Senior Ruby on Rails Developer

Summary

Join LLInformatics, a leading IT consulting firm, as a Ruby on Rails Developer. Work remotely or in our Warsaw office on challenging projects for clients across Europe and North America. Implement new functionalities, build applications from scratch, and solve complex programming challenges. Collaborate with colleagues through code reviews and maintain existing code. We offer flexible working hours, a remote-first environment, and a supportive company culture.

Requirements

• 6+ years of experience in Ruby on Rails
• Familiarity with Active Record and Rspec
• Experience working on a production application in AWS or Heroku
• Experience working with RDBMS like PostgreSQL
• Experience with writing tests/TDD or a culture of testing your code
• Experience in building server-side apps, using the MVC pattern, or something similar
• Solid understanding of how web applications work
• Understanding distributed systems and resilient applications
• Having practical knowledge of how to communicate with REST API
• Polish and English at a B2+ minimum level
• Familiarity with agile methodologies (Scrum, Kanban)

Responsibilities

• Implementing new functionalities on our client’s platform
• Working on a project from scratch
• Solving complex programming challenges while improving your knowledge
• Doing regular code reviews/PR reviews for your colleagues
• Maintaining existing code and bug-fixing
• Writing unit, integration, and E2E tests

Preferred Qualifications

Experience as a tech team lead is a strong plus

Benefits

• Flexible Working Hours – We focus on results! Manage your time, keep your team informed about your availability, and attend key meetings
• Work from Anywhere – Choose your ideal setup! Work 100% remotely within the EU , go hybrid , or enjoy our Warsaw office , fully equipped for productivity
• Comprehensive Onboarding – From day one, we ensure you feel comfortable and supported, so you can quickly become part of the team
• Flat Structure – We value initiative and open communication. Every voice matters here!
• Positive Company Culture & Team Spirit – We create an environment where everyone feels appreciated and comfortable
• Modern Work Methods – We use cutting-edge project management techniques inspired by the IT world
• Transparent Communication – Regular 360° feedback sessions and mentor support to help you grow
• Top-Notch Equipment – Get a MacBook for your work. If you choose to work from our Warsaw office , you'll also have access to a 34” (16:9) widescreen monitor and an ergonomic standing desk
• Weekly English Lessons – Optional classes with a native speaker to help you improve your skills