Thomas Portelange - Gérant at kalyptus

Thomas Portelange

Gérant at kalyptus

Brussels, Brussels-Capital, Belgium

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Summary

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Senior

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Top School

Thomas Portelange is a multidisciplinary web developer and founder with 14 years of experience delivering interactive, accessible, and commerce-ready web solutions from Brussels. As Gérant of kalyptus he blends front-end craftsmanship (HTML/CSS/JavaScript, UI/UX, animation) with back-end expertise in PHP, ColdFusion and server/databases administration to ship end-to-end projects. He has a long history in design-driven development—Adobe Suite and Flash-era interactivity—paired with modern open-source contributions improving UX and core behavior in projects like Tabulator and the Silverstripe framework. His contributions show a practical focus on robustness and usability: editing features, export and responsive layout for Tabulator, and form/email/session fixes and optimizations in Silverstripe. Comfortable wearing product, project and accessibility hats, he brings an uncommon combination of visual design sensibility and low-level engineering to solve complex web problems.

14 years of coding experience

7 years of employment as a software developer

Master English in Media & Art, Master English in Media & Art at Education First

1ère candidature informatique, 1ère candidature informatique at Université libre de Bruxelles

CESS, CESS at Athénée Adolphe Max

Ecriture Multimédia, Ecriture Multimédia at Haute Ecole 'Groupe ICHEC - ISC Saint-Louis - ISFSC', Bruxelles

French, English, Dutch

Stackoverflow

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Github Skills (19)

javascript10

silverstripe10

responsive-design10

datatable10

ui-design10

datatables10

uid10

php10

front-end-development10

html-table10

tabulator10

datagrid10

databases9

eforms9

use-form9

Programming languages (15)

PowerShellMDXJavaC++CSSCRustGo

Github contributions (5)

silverstripe/silverstripe-framework

Sep 2016 - Sep 2022

Silverstripe Framework, the MVC framework that powers Silverstripe CMS

Role in this project:

Back-end Developer

Contributions:34 reviews, 19 commits, 65 PRs in 6 years 1 month

Contributions summary:Thomas primarily contributed to the Silverstripe Framework by addressing bug fixes, and implementing features related to form handling, email rendering, and session management. They optimized code, such as caching Member queries and ensuring efficient processing of emails by removing unnecessary requirements. The user also added validation and improvements, including preventing spaces in emails and supporting search filter instances. These changes enhanced the framework's functionality, reliability, and user experience.

cmsmvc-frameworksilverstripe

tabulator-tables/tabulator

May 2022 - Jul 2022

Interactive Tables and Data Grids for JavaScript

Role in this project:

Front-end Developer

Contributions:6 commits, 12 PRs, 47 comments in 1 month

Contributions summary:Thomas primarily contributed to improving the user interface and functionality of the Tabulator library. Their commits focused on fixing null warnings, adding missing JavaScript extensions, enhancing the editing features, updating the table size on collapse toggle, and adding a class for editable cells. These changes involved modifying various modules related to download functionality, page layout, column management, cell behavior, export, responsive layout, and editing features, indicating a strong focus on the core table functionality and user experience.

datagridjavascripttabulatorgridgrid-layout

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