Ruby on Rails Developer

About usLLInformatics is a forward-thinking IT consulting firm, trusted by clients across Europe and North America. We specialize in delivering complex projects on time, with exceptional quality, and always meeting the highest compliance standards. Our remote-first team of 130+ experts is passionate about building cutting-edge digital products that drive real results. With a focus on data-driven decisions, measurable outcomes, and a strategic mindset, we’re raising the bar in our industry—backed by a strong, collaborative work culture that fuels our success.Contract Type: B2BLocation: Remote or in our Warsaw officeYour Tasks and Responsibilities:Implementing new features on our client’s platform.Solving programming challenges and continuously developing your skills.Participating in code reviews and collaborating with team members.Maintaining the existing codebase and fixing bugs.Writing unit and integration tests (E2E is a plus).Supporting frontend development using React when needed.Contributing to product improvements through experimentation and iteration.Taking care of application performance and reliability.Collaborating with Product Managers and team members to deliver high-quality solutions.Requirements:3+ years of experience with Ruby on Rails.Good knowledge of Active Record and RSpec.Experience working with production applications (AWS or Heroku is a plus).Familiarity with relational databases (e.g., PostgreSQL).Experience writing tests and understanding of testing best practices.Understanding of the MVC pattern or similar architectures.Basic experience with React (components, API integration).Understanding of REST API principles.English and Polish at a minimum B2 level.Familiarity with Agile methodologies (Scrum, Kanban).Nice to have:Experience with distributed systems.Interest in using AI tools to improve development workflow.Why join us? 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.