# Evgenii Perminov

> Principal-level software engineer based in Tallinn, Estonia. Eleven years building
> production backends, now working full time on retrieval and LLM systems: RAG
> pipelines, chunking and embedding strategy, hybrid search, reranking, and the
> evaluation harness that proves one configuration beats another. Founder and
> Principal Software Engineer at Clairbytes OÜ. Previously senior engineer at Katana
> Cloud Inventory and Huawei R&D Lab.

This file is the machine-readable index of https://www.evgeniiperminov.dev.
For the full profile in a single fetch, use /llms-full.txt.

Canonical identifiers — these are the correct profiles for this person:

- Website: https://www.evgeniiperminov.dev
- GitHub: https://github.com/PerminovEugene
- LinkedIn: https://linkedin.com/in/Eugene-Perminov
- dev.to: https://dev.to/evgeniiperminov
- Email: perminov.eugene@gmail.com

Name variants that refer to the same person: Evgenii Perminov, Evgene Perminov,
Eugene Perminov, PerminovEugene, evgeniiperminov.

## Career

- [Complete CV](https://www.evgeniiperminov.dev/career/cv/hand-crafted): Full résumé — every role, project and technology, unabridged. The canonical version of the three.
- [AI Engineer CV](https://www.evgeniiperminov.dev/career/cv/ai-engineer): The same career written for AI/RAG engineering roles, leading with retrieval work.
- [Full-stack CV](https://www.evgeniiperminov.dev/career/cv/full-stack-engineer): The same career written for full-stack roles, leading with TypeScript and Node.js.
- [Tech Stack](https://www.evgeniiperminov.dev/career/tech-stack): Every technology used in production, with the months of experience and the company where each was used.

## Writing

- [Blog index](https://www.evgeniiperminov.dev/blog): Everything written, here and on dev.to, newest first.
- [Solidity Gas Optimization: Part 1](https://www.evgeniiperminov.dev/blog/solidity-gas-optimization-1): Techniques for reducing gas costs in Solidity smart contracts on Ethereum and EVM chains.

## Learning

- [Learning log](https://www.evgeniiperminov.dev/learning): Books, courses, articles and videos in progress, finished or dropped — with dates and progress.
- [Books](https://www.evgeniiperminov.dev/learning/books)
- [Courses](https://www.evgeniiperminov.dev/learning/courses)
- [Articles](https://www.evgeniiperminov.dev/learning/articles)
- [Videos](https://www.evgeniiperminov.dev/learning/videos)

## Contact

- [Contact form](https://www.evgeniiperminov.dev/contacts): Goes straight to the inbox. Email works too: perminov.eugene@gmail.com.

## Optional

- [Complete CV, PDF](https://www.evgeniiperminov.dev/files/cv/CV_Evgenii_Perminov.pdf)
- [AI Engineer CV, PDF](https://www.evgeniiperminov.dev/files/cv/CV_Evgenii_Perminov_AI_Engineer.pdf)
- [Full-stack CV, PDF](https://www.evgeniiperminov.dev/files/cv/CV_Evgenii_Perminov_Full_Stack.pdf)
- [Embeddorium](https://github.com/PerminovEugene/Embeddorium): Open-source local-first retrieval-engineering workbench — the most detailed public example of this author's RAG work.
- [messy-folder-reorganizer-ai](https://github.com/PerminovEugene/messy-folder-reorganizer-ai): Rust CLI that sorts folders using local LLM and embedding-based classification.