Ivan Izobov - Front end developer, XB Software

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Work Background

XB SoftwareFrontend Developer

Jan. 2022Created new components such as Event Calendar and File Manager using Svelte, Type Script and Java Script. I supported the whole lifecycle of the product from the very first git commits till release. To control progress we used agile techonolgy with YouTrack tool by JetBrains. Covered existing code with unit tests such as Mocha and Cypress for integration tests We splited all Java Script functions to sepperate npm libs, so it would be easy to change Svelte layout to React, View and Angular As a result new lightweight google like components with a lot of useful features were invented. The company got a lot of new customers and audience with new components

XB SoftwareFrontend Developer

Mar. 2020Минск, Республика БеларусьImproved of the existing production component DHTMLX Spreadsheet using TypeScript JavaScript: -added new features -fixed bugs -replaced the core -improved perfomance and render speed During my work on DHTMLX Spreadsheet such features as mathematical functions, fixing rows / columns, merge cells, filter, sorting, multiply sheets, interective edit line and other where aded. As a result, sales of this component grew at least 10 times. Rendering speed increased by more than 100 times. Suported production tool with React + Redux on client and Go on server side Covered code with intagration tests using Cypress and Chai for unit tests.

XB SoftwareJunior Frontend Developer

Mar. 2020Республика БеларусьFixed bugs in an existing product DTMLX Suite using Type Script and Java Script. Improved code quality and performance. Optimazed render speed

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