Andres Kalle
Full Stack Developer at Ruutu10
Tartu, Estonia
Summary
👤
Senior🎓
Top SchoolAndres Kalle is a Full Stack Developer based in Tartu, Estonia with 13 years of hands-on experience building and maintaining web applications across the stack. He’s comfortable owning products end-to-end—from project management and architecture to DevOps and QA—primarily using TypeScript/JavaScript, Node.js, React and MongoDB. A consistent open-source contributor, Andres has improved type safety in prominent repos like flow-typed and DefinitelyTyped and tightened UX/docs in react-day-picker, showing attention to both developer experience and front-end detail. He co-founded Ruutu10 and balances creative work as an improvisation instructor with pragmatic software delivery, a mix that informs his collaborative and adaptive approach. Currently contributing at gotoAndPlay and PLAY & NOPE Alliance, he isn’t seeking new opportunities but stays engaged in community-driven improvements and tooling. Notably, his background spans non-web systems and Java work, reflecting a broad technical foundation beyond typical web stacks.
13 years of coding experience
12 years of employment as a software developer
Improvisational comedy, Summer Intensive 2013, Improvisational comedy, Summer Intensive 2013 at iO ChicagoBachelor's degree, Computer Science, Bachelor's degree, Computer Science at Tartu Ülikool / University of Tartu
Estonian, English, Spanish, Russian
Stackoverflow
531reputation
422kreached
7answers
8questions
Github Skills (42)
libstdc10
libc10
javascript10
react-components10
lib10
flow-control10
libudev10
calendar-widget10
calendars10
flow-typed10
typescript10
work-flow10
typescript-definitions10
libdispatch10
type-definition10
Programming languages (18)
Github contributions (5)
flow-typed/flow-typed
Aug 2017 - Feb 2018
A central repository for Flow library definitions
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:5 commits, 6 PRs, 9 comments in 6 months
Contributions summary:Andres contributed to the project by adding type definitions for JavaScript libraries used within the flow-typed ecosystem. They enhanced the type safety of the project by adding the isValid() method for moment.js duration class and adding type definitions for xml-escape. Furthermore, the user addressed issues within the project by fixing a typo and adding temporary stubs for mongodb. This work primarily focused on improving the accuracy and completeness of type definitions for various libraries within the repository.
libdefsflowtypedefinitionscli
gpbl/react-day-picker
Apr 2017 - Apr 2022
DayPicker is a customizable date picker component for React. Add date pickers, calendars, and date inputs to your web applications.
Role in this project:Front-end Developer
Front-end DeveloperContributions:5 commits, 3 PRs, 1 comment in 5 years
Contributions summary:Andres primarily contributed to the project by fixing typos and removing extraneous symbols in documentation and example code, particularly in the context of reverse months navigation and the range-min-max examples. They also corrected issues within the advanced modifiers example. Their contributions focused on refining the user interface components and ensuring the accuracy of documentation related to the React date picker component.
date-pickerreact-componentdatepickercalendar-componentcalendar
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