Álvaro
Data Scientist
“In a climate this uncertain, Shakers gives you a layer of reassurance and confidence. What I like most, without a doubt, is the flexibility and getting to work on top-tier projects.”
Join ShakersShakers for expert talent
Projects where the cross-platform app is yours: which screen gets composed, which state gets tamed with Riverpod and who publishes on both stores. Shakers connects you with teams whose product needs an app for iOS and Android and exactly your stack.
Going independent with Flutter usually starts in an English marketplace or the Reddit thread asking whether the framework pays a living. Neither tells you how project collaboration works in Spanish, with defined scope and an identifiable company.
What follows is not a study route: it is what gets sustained on a real brief, what you are asked to prove and where your territory ends.




















Tech projects published on Shakers
Tech, Product and Data specialisms are part of Shakers
Average length of a project with Shakers
Our AI Builders' satisfaction on Trustpilot
See how other AI Builders access better projects, build their reputation and grow their careers.
Álvaro
Data Scientist
“In a climate this uncertain, Shakers gives you a layer of reassurance and confidence. What I like most, without a doubt, is the flexibility and getting to work on top-tier projects.”
Join Shakers
Amelia
AI Agent Developer
“I have been building AI agents for years. Thanks to Shakers I stopped chasing clients and started genuinely choosing which projects I wanted to work on. I work with some of the best companies in Europe, at my own rate, and I focus on what I am good at and what I love: building.”
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Luz
Backend Developer & Data Engineer
“Shakers adds a lot of value because it connects you with sharper projects, already filtered and better defined. It saves you a big part of the upfront work of understanding the client, quoting and weighing up whether it is worth it, and that means that as a contractor you can go far more directly to the opportunities that genuinely fit you.”
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Rubén
Software Developer
“Life as a contractor has a lot going on and it is not always easy. We like to focus on what we are good at, but you also have to manage clients, invoicing and go looking for work. For me, Shakers has been key because it does that prospecting for me, it gives the client confidence from the very first moment, and it lets us be part of a community with real enthusiasm.”
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Alejandro
AI Developer
“Shakers was key to getting my company off the ground: it gave me the flexibility to keep contracting while I built my next chapter. Without Shakers, I would have had to raise funding or push the project back.”
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Toño
Product Designer
“With Shakers I have landed recurring projects that give me peace of mind and room to grow professionally. It is not just about reaching quality clients: it is feeling that you have a network behind you, one that connects you with real opportunities and helps you move forward as a freelancer.”
Join ShakersA Flutter Developer builds apps for iOS and Android with a single codebase: they write Dart, compose the interface with widgets, manage state with Riverpod or BLoC and publish on both stores from the same repository. The craft goes from a startup's MVP to the migration of a native app to the framework, with Firebase as the frequent backend. The boundary: the app written per platform in Kotlin or Swift belongs to the native developer, and the product's web, to the frontend.
You touch a business's whole app: MVPs that validate a product, client apps with Firebase behind and migrations from native that unify two teams into one base. What separates a senior: publishing on both stores without drama, with states tamed, performance at 60 FPS and the hot reload that speeds up every delivery.
Free to join, no hidden fees
Tell us who you are, what you can do, the projects you want to work on and what your availability and rate are.
We certify your experience and your use of AI so companies understand and trust what you bring.
We connect you with well-paid projects that fit your expertise and your preferences.
Work on real projects, with teams that need your expertise, without wasting time looking for opportunities.
Work with companies that need your stack and experience to take their projects to production.
Our AI matching connects your profile with the projects that fit your preferences.
Set your own terms based on your seniority. We manage contracts, payments and paperwork.
The MVP to validate, the client app that ages or the two codebases that must be unified: a concrete app problem, not a list of technologies.
Composable widgets, tamed states and releases on both stores. What you deliver, the client's team maintains when the milestone closes, without night calls.
Dart and widgets at the base, Riverpod or BLoC by state, Material and Cupertino per platform, Firebase behind and pub.dev for the rest.
Having published on the stores and knowing how to tell it: what you decided, what you measured at 60 FPS and what you changed after the first real user.
Choosing between the platform channel, a plugin or native code by real cost, not fashion. Sometimes the bridge to Kotlin or Swift wins, and defending that.
You build and publish the shared app; you do not write the native end to end nor serve the web. If the project asks for something else, you say so at kickoff.
Any other questions? Write to us and we will reply.
The screen asked for today, the state that gets simplified tomorrow and Friday's build for both stores. Less fighting two codebases and more app the team maintains without fear.
173 active job ads in Spain ask for Flutter as a skill and 51 for its language, Dart, according to Shakers market analysis (n=31,162, September 2026). Consultancies and telcos publish the title: the standard of cross-platform.
Two doors: the native developer who unifies two apps into one, and the frontend developer who jumps to mobile with a typed language. The junior door exists, though many of its posts come in English.
You do not write Kotlin or Swift end to end nor serve the product's web. Your product is the app of one codebase. If the brief asks for separate platforms, you say so at kickoff.
A living app is not published alone: whoever decides the route, whoever picks the other framework and whoever holds each platform cross you.
The generalist home of mobile: it frames the native or cross-platform decision. If your profile is not pure Flutter yet, your matching starts there.
The other cross-platform: JavaScript and React against Dart and widgets. They share the decision of one base for two stores; the ecosystem decides the side.
The Kotlin territory when the app goes per platform: your native bridge lives in their repository, and the hybrid already appears in the same job ads.
The other native shore: Swift and Apple's platform. As with Android, the hybrid exists and gets declared at kickoff, not mid-release.
When the app comes with its API and its panel in the same brief, this profile covers mobile and server: Flutter stays as the client half of the product.
Boundaries between these roles are agreed per project: the job title doesn't set them.
Take the next step with Shakers
Pass Shakers certification and choose which Flutter projects you take on.