Emil Kowalski
To build things for designers and developers, thinking deeply about user interface look, feel, and behavior.
At a Glance
- Software Developers
- UI/UX Designers
- Design Engineers
- Product Teams
AI Tools by Emil Kowalski
(1)
Skills for Design Engineers
Design Engineer Resource Hub
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Products & Services
An interactive learning experience focusing on the theory and practice of great UI animations for the web.
An opinionated toast component for React, designed for high performance and sleek aesthetics.
An unstyled drawer component for React that can be used as a replacement for modals on mobile.
A specialized skill/prompt for AI assistants like Claude Code to help developers build polished, interaction-heavy UIs.
Market Position
Positions as the premier 'craft-focused' designer-engineer brand, competing in the educational space against generalist platforms like Frontend Masters by offering deep-dives into high-end UI polish.
Leadership
Founders
Emil Kowalski
Design Engineer at Linear, previously Design Engineer at Vercel. Creator of widely-used open-source libraries like Sonner and Vaul. Expert in UI/UX animation and design engineering.
Executive Team
Emil Kowalski
Founder & Design Engineer
Senior Design Engineer at Linear and formerly Vercel.
Founding Story
Emil Kowalski established his own professional brand and legal entity (EFK Consulting) to deliver high-end design engineering services and later products. His focus shifted from consulting to creating educational platforms (animations.dev) and open-source tools (Sonner, Vaul) that help the broader developer community build more polished software.
Business Model
Revenue Model
Direct sales of educational content (one-time course fees) and professional employment (Linear).
Pricing Tiers
Full access to the animations.dev course, Discord community, and interactive exercises.
Multi-seat licenses for companies and design teams.
Target Markets
- Software Developers
- UI/UX Designers
- Design Engineers
- Product Teams
- High-end SaaS UI/UX
- Developer education
- Open-source library integration
- AI-driven design workflows
- Linear
- Vercel
- Avara
- Individual developers and designers worldwide