NextAge developer coding a Flutter app

Company specialized in Flutter

NextAge builds cross-platform apps in Flutter, with dedicated teams and a proprietary methodology that guarantees delivery predictability.

+19 years of experience
+600 companies served
+150 professionals
+13 countries

What does a Flutter development company deliver?

See the types of projects NextAge delivers with a dedicated squad, fixed scope and guaranteed SLA. Understand when Flutter is the most solid technical choice for your roadmap.

Flutter logo
NextAge Flutter specialist
Mobile app development

Flutter is Google's framework for building native iOS and Android apps from a single codebase. NextAge designs and builds high-performance mobile apps, with a smooth interface and a shorter delivery time than duplicated native development.

Technologies: Dart, Flutter SDK, Provider, Riverpod, BLoC, GetX, Firebase

Web apps with Flutter

Flutter compiles to the web while keeping the same codebase used on mobile, enabling cross-platform products without duplicating development effort. NextAge delivers responsive web applications that are visually consistent with the mobile versions, lowering long-term maintenance costs.

Technologies: Flutter Web, CanvasKit, HTML Renderer, PWA (Progressive Web App)

Cross-platform desktop apps

Flutter can compile native applications for Windows, macOS and Linux from the same mobile and web codebase. NextAge extends existing products to desktop with visual and functional integrity, broadening the solution's reach without rearchitecting.

Technologies: Flutter Desktop, integration with native operating system APIs

MVPs and digital products

Flutter shortens the time between an idea and a market-validated product, thanks to unified cross-platform development. NextAge structures MVPs with a scalable architecture from day one, avoiding rework when the product moves on to the next investment stages.

Technologies: Flutter SDK, Firebase, payment gateway integration, analytics

API and back-end integration

Flutter apps depend on stable back-end integrations for authentication, data and business rules. NextAge implements secure, resilient integrations, with error handling and local caching to guarantee performance even on unstable connections.

Technologies: REST, GraphQL, WebSockets, Dio, OAuth2, JWT

Migrating native apps to Flutter

Native apps in Swift, Kotlin or Java can be migrated to Flutter to unify maintenance in a single codebase. NextAge runs the migration incrementally, with continuous testing and controlled risk, preserving the user experience throughout the transition.

Technologies: Flutter SDK, automated testing, incremental integration with native modules

Interface design and Design Systems

Flutter offers full control over visual rendering, making it possible to implement pixel-perfect design systems on any platform. NextAge translates visual identity and UI components into reusable code, guaranteeing consistency between product and design teams.

Technologies: Flutter Widgets, Material Design, Cupertino, Figma-to-Flutter workflows

… and whatever else it takes for your digital transformation to happen now.

NextAge + Flutter solutions

Proprietary methodologies and specialized services to maximize results in your Flutter projects

Staff Augmentation

Allocation of specialist Flutter teams. Unlike the traditional model, you get senior developers, mobile architects and QAs focused on automated testing, all managed by NextAge. We guarantee continuous code review and architecture standards for scalable cross-platform applications.

Choose it to scale Flutter teams without the risks of traditional staffing

Java.NET / C#JavaScriptTypeScriptPythonRubyPHPGoKotlinSwift
Spring BootDjangoFlaskFastAPIRuby on RailsLaravelReact.jsAngularVue.jsNode.js
NextAge specialist ready to talk about your Flutter project

Get the best Flutter developers on your project

Hundreds of Flutter projects delivered

We have a solid Flutter portfolio. Everything you need for software at the highest technical and strategic level.

Mockup of the app and web system built for FanBase
FanBase

Ongoing development of the Flutter app and web system that centralizes fan data, with SMS/WhatsApp campaigns, giveaways, ticket sales and integrations with marketing automation and email platforms.

Services: Software Projects

Want results like these in your company?

What sets our Flutter developers apart?

→ The differentials that made NextAge the number 1 choice of market leaders

Validated professionals

Our team is rigorously trained and validated before joining the project. You work with professionals who have already solved complex problems similar to yours.

