Position: Software Developer
Category: Ruby
English level: upper
Years of experience: 4

Wrote an SQL like DSL on Ruby to replace long Mongodb aggregations.

Optimized an endpoint with response time of about 2 minutes down to ~50 milliseconds using the said DSL.

Wrote a native Ruby extension in Rust.
Refactoring
Feature development
Testing
Optimizations
Analysis
I don't want a short term job.