Ruby on Rails Developer – Mid/Senior

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🕒 April 29

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LLInformatics

WebsiteLinkedInAll Job Openings

51 - 200 employees

☁️ SaaS

🤝 B2B

SaaS • Development • B2B

LLInformatics is an IT consultancy specializing in complex software projects, delivering these on time, on budget, and ensuring compliance with various constraints. The company offers a comprehensive suite of services including software development, quality assurance, cloud architecture, and product design. LLInformatics is known for its high client satisfaction, with a proven track record of project success across different industries. Their expertise lies in developing innovative solutions that encompass data-driven automation, supply chain visualization, and localization platforms, among others.

📋 Description

• Implementing new functionalities on our client’s platform. • Solving complex programming challenges while improving your knowledge. • Conducting regular code reviews / PR reviews for your colleagues. • Maintaining existing code and fixing bugs. • Writing unit, integration, and E2E tests. • Contributing to frontend components using React when needed. • Supporting rapid iteration, experimentation, and data-driven development initiatives. • Optimizing application performance, reliability, and scalability. • Collaborating with Product Managers and cross-functional teams to align engineering execution with product vision.

🎯 Requirements

• 6+ years of experience in Ruby on Rails. • Familiarity with Active Record and RSpec. • Experience working on production applications in AWS or Heroku. • Experience working with RDBMS like PostgreSQL. • Experience writing tests / following a TDD approach or strong testing culture. • Experience building server-side applications using the MVC pattern or similar. • React experience (building components, integrating APIs). • Understanding distributed systems and resilient applications. • Practical knowledge of REST API communication. • Polish and English at B2+ minimum level. • Familiarity with Agile methodologies (Scrum, Kanban). • Experience as a tech team lead is a strong plus. • Demonstrated ability to leverage AI tools to improve workflows or development efficiency is a 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.