Engineer at Vaadin
Turku, Southwest Finland, Finland
Summary
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Rockstar🎓
Top SchoolAnna Koskinen is a Senior Software Engineer based in Turku, Finland with 13 years of experience building and hardening Java-based web frameworks. At Vaadin since 2011, she has driven backend improvements to core components—optimizing file uploads, StreamVariable handling, SQLContainer performance, and sorting behavior in table and tree-grid components. Her contributions to the well-known Vaadin framework reflect deep expertise in server-side Java and pragmatic fixes that bridge client-side features with robust server logic. Anna combines a strong academic foundation (MSc from the University of Turku) with long-term product-focused engineering at an open-source project used by many Java web applications. Colleagues rely on her for solving tricky integration bugs and for making subtle performance and correctness improvements that improve developer and user experience alike. She brings steady, low-friction leadership to mature codebases while continuing to contribute hands-on to core platform code.
13 years of coding experience
Master of Science - MS, Master of Science - MS at Turun yliopisto - University of Turku
Stackoverflow
1,370reputation
16kreached
47answers
4questions
Github Skills (11)
javas10
back-end-development10
java10
data-structures8
data-structure8
algorithms7
vaadin-charts6
css6
vaadin-flow6
grid6
vaadin6
Programming languages (7)
Github contributions (5)
vaadin/framework
Nov 2012 - Feb 2022
Vaadin 6, 7, 8 is a Java framework for modern Java web applications.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 85 reviews, 545 commits in 9 years 3 months
Contributions summary:Anna primarily focused on enhancing the core functionality of the Vaadin framework by modifying the server-side Java code to handle new parameters related to browser details and ensuring the proper functioning of the file upload mechanism. They introduced improvements for handling StreamVariables, along with optimizations to SQLContainer and the sorting within Table components. The user also addressed issues within the code related to menu bar, tab sheet, and tree grid, specifically those relating to client-side features and functionalities.
javavaadinvaadin-frameworkweb-application-framework
Ansku/numberfield
Dec 2014 - Oct 2018
Contributions:21 commits, 4 PRs, 14 pushes in 3 years 10 months
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