Principal Software Developer (Ruby on Rails & React) - Freelancer
MonterailWrocław, Lower Silesian Voivodeship, Poland
Posted March 23, 2026
Full Time
About the Company
Monterail delivers custom software development for sectors like fintech and eCommerce with a skilled team.
Job Description
We are looking for a Principal Software Developer with experience in Ruby on Rails and React to work as a freelancer. The ideal candidate should have 8+ years of experience in software development and a senior-level expertise in Ruby on Rails and React.
Requirements
- 8+ years of experience in software development
- Deep, senior-level expertise in Ruby on Rails and React
- Strong sense of end-to-end ownership
- Senior-level commitment to quality
- Clear and demonstrated focus on admin panels and internal tooling
- Experience working closely with internal stakeholders
- Background in smaller-scale environments
- Self-directed, senior mindset