Šimon Brandner

Student

Czech Republic, Earth, The Milky Way

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Summary

🤩

Rockstar

Šimon Brandner is a computer science student at CTU FEE with seven years of hands-on software engineering experience focused on full-stack and back-end development for the Matrix ecosystem. He has contributed to high-profile open-source projects such as Synapse and Element (desktop, web, and call), improving core features like group calls, screen sharing, read receipts, and UI/UX components. Comfortable across Rust, TypeScript/React, Python, and Electron, he blends frontend polish with backend protocol work and test-suite improvements. An active NixOS and FOSS enthusiast, Šimon brings a pragmatic, refactoring-first approach that often surfaces as type and code cleanups that improve long-term maintainability. Outside the obvious code contributions, he’s contributed subtle but impactful usability features—like spell-check language handling and local volume controls—that noticeably improve end-user experience.

7 years of coding experience

Github Skills (24)

javascript10

postgresql10

matrix10

pytest10

python10

electron10

testing10

css10

typescript10

user-interface10

ui-design10

desktop-application10

matrix-org10

uid10

front-end-development10

Programming languages (18)

JavaC++RustCTeXGoValaHTML

Github contributions (5)

element-hq/element-call

Jul 2021 - Jan 2023

Group calls powered by Matrix

Role in this project:

Front-end Developer

Contributions:315 reviews, 163 commits, 135 PRs in 1 year 6 months

Contributions summary:Šimon primarily contributed to the front-end development of the `element-call` repository, focusing on enhancing the user interface and improving the overall user experience. Their commits demonstrate the implementation of resizable devtools and group call inspector components, adding functionality for local volume control within the video grid, and updating the design of the settings modal. The user also worked on integrating new UI elements and improving the look and feel of the toolbar.

callswebrtcscreensharingvoipmatrix

matrix-org/matrix-react-sdk

Nov 2020 - Dec 2022

Matrix SDK for React Javascript

Role in this project:

Front-end Developer

Contributions:1061 reviews, 1789 commits, 608 PRs in 2 years

Contributions summary:Šimon primarily contributed to the development of the Matrix React SDK for the Element project. Their work involved implementing and modifying UI components using React and TypeScript, including elements for displaying and interacting with messages. The commits focused on bug fixes, UI enhancements, and minor refactors of existing components such as the member list, as well as creating new ones. The contributions demonstrated a focus on front-end development tasks related to the user interface.

reactmatrix-chatjavascriptsdkmatrix-sdk

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