Dedicated Flutter engineers
Hire Flutter developers who ship 60fps apps on iOS and Android
Grape5 Flutter developers are India-based engineers, vetted on live code, who build and ship one Dart codebase to iOS and Android. They handle widget performance, state management, platform channels to native SDKs, and store releases. Dedicated to your product, managed and backed by Grape5, typically starting in 2 to 3 weeks.
In short
Grape5 Flutter developers are India-based engineers, vetted on live code, who build and ship one Dart codebase to iOS and Android.
They handle widget performance, state management, platform channels to native SDKs, and store releases. Dedicated to your product, managed and backed by Grape5, typically starting in 2 to 3 weeks.
When to hire Flutter developers
- You need to launch an iOS and Android MVP from one team instead of staffing separate Swift and Kotlin hires, so a single Flutter codebase covers both stores.
- Your React Native or hybrