Patrick Marsceill, software designer

I'm a software designer who makes high quality developer tools that scale. My working style is hands-on and I enjoy writing code as much as untangling problems, designing interfaces, and collaborating with my team. Inevitably one of these things will lead to another.

Work Experience

Magic 2024-present

Designing and building autonomous software development tools.

WorkOS 2022-2024

Led and managed the design of all products and marketing surfaces. Helped shape, design, build, and launch the entirety of WorkOS during my tenure.

• Launch Week
• User Management
• AuthKit
• Audit Logs
• Multi-Factor Authentication
• Radix AI
• WorkOS Classic: 404 page
• WorkOS.com

GitHub 2015-2022

Managed product design and was a Staff Designer for Code to Cloud and Productivity Tools teams.

• GitHub Projects & Issues
• GitHub Actions
• GitHub Packages
• GitHub Code Review
• GitHub Merge Queue
• GitHub Security
• GitHub.com

Happy Cog 2012-2015

Worked as a Senior Designer on product and marketing design projects for clients like Google, Trek Bicycles, MTV, and The Philadelphia Inquirer.

Empathy Lab 2008-2012

As a UX designer, I worked on product and ecommerce design for clients like DirecTV, Sony Pictures, and Rogers Communications.

Projects

MAP CLI

MAP (multi-agent platform) is a toolkit for running many coding agents locally in the same codebase. It enables spawning n agents, each in their own isolated worktree as well as a task queue and syncing with GitHub Projects.

• MAP CLI on GitHub
• My demo on Twitter

Plastic List

I designed and engineered the web interface for displaying microplastics in commonly available foods. This was a group project organized and funded by Nat Friedman.

• plasticlist.org
• Nat's Announcement on Twitter

This Modern Web

My personal website / blog — I tend to write about design and tech, my own life, and occasionally music and film.

• p.atrick.org
• RSS Feed

Aware

A MacOS and VisionOS app built with Josh Peek that tracks how long you've been using your device in a single sitting.

• awaremac.com
• Aware in the App Store

Feedster relaunching soon

A simple web-based RSS reader with public and private channels for sharing.

• Launch post on Twitter
• UI update on Twitter

Tab Lab

Write and share fully rendered guitar tablature authored in the easy-to-write VexTab syntax. Think markdown, but for guitar music. Sunset in 2016 due to hosting costs.

• Tab Lab on web.archive.org

Elsewhere

You can find me around the web as @pmarsceill in most places.

• GitHub
• Read.cv
• Twitter
• Strava