# Hi there! 👋 I'm Dmitrii Gudov (kr0sh512)

I'm a DevOps-oriented developer and Computer Science student at [CMC MSU](https://cmc.msu.ru/). I build and operate Linux infrastructure, automate repeatable work, develop system and backend tools. My current focus is ALT Linux and RPM internals, Kubernetes, containers, CI/CD, and Python/C systems tooling.

---

## 🚀 About Me

- 🎓 **Computer Science student at CMC MSU**
- 🐧 Interested in **DevOps, Linux infrastructure, system programming, and networking**
- 🛠️ Operating and troubleshooting multi-node infrastructure with **K3s/RKE2, Docker/OCI, Ansible, TLS automation and more**
- 🔬 Researching and optimizing **ALT Linux RPM `set:version` dependency processing**
- 📫 Reach me at **gudovdo@my.msu.ru**

---

## 💼 Experience

- **BaseALT** — Linux/RPM tooling and systems research — _Current_
- **Yandex Intern**, **DevTools Team, Autonomous Transport** — _Fall 2025_

---

## 🔧 Skills

- **Languages**: Python, C, C++, Shell, SQL
- **Infrastructure & DevOps**: Linux, Docker/OCI, Kubernetes, K3s, RKE2, Helm, Ansible, Traefik, systemd, SSH
- **CI/CD**: GitHub Actions, GHCR, multi-architecture container builds, automated testing and packaging
- **Backend & Data**: FastAPI, SQLAlchemy, Pydantic, PostgreSQL, SQLite, MongoDB
- **Engineering Practices**: pytest, mypy, Black, sanitizers, differential testing, benchmarking, and reproducible build workflows

---

## 🖥️ Projects

### [ALT RPM Set Version Research](https://github.com/kr0sh512/alt-rpm-set-version)

Research into ALT Linux RPM's encoded symbol sets and dependency comparison. The project covers C implementation work, hashing, compatibility testing, sanitizer checks, and benchmarks against realistic RPM/APT workflows.

### Personal Infrastructure Automation

Ansible playbooks for automating Linux servers and repeatable administration. My broader infrastructure work includes multi-node K3s clusters, container deployment, ingress and ServiceLB networking, TLS lifecycle automation, and remote troubleshooting.

For example, [Gitea Instance](https://git.krosh.dev)

### [nexus-sync](https://github.com/kr0sh512/nexus-sync)

A client-server system for centrally managing computers and dispatching approved commands. Built with FastAPI and SQLAlchemy, with a CLI, YAML-configured clients, systemd units, standalone builds, tests, type checks, and CI packaging.

### [Pomodoro](https://github.com/kr0sh512/pomodoro)

A customizable browser-based Pomodoro timer and clock built with React, TypeScript, and Vite. GitHub Actions tests and packages it as an unprivileged multi-architecture container published to GHCR. Aviable on [pom.krosh.dev](https://pom.krosh.dev)

### [Network Diagrams Tool](https://github.com/kr0sh512/network-diagrams-tool)

A Python tool for building and visualizing network topologies, developed for networking and infrastructure coursework at CMC MSU.

### [Marzban Telegram VPN Bot](https://github.com/kr0sh512/profhome-vpn-bot)

A containerized Python Telegram bot that integrates with the Marzban API, manages one-time invitations and user lifecycle, and persists local state in SQLite.

### [Syncing Spotify with Telegram Bio](https://github.com/kr0sh512/spotify-to-tg-bio)

A script that syncs the playing track from spotify in the background with the Bio column in the user's telegram.

---

<!--
## 📈 GitHub Stats

![kr0sh512's GitHub stats](https://github-readme-stats.vercel.app/api?username=kr0sh512&show_icons=true&theme=radical)

[![Top Langs](https://github-readme-stats.vercel.app/api/top-langs/?username=kr0sh512&layout=compact)](https://github.com/anuraghazra/github-readme-stats)

---
-->

## 🌐 Connect with Me

[![Telegram](https://img.shields.io/badge/Telegram-Kr0sH_512-blue?style=flat&logo=telegram)](https://t.me/kr0sh_512)
[![Email](https://img.shields.io/badge/Email-gudovdo@my.msu.ru-blue?style=flat&logo=gmail)](mailto:gudovdo@my.msu.ru)

---

Thanks for visiting my profile! Feel free to reach out for collaboration, Linux infrastructure, systems programming, or DevOps projects.