Andrey Sitnik

Author of PostCSS and Autoprefixer, Principal Frontend Engineer
Andrey Sitnik
Background for Andrey Sitnik

Hey! 👋 I’m Andrey, I lead frontend development at Evil Martians. I’m also the company’s first hire.


I’m an expert in open source for JavaScript, with 17 years of experience. I’ve created several industry-standard tools, including Autoprefixer, PostCSS, Browserslist, Nano ID, and Nano Stores, which account for 0.7% of npm downloads. Some have been recognized by Google, Vercel, and ElevenLabs as foundational tools of modern engineering.


About me:


  • I enjoy creating tools to automate developers’ flow, such as Autoprefixer and PostCSS.
  • My current passion is sync engines and using CRDTs to make the frontend and backend best friends.
  • I’m continuously training new developers through one-on-one conversations and public speaking. I’ve presented at conferences in New York, London, Beijing, Tokyo, Moscow.

In my work, I like to focus on adding value for users and businesses rather than simply checking off tasks. Outside of work, I try to promote language diversity and a digital nomad lifestyle.


Major gaming platform

Problem

We needed to modernize and standardize the creator studio’s internal UI component library, but the company didn’t have the resources to handle it in-house. Collaboration between designers and developers was also less than ideal, which caused delivery delays.

Solution

We built a new version of the UI library in Luau React and used it to rebuild several plugins, facilitating the conversation between designers and engineers. We also set up infrastructure for the new creator studio plugins, and participated in the development of the Luau Markdown renderer.

Results

  • Delivered a new UI Foundation Library and integrated it into the creator studio
  • Improved cross-team collaboration
  • Increased team velocity and accelerated feature releases
Lessons building an IntelliJ IDEA plugin for Luau showcase

Akeero

Problem

Security teams like Akeero, an AWS architecture audit platform, need to audit complex AWS architectures but existing tools are just visualization software that can’t formally describe system relationships or support team collaboration.

Solution

We built Akeero a custom diagram composer with real-time collaboration, optimistic UI, and formal relationship modeling using SVG-based architecture and Logux for conflict-free data synchronization.

Results

  • MVP in 4 months with collaborative real-time editing
  • $1.2M pre-seed funding within one year of founding
  • 10x smaller bundle size (315KB vs. 2MB industry average)
  • Set new standard for collaborative security architecture tools
  • Successfully launched with real users and continued independent development
Akeero UI example

Products

Open source projects

Posts

Past events

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Irina Nazarova CEO at Evil Martians

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