Position: Rust Developer
Category: Rust
English level: upper
Years of experience: 6

Developed an RTB server with a 4000 RPS, improved it's CPU and memory usage.
----------------------------------------------------------------------------
Refactoring highloaded legacy app (Adtech domain) with huge code base, full of side-effects and no information about how it works (developer, who wrote it, quit a few years before). 
- wrote complete technical documentation from the scratch
- found and optimized many critical issues that reduced the response time from 500ms+ to ~200ms and saved the thousands of dollars for the company
- implemented product viability metrics
----------------------------------------------------------------------------
Rewrote from the scratch advertising platform as separate service, based on previous one, built into the monolithic architecture.
- All components are independent and isolated from the monolith product code
- High test coverage (Feature, Unit, Integration tests)
- Modern user-friendly stack (SPA, realtime messages through websockets etc.)
- Ease of use by colleagues (automated audit of every action on the platform, advertiser experience reports, anomaly alerts etc.)
----------------------------------------------------------------------------
Was working as a team lead on a project with very badly designed legacy code (Fintech domain). Step by step refactoring and improving it`s security, quality, and performance. Adding migrations, IoC Container, Unit tests, ORM and many other features.
-----------------------------------------------------------------------------
Other:
Integration with different APis (CRM, Payment providers etc.)
Creating anti-fraud solutions
System stability monitoring
Covering application with unit and integration tests
E-commerce website development
Bots development (Slack, Telegram etc.)
Clients dashboards development
A fan of clean architecture and academic approaches, but without fanaticism that could harm business :)
I have high expertise in the adtech (mostly) and fintech domains.
Working with highload applications and databases.

Currently working as lead of small rust team.

BACK END
Rust, Actix, Tokio, Sqlx, Ormx
mySQL, PostgreSQL
Redis
Memcache
AWS (sqs, rust lambda, kinesis)
// other backend skills
PHP7+ (OOP, TDD, DDD)
Doctrine 2 ORM
Laravel / Lumen, Zend, Yii2, Symfony Components
PHPUnit

FRONT END
HTML5, CSS3
Javascript (ES5, ES6)
Vue.js (Vue Bootstrap, Vuetify)
Twitter Bootstrap
JQuery, Dojo.js
Elm (basic knowledge)
Highly experienced in web development. Not into blockchain yet, but I'm ok with this domain too.

Most interested in designing and maintaining projects from the scratch