# Kirill Markin - Staff Software Engineer

> Personal website of Kirill Markin — Staff Software Engineer, Founder. Specializes in AI/LLM implementation, data engineering, startup guidance, and technical consulting across multiple languages and industries.

Kirill Markin is an experienced AI and data engineering professional who helps businesses and individuals leverage artificial intelligence and data technologies. His expertise spans from technical implementation to strategic consulting, with a focus on practical, real-world applications.

Key areas of expertise:
- AI/LLM implementation and optimization for businesses
- Data engineering and analytics department auditing
- Startup launch guidance and technical co-founder matching
- Career coaching for tech professionals
- R&D department strategy and optimization

## Articles & Insights

- [Why I Replaced 17 Agent Tools with One SQL-Like DSL](https://kirill-markin.com/articles/sql-like-dsl-for-ai-agents/): How I collapsed 17 agent tools in Flashcards Open Source App into one SQL-like DSL endpoint that internal and external LLMs can learn quickly.
- [Claude Code Rules: CLAUDE.md Global Instructions for AI](https://kirill-markin.com/articles/claude-code-rules-for-ai/): My Claude Code rules using global CLAUDE.md instructions. How I split personal and project rules so the agent keeps my coding patterns across repos.
- [Codex Rules: Global Instructions, AGENTS.md, and Mac App](https://kirill-markin.com/articles/codex-rules-for-ai/): My Codex rules for AI: how I use Codex custom instructions, AGENTS.md, and the Mac app to keep the same coding patterns across different repos.
- [All Articles](https://kirill-markin.com/articles/): Complete collection of articles on AI, data engineering, and technology

## Services & Consulting

- [All Services](https://kirill-markin.com/services/): Complete overview of all available services and consulting options
- [For Individuals](https://kirill-markin.com/services/?category=people): Personal consulting and career guidance
- [For Businesses](https://kirill-markin.com/services/?category=business): Business consulting and technical implementation
- [For Media & Journalists](https://kirill-markin.com/services/?category=journalists): Media relations and expert commentary

## Professional Background

- [About Page](https://kirill-markin.com/): Detailed professional background and experience
- [Schedule Meeting](https://kirill-markin.com/meet/): Book meetings and consultations with Kirill
- [Professional Network](https://kirill-markin.com/): LinkedIn and other professional profiles

## Optional

- [Payment Options](https://kirill-markin.com/pay/): Information about payment methods and billing
- [Multilingual Content](https://kirill-markin.com/es/, https://kirill-markin.com/zh/, https://kirill-markin.com/ar/, https://kirill-markin.com/hi/): Content available in Spanish (es), Chinese (zh), Arabic (ar), and Hindi (hi)
- [RSS/Sitemap](https://kirill-markin.com/sitemap.xml): Complete site structure and content index

## Markdown Access

Any page on this site is available as clean Markdown for LLM consumption:
- Append `.md` to any URL (e.g. https://kirill-markin.com/.md, https://kirill-markin.com/articles.md, https://kirill-markin.com/services.md)
- Or send the HTTP header `Accept: text/markdown` to get Markdown from the original URL