Ruby on Rails Fullstack Developer

Job Description

We’re looking for a mid/senior Ruby on Rails Developer for a long-term collaboration who’ll help us build new products and improve our existing ones (CMS, Stock Management System - both are mature and well-maintained).If you’re able to:- Write clean and scalable code in Ruby- Learn new technologies- Integrate with external providers (APIs)- Implement simple frontend where needed- Vibe-code some prototypes using technologies you might not be an expert in - but still enjoy exploring… send your CV, you should be a great match :)We care about code quality (we have code reviews, CI/CD and pair programming sessions) and a good atmosphere at work. We put a lot of effort on exploring AI capabilities in making our daily work easier, faster and more fun.Current tech stack and tools:Ruby 3/4 (depending on the project)Ruby on Rails 7/8 (depending on the project)InertiaJS + Vue on the frontend layerClaude CodeRspecPostgresqlRedisSidekiqDockerGitlab (including Gitlab CI/CD)KubernetesWhat we're looking for:At least 4 years of commercial experience in Ruby on RailsWe are looking for someone with mid-level experience or higherCommunicative proficiency in Polish and English at a minimum of B2 levelRequired skills:RubyRuby on RailsRspecHTML, CSSJavascriptDockerUnderstanding how CI/CD worksAgentic coding, including understanding of what skills / MCP servers areNice to have:Any experience in implementing MCP serversExperience with InertiaJSExperience with Vue.js / Stimulus.js or other modern front-end frameworkExperience in using front-end components frameworks such as Bootstrap, Foundation, Bulma, etc.KubernetesUnderstanding of OAuth2OpenAPIExperience in integrating with AI solutions provider, such as OpenAI, Elevenlabs etc. via their APIsWhat you'll be responsible for:Implementing new features (in new projects developed from scratch but also in existing projects - all of them are developed by us)Refactoring and optimizing existing codeHaving an impact on the tech stack (we’re open to introducing new technologies when it makes sense)Contributing to product development (we welcome ideas for improving our products)Performing code reviewsBenefits:Salary range PLN 15 000 – 20 000 + VAT (B2B)Flexibility to choose between working in our Warsaw office (Mokotów), a hybrid model, or fully remote with occasional office visitsMacBook ProOption to sign up for a sports card and medical coverage