Matt Karl

@bigtimebuddy

Software engineer and design leader with decades in open-source, building tools that bridge design and engineering and streamline complex workflows.

Let's Work Together

What I Do

Developer Tools

Design and build elegant, intuitive tools that empower teams. From CLI utilities to visual editors, I create experiences that make complex workflows feel effortless.

Workflow Architecture

Transform how teams collaborate and ship. I architect build pipelines, deployment systems, and automation that accelerates delivery and reduces friction.

Open-Source Leadership

Launch, grow, and sustain thriving open-source projects. I help organizations build communities, governance models, and sustainable contribution ecosystems.

Featured Projects

PixiJS

Co-owner and core maintainer of the industry-leading 2D WebGL rendering engine. Powers games, animations, and interactive experiences across the web.

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PixiJS Sound

Author of the WebAudio-powered sound engine for PixiJS. Delivers spatial audio, filters, and advanced playback for immersive experiences.

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PixiAnimate

Created Adobe Animate extension for native PixiJS export. Bridges design and development workflows for animators worldwide.

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PixiJS Filters

Maintainer of the visual effects library. Provides GPU-accelerated filters and shaders for stunning real-time graphics.

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SpringRoll

Co-author and owner of the application framework for building accessible HTML5 games. Used in educational and entertainment projects globally.

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Keyframe Caddy

Professional animation plugin for Adobe Animate. Streamlines keyframe workflows for animators and motion designers.

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