Conovaloff Constantin
Male, born on 15 April 1989, 33 years
Desired position and salary
Senior Software Developer
PHP or Golang or Full-Stack development
7 500
usd per month
About me
10+ years experience with PHP and highly loaded systems.
I have no problems working with legacy code. I love learning how the system works, debugging, finding and fixing errors.
I easily adopt the code-style of your project and stick to it, so as not to increase the entropy of approaches in the code.

My programming languages:
- PHP (expert)
- JavaScript (expert)
- Golang (expert)
- Python (expert)

Database which i use:
- MySQL (expert)
- PostgreSQL (expert)
- ClickHouse
- Redis
- MongoDB

- Work with highload projects
- Used frameworks: Laravel, Symfony, Yii
- Writing code without: XSS, CSRF, mysql injection
- Write Unit tests for code

- Multiprocess\Multitreding programming
- Debugging workflows via pyringe
- Network asynchronous socket based applications, prefork

System administration:
- Installation of applications from source codes
- Installation of PHP, Nginx, Apache modules
- use docker, ansible, nagios, strace, tcpdump
Work experience — 12 years
January 2022 — till now
5 months
Idealyst NFT — Chief Developer
Idealyst is a PayToEarn NFT game

My duties included:
- Game development with Unity and GameMaker
- FullStack development of the website
- Writing Smart Contracts in Solidity language
- Blockchain development using web3.js
June 2019 — April 2022
3 years
VK — Senior PHP Developer is the biggest social network in Russia, which entails:

- 50 millions Daily Active Users
- working in a very high load environment with high responsibility
- working with the best of the best in the country

Position - Lead PHP dev in the Ads Tech department

- development of targeting and data collection tools
- development and support of VK pixel tech on external sites
- development and support of dynamic retargeting
- development and support of the ads API
- development of AB testing tools
- load monitoring, spotting and elimination of bugs and errors

Notable achievements:
- helped merging two companies and their code bases
- migrated code from monolith to microservices
June 2018 — June 2019
1 year 1 month
RealTimeGroup — Lead PHP Developer
- Leading a small team of 2 people.
- Task distribution.
- Coordination and discussion of projects with the management.
- Development of the project architecture.
- Project for automatic processing of receipts and data recognition
- Designing an ElasticSearch database, building queries using complex logic, writing built-in search scripts
- Code coverage with automated tests
- Stress Testing
January 2016 — June 2018
3 years
SADESIGN — Software Developer
- Backend, Frontend website development. (PHP, JavaScript)
- Laravel, Vue.js
- Development of daemon services in Python
- Server administration
- Backups
- Projects in QT (C ++)
January 2013 — December 2016
4 years
Hosting company Beget — PHP Developer
- BackEnd PHP programming
- Full cycle of work on project features
- elimination of errors (work through bug tracking)
- profiling problem requests (XHProf, xDebug)
- Framework: Yii
- writing multiprocess and multitreding, daemons and services for managing servers.
- Administration:
- solution and elimination of problems in the work of Nginx, Apache, MySql, network
- FrontEnd programming

Notable accomplishments:
- Writing a fully automated sales system for SSL certificate issuing and deployment for clients websites
- System for management, automatic sales and allocation of external IP addresses for clients websites