Position: Software Engineer
Category: Ruby
English level: upper
Years of experience: 8

Contributions to the open source projects.
Education - migration of the enormous legacy codebase (including terabytes of DB and assets). Performance optimization (DB queries, memory leaks, etc.) and related bug hunting. Integrations with external services. Mentoring. Ruby/RoR. 

Medicine - DB architecture + GraphQL API for mobile and desktop apps. Ruby, SQL (PostgreSQL), Elixir, Go.

Development of various marketing, eCommerce, and FinTech applications. Consultancy in Ruby and PostgreSQL performance for high-load projects.
Adequate management.