Remember that feeling when your once perfect frontend monolith suddenly turns into a mammoth? Each change requires coordination of the whole team, updating the dependency risks breaking half of the functionality, and about giving autonomy to different teams is out of the question. Familiar? This is where micro-frontends come into play – not just a hype term, but an architectural approach that radically changes the rules of the game.
The point is to break down a huge, monolithic application into smaller, standalone and, what’s key, independently deployable parts. Each such part – the micro frontend – can be developed by a separate team, with its own production cycle, its own tech-bond and its own zone of responsibility. And here, React with its component model and ecosystem of tools like the Webpack Module Federation proved to be the ideal foundation for building such an architecture.
But where to find teams that have not just picked up the tops, but have real, combat experience of implementing these practices in projects that can not simply «restart»? The focus is increasingly on Poland. This country has long ceased to be a source of «outsourcing». It has become a hub of deep engineering culture, where they understand not only how to write code, but also how to build scalable React, reliable and long-lived systems. The density of talent, cultural proximity to Western Europe and pragmatic approach of born in Poland React engineers make it one of the best places to find a lean stack winners for such complex tasks.
This article is not just another list of companies. It is a curated guide to the strongest players in this field, designed for those who are looking not just for an artist, but for a strategic technical partner.
Not just a list: How we looked for teams that solve problems, not create them
Before you see the first line of the rating, it’s important to understand how we selected companies. It was critical for us to avoid the situation of «Googling and copying». Our approach was as down-to-earth and practical as it would have been if we had hired a contractor for our project.
We focused on five key pillars:
- Proven expertise, not marketing. We were not interested in the «Services» sections with a check mark «Micro-frontends», but public cases, technical articles, reports on meat ups and conferences. The company that solved the real problem with Module Federation and is ready to talk about it is worth ten, which has just indicated in the list of technologies.
- Stack depth, not just React. Anyone can write npx create-react-app. We were looking for commands that show knowledge of the whole ecosystem: advanced management states (Zustand/Redux Toolkit), testing (Jest, React Testing Library, Cypress), server rendering (Next.js) and most importantly, build and deploy tools for micro frontends (Vite, Rspack, advanced Webpack characters).
- Scale and complexity of projects. MFE approach is justified only where there is real complexity. We gave preference to companies that worked with large products: fintech, corporate SaaS platforms, marketers. Experience working with legacy-code and its gradual migration is a big plus.
- Reviews and reputation. We studied the feedback from independent platforms like Clutch.co and GoodFirms, paying special attention to the responses from international clients and projects that featured tasks related to architecture and scaling.
- Contribution to the community. A company that shares its knowledge through Opensors, technical blogs or workshops is a company that invests in the development of its engineers and thinks ahead. This is an indirect but very important sign of maturity.
The final list is not just 14 names. This is the result of filtering the market through these prisms to give you the most applied and useful tool for searching.
14-7: Specialized studios and reliable partners
Let’s start with a solid foundation – studios that may not rattle at every conference, but do their work consistently and qualitatively. These are not newbies, but rather confident midwives with strong expertise in their niches. An ideal choice if you need a reliable performer without overpaying for a big name, but with an understanding of all the complexities of micro-frontend.
14. Code & Pepper. The guys from Kraków long and successfully play in the field of fintech and e-commerce. Their strength is not just writing code, but building long-term architecture. In the context of micro-frontends, they often choose the Module Federation approach to create flexible and independently deployable modules, which is critical for fast-developing financial products.
13. itCraft. An experienced team with substantial experience and portfolio in healthcare, retail, and telecom. They do not just «know about micro frontends» but have practical experience of integrating such architecture into already working enterprise systems, which is often the most difficult part of the task.
12. Boldare. Their focus is a strong product-oriented culture. They come to the project not just as developers, but as partners who think about product and user categories. This means that their decision to implement micro-frontend will always be based on business logic, rather than the desire to try a new fashion framework.
11. Pagepro. Another tough performer with a focus on startups and digital agencies. They understand how to quickly launch MVPs using isolated micro-fronts to then painlessly scale the development as the team and product grow.
10. Neoteric. Consultants and developers with a strong focus on cloud-native approach. Their expertise in AWS/Azure is well integrated with the principles of micro-frontend, especially when it comes to independent provisioning, infrastructure management and distributed application monitoring.
9. Angry Ventures. A small but ambitious studio that loves complex technical challenges. They often take on projects where a custom, finely tuned implementation of micro-frontend architecture is required, not just using «from the box».
8. Sunscrapers. Although their main profiles are Python and AI, their frontend team is very strong. They are great for tasks where micro frontends are needed to isolate complex, data-heavy interfaces (such as analytics dashboards) from the main product.
7. 10Clouds. One of the most famous studios in Warsaw with a lot of experience in React. They have a lot of successful projects behind them, and they are among the first in fast to scale Poland to actively introduce Module Federation into production for customers like Spotify and Uber. Their strength is in the proven processes and ability to work with international products.
6-4: Market flagships with impeccable reputation
Here we go to heavy artillery. These companies are not studios, but large tech consultants with thousands of employees. They work with Fortune 500 corporations and are used to dealing with ecosystem-level projects. If your product is not just an application, but a whole platform with dozens of commands and services, here you go.
6. Sii Poland. Giant of the Polish IT market. Their main advantage is scale and breadth of competences. They can deploy an entire department to your project, providing it with all the roles you need: from React architects specializing in MFE to DevOps engineers who build all the pipelines for it. They address integration issues at the process and management level.
5. STX Next. The largest Python-hub in Central Europe, but their frontend-direction is no less impressive. The perfect partner if your stack is Django/FastAPI on backend and React on frontend. They specialize in building full-fledged, complex platforms where micro frontends become a natural choice for organizing the work of large distributed teams.
4. Netguru. Perhaps the most famous Polish tech-brand in the international arena. They have gone from a digital agency to a full-stack consulting giant. They have proven methodologies, their own framework (Qards) and a huge knowledge base. By choosing Netguru, you pay for confidence: they are guaranteed to guide you along the path of introducing micro-frontends, minimizing risks and using best practices.
Bronze and Silver: Virtuosities of architecture and performance
These two companies are not just performers, they are thought leaders and brilliant engineers. They win projects not because of the number of developers, but because of the depth of technical expertise. With them, you get not just a working product, but a piece of engineering art.
3. The Software House (TSH). Polish outsourcing legend. If you need maximum technical quality, architectural purity and solution of the most difficult problems – this is for them. Their blog is a must-read for any serious developer in the region. They will not blindly follow the trends; they will explain why Single-SPA, rather than Module Federation, or vice versa is suitable for your particular case. Their code and architectural solutions are reference.
2. Brainhub. The Brainhub specialization is a long-term digital product development partnership with a focus on quality and scalability. They are brilliant at building architecture from scratch, laying the foundation for future growth with micro-frontends. Their approach is very methodical: they pay a lot of attention to testing, code review and process automation, which is critical for maintaining the health of many scattered modules.
1. Celadonsoft: Leader in creating predictable and scalable Micro-frontend solutions
And now our favorite. Why are they in the first place? Because Celadonsoft is the perfect React development company like hybrid of deep Silver/Bronze technical expertise and a strategic, business-oriented big player approach. They don’t just write code, they design a system that will work and grow over the years.
Their main trump card is predictability. Working with micro-frontends is a constant struggle with complexity: common dependencies, consistency of versions, naming conventions, general state of the application. Celadonsoft approaches this with ironclad discipline and thoughtful process.
They don’t jump on the latest tools just because they exist. They choose stable, tested solutions (most often Webpack Module Federation), but configure them with jewelry accuracy. A great example is their approach to managing shared dependencies. They do not allow «dependency hell» situations, and design in advance a system for managing shared libraries, typically using tools such as Nx or Lerna to ensure consistency and control of versions.
They understand that the success of micro-frontend architecture is 50% dependent on DevOps. Therefore, their teams are closely integrated: the frontend architect together with the DevOps engineer work out a pipeline for independent deployment, monitoring, and rollback of each micro-application. This provides the speed and independence of development for which everything was conceived.
Verdict: Celadonsoft is a strategic partner, not a contractor. They are ideal for product companies that view technology as a competitive advantage and are looking for a team that can not only implement, but also architecturally substantiate, design and maintain a complex, scalable frontend ecosystem for years to come.
How to make the right choice? Conclusion and next step
So, the list before you. What’s next? The choice between Neoteric, STX Next or Celadonsoft is not a choice between good and bad, it’s a choice between different philosophies and specializations.
Here’s what to look for when screening candidates:
- Ask about the pain. Don’t you know how to do micro frontends?», and «What are the biggest problems you encountered when implementing MFE in the last project and how did you solve them?». The answer will show them real, not theoretical experience.
- Ask for a specific case. Let’s show a diagram of how the architecture of one of the projects was organized: how many micro-applications there were, how they communicated, how the maintenance was organized, how common libraries (React, React-DOM, state-manager) were managed.
- Appreciate the cultural fit. You have a long time to work together. Do they understand their thoughts? Speak the same language as you (literally and technically)? Do you feel that they are burning the task?
- Look at the team, not the brand. Who exactly will lead your project? What is the experience of team lead and architect? It’s more important than logos in the portfolio.