Vsevolod — Python Backend Engineer

// backend

I design and build digital products: APIs, web services, browser extensions, and automation systems. Creating tools that save time for thousands of users.

View work
Get in touch

              
// ./me.ascii
08
projects in prod
350K+
unique project users
04
extensions in Chrome Store
06
years of experience

selected projects

09 projects · click to open

grid
list

LyriCat

extension
[live]

Translates song lyrics right inside Spotify, in its own visual style.

SpeakStop

extension
[live]

Voice auto-pause for media: start talking and playback pauses, go quiet and it resumes.

FileTray

extension
[live]

Fast file picker for uploads: recent files, screenshots, clipboard — no system dialog.

Quick Video Export for Claude Design

extension
[live]

Fast video export for Claude Design: a button on the timeline opens the native export dialog — no digging through menus.

Navaro

web app
[open source]

AI trip planner: routes, a live map and trip ideas in one interface.

uzum-payments

package
[open source]

Python wrapper for the Uzum Checkout API. Sync and async clients, fully typed.

TemuSpy · TemuScan

pipeline
[running]

A pipeline that auto-generates videos and posts featuring TEMU products and publishes them. RU & EN editions.

GivSteam

bot
[running]

Auto-posts free game and DLC giveaways to a Telegram channel: pulls active offers from the GamerPower API and renders a cover with the platform logo and price struck through to zero. Button and caption adapt to the content type — game, DLC, loot, beta.

Gtrobot Crypto

bot
[inactive]

Crypto bot: unique trading tools, automated trading and signals for users. A custom system that auto-paid users for promo videos posted across platforms. Peaked at 200k unique users.

what clients say

A few words from people I have worked with.

99%
avg project uptime
$100K+
earned for clients
$10K+
saved vs agencies
Awesome job, very reliable and quick!
Client, UpworkUpwork ↗
Vsevolod was amazing to work with, he is very talented and has great communication skills. Highly recommended!
Client, UpworkUpwork ↗
Vsevolod worked as lead developer for over 3 years. He proved himself excellently, building high-load, high-performance solutions.
CEO, GTRobotGTRobot
10/10, simply lol
LyriCat userChrome Web Store ↗
Wow, I love how this extension is integrated into the Spotify interface and style. There are many languages available, the translation is quite correct. Thanks to the author! Hopefully the extension will keep growing.
LyriCat userChrome Web Store ↗
Thank you so much! Really enjoyed working with him — everything done at the highest level.
Client, freelancefreelance
Thanks for the delivery. Everything on time and error-free. I recommend working with him :)
Client, freelancefreelance
Thanks for the work! The bot is done excellently and works exactly as needed.
Client, freelancefreelance

about

Backend Engineer building APIs, automation systems, and digital products.

6+ years of experience. Former crypto startup developer. Freelancer. Indie maker. I enjoy solving complex problems and turning ideas into reliable software.

backend
PythonFastAPIasyncioREST / WebSocketsSQLAlchemyPydanticAlembicPostgreSQLAiogramDjangoRedisCelery / task queuesHTTPX / aiohttpCCXTpython-binancePytest
frontend
ReactTypeScriptJavaScript (ES6+)ViteLeaflet
devops / infra
Docker / Docker ComposeLinuxNginxCI/CD (GitHub Actions)VPS deployment
automation / tools
Chrome Extensions (Manifest V3)FFmpegWeb scrapingTask automationCron / schedulers
integrations / APIs
REST APIsWebSocket APIsPayment / crypto APIsThird-party SaaS integrations
architecture
System designHigh-load backendRate limiting / cachingEvent-driven architectureMessage queues
⌘K — commands · click a project to open it