58 ruby English-speaking jobs in Kraków

React.js 18, Entity Framework Vue.js, HTML5, CSS3, JavaScript, TypeScript • Backend: MS .NET 8 Core / Ruby

Access to a modern tech stack and a variety of functional areas, including: Backend: Ruby/Rails, Golang ... Polyglot mindset with proficiency in modern backend stacks; while Ruby on Rails is our core, we welcome

Engineer 7 years of programming experience with at least one modern programing languages (Go, Python, Ruby

background Exposure to AI/ML-powered products Experience working without heavy PM structure Python or Ruby

Early‑stage startup or founder experience Experience with LLM‑powered product features Python or Ruby

Engineer 9 years of programming experience with at least one modern programing languages (Go, Python, Ruby

Access to a modern tech stack and a variety of functional areas, including: Backend: Ruby/Rails, Golang ... Polyglot mindset with proficiency in modern backend stacks; while Ruby on Rails is our core, we welcome

Proficiency in Ruby and familiarity with our core stack: AWS, PostgreSQL, Kafka.

background Exposure to AI/ML‑powered products Experience working without heavy PM structure Python or Ruby

Strong proficiency in at least one of Upside’s core technology stack: Ruby, Python, JavaScript or the

Nice to have Experience with Java, C++, C#, Rust, Ruby, and Go.

Engineer 4 years of programming experience with at least one modern programing languages (Go, Python, Ruby

experience as QA. 2 years of experience using Playwright/TypeScript framework, but also a Selenium/Ruby

background Exposure to AI/ML-powered products Experience working without heavy PM structure Python or Ruby

Have Early‑stage startup or founder experience Experience with LLM‑powered product features Python or Ruby

. → Experience in at least one of Upside's core technology stack: Ruby, Python, JavaScript or the

Proficiency in Ruby specifically Rails, with Python being a bonus.

Proficiency in Ruby specifically Rails, with Python being a bonus.

Have Early-stage startup or founder experience Experience with LLM-powered product features Python or Ruby

Experience with additional languages such as Go, Python, or Ruby.