Learning curve

Unlike traditional staffing, our teams are actively managed by us. Tech leads monitor developer performance and alignment with your goals, accelerating the learning curve.

Quality and testing culture

AI-powered automated testing, code review and CI/CD are part of our DNA. We deliver tested, production-ready code, reducing bugs and rework.

More agility

We adopt truly agile methodologies. Well-planned sprints, incremental deliveries and transparent communication. You follow progress in real time.

Knowledge as a foundation

Our Flutter developers have experience with back-end and APIs (REST, GraphQL, Firebase), cloud (AWS, Google Cloud), native iOS and Android integration, and CI/CD tooling for app store publishing. A complete view of the mobile ecosystem.

Cultural alignment

Our teams understand the context and culture of companies. Clear communication, productive meetings and natural alignment with technical and business stakeholders.

// ABOUT
NX

Why NextAge?

Learn our story →

Founded in 2007, NextAge was born to make software development more disruptive, human, and effective.

Innovation has always been at our core. We revolutionized the technology market with Staff Augmentation, our exclusive methodology that brings up to 40% more productivity to teams.

And we didn't stop there! We went further with NextFlow AI, a new way of developing that combines AI and human expertise in every line of code.

Today, we are the partner that transforms complexity into clarity and accelerates your operation with the best talent.

NextAge office

Learn more

Want to understand more about how NextAge can help your business? Explore articles from our blog, testimonials from our clients and our other services to carry out your digital transformation in the best way.

Loading content...

Questions and answers

Is Flutter worth it for building a corporate app?
Yes, in most cases. Flutter lets you build for iOS, Android and Web from a single codebase, reducing development time and long-term maintenance costs. NextAge evaluates this trade-off case by case during planning, before recommending the ideal stack for each project.
What is the difference between Flutter and native development (Swift/Kotlin)?
Native development compiles code specific to each operating system, which can bring slightly better performance in very specific cases. Flutter uses a single codebase for multiple platforms, which speeds up delivery and reduces the cost of keeping two separate teams. For most digital products, the speed gain outweighs the performance difference.
How much does it cost to build an app in Flutter?
The cost varies with the complexity of the features, the integrations required and the seniority of the team. Squads of senior full-time developers, such as NextAge's, tend to be easier to scale cost-wise than one-off in-house hires, but the exact amount depends on the project scope.
What are the risks of outsourcing Flutter app development?
The most common risks are developer turnover mid-project, rework due to missing technical documentation and loss of control over deadlines and scope. Companies like NextAge mitigate this with stable teams, automatic documentation of technical decisions and a contractual SLA.
Can a native app (Swift or Kotlin) be migrated to Flutter without stopping operations?
Yes. The migration can be done incrementally, keeping native modules running while new screens are rewritten in Flutter, with continuous testing at every stage. This unifies maintenance in a single codebase without interrupting the app in production.
How long does it take to build a Flutter development team?
The timeline depends on the availability of qualified professionals on the market and on the vendor's selection process. Vendors with an already vetted talent pool, like NextAge, usually cut this down to a few weeks, since professionals go through technical validation before being introduced to the client.
How do you guarantee code quality in an outsourced Flutter project?
Best practices include continuous code review, automated UI testing and technical documentation updated every sprint. Methodologies that apply AI to the process, such as NextAge's NextFlow AI, reduce rework by catching issues before they reach production.
Do I need an in-house technical team to hire a Flutter development squad?
Not necessarily. You can hire a complete squad (developers, QA, tech lead) to work autonomously, or complement an existing in-house team. The choice depends on the technical maturity and management capacity of the hiring company.
How does ongoing support for a Flutter app work after launch?
After launch, the app needs corrective maintenance (bug fixes), SDK updates and continuous performance optimization. This service is usually contracted separately, with a defined SLA, such as NextAge's Application Managed Services.
What should you ask before hiring a Flutter development vendor?
Ask about how the developers are employed (full-time or freelance), the replacement policy if a professional leaves, the code review process and whether there is a contractual SLA. These answers show how much predictability and risk the partnership involves.

Have a Flutter project to get off the ground? NextAge guarantees delivery