Yuri Vysotskiy
Owner CTO DevOps at wello.digital
Bratislava, Region of Bratislava, Slovakia
Summary
👤
Senior🎓
Top SchoolYuri Vysotskiy is a seasoned technology leader and hands-on CTO with 13 years of experience building and operating high‑traffic, resilient web systems from Bratislava. He runs Yfix Group and advises multiple companies, combining project and team leadership with deep expertise in DevOps, system administration, CI/CD, and information security. Yuri has designed geo-distributed clusters and tuned server estates for concurrency and DDoS resilience, and he routinely implements automation for backups, monitoring and failover. His engineering background spans Linux, Nginx, MySQL, PHP, NodeJS, Python, Redis, RabbitMQ, WebSockets/WebRTC and cloud orchestration with Kubernetes and Terraform/Ansible. An active contributor to open-source tooling, he has improved SQL parsing support in a popular PHP SQL parser to better handle MySQL dialect quirks. He pairs a pragmatic, security‑minded approach with a continual drive to learn and apply modern development practices.
12 years of coding experience
11 years of employment as a software developer
Master’s Degree, Computer Systems Networking and Telecommunications, Master’s Degree, Computer Systems Networking and Telecommunications at Zaporizhzhya National Technical University
Russian, Ukrainian, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
parserator10
php10
parser10
sql10
datatypes10
mysql10
Programming languages (2)
Github contributions (5)
greenlion/PHP-SQL-Parser
Sep 2014 - Sep 2014
A pure PHP SQL (non validating) parser w/ focus on MySQL dialect of SQL
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits in 5 days
Contributions summary:Yuri focused on enhancing the MySQL dialect parsing capabilities of the PHP SQL parser. Their contributions included adding support for `CHARSET` as an alias, which improves compatibility, and incorporating the `TINYINT` data type. Furthermore, the user addressed bugs related to column definitions, particularly with collation and character set definitions and the `YEAR` data type. These changes collectively improve the parser's ability to handle more SQL syntax variations.
sql-parsersql-builderdialectsqlservermysql
yfix/docker-nodejs
Nov 2015 - Mar 2019
Contributions:4 PRs, 24 pushes, 6 branches in 3 years 4 months
docker-nodejsdocker-imagedockernodejsdocker-compose
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