Top 10 Ruby on Rails Companies in Poland – Updated 2025

21Twelve Interactive is an ambitious mobile and web development company that provides services to business sectors in Poland, bold companies and private customers. We have created a world-class team of top mobile application developers, comprised of IT professionals and experienced trainees with a fresh perspective of the world of applications for Android and iOS. We offer custom applications and software to businesses. We design them with intelligent simplicity. We focus on what matters most to your company and its users.

Light IT provides innovative web and mobile software solutions for startups and enterprises. We offer more than just software development, we focus on clients’ needs, go deep into requirements to suggest improvements, plan our workflow to reduce the budget, and never miss the deadlines. For over 14 years on the market, we have delivered 500+ custom solutions for companies from Europe, the United States, Canada, Japan, China, and many others.

*instinctools is a software product development and consulting company focused on digital transformation. Headquartered in Germany and USA with development hubs in Poland and Kazakhstan, *instinctools provides a cross-functional global delivery model which reduces development costs while increasing speed to market.

For over ten years Selleo has delivered professional services on more than 150+ software development projects for clients from Europe, the US, Canada, and Australia, designing and building a number of applications throughout a wide spectrum of business domains, industries, and technologies (Ruby on Rails, ReactJS, React Native, EmberJS, Elixir). We enable clients to efficiently optimize and innovate processes, products, and business ventures by developing single-page applications, designing microservices architecture, and crafting web and mobile applications.

XB Software is a full-cycle development company that has many years of expertise in building custom web and mobile solutions. We have a strong and dedicated team of IT professionals engaged in IT Consulting, Web & Mobile App Development, Business Analysis, UX/UI Design, as well as QA, and Software Testing. We offer Web Development, Front-End Development, Project Management Software Development, App Modernization, and other services.

Merixstudio’s key expertise is the delivery of high-quality and performant web applications and cross-platform mobile apps. Based on the needs of our clients, we can support them in end-to-end product development or seamlessly extend their in-house team of engineers. Our tech stack is focused on JavaScript (Angular, React, Node.js), Python (Django, Flask), and cross-platform frameworks (React Native, Flutter). We also provide fully-fledged support throughout the whole project’s lifecycle that covers project management, quality assurance, and product design services.

S-PRO is an innovative technology partner. We help startups to create innovative products and empower existing businesses with the digitalization of their core processes to much customer-centric economy needs. By partnering with accelerators Founder Institute, Sente.Link, BCCS Cluster, and others help our clients to achieve more business connections and competent advisory. S-PRO team of 150+ talents has the expertise and capabilities to provide a sophisticated personal approach and deliver complex market-recognized solutions.

Plavno is a premier software development house with over 15 years of experience and a highly qualified team of experts in your industry. Fully-fledged teams of specialists cover each stage of product creation, from product management and analysis to design, development, testing, and ongoing support. We have a unique advantage, our pre-formed full teams work exclusively on products in their specific domains, such as Healthcare, E-Learning, FinTech, Travel & Hospitality, Fleet management, and more.

Brights is a software development company located in Warsaw and Kyiv with a team of 100 people. Our key expertise is fintech startups, productivity tools, and custom enterprise software development. Working as a product team allows us to deliver efficient solutions to reach clients’ business goals. For the last 11 years, we have implemented more than 400 projects and gone far enough in web development.

Relevant is an international software development company that designs, builds, and delivers products of world-class standard for Fortune 500 companies and promising startups. We provide software development teams made up of the best engineers from around the world, benefiting globalization and diversity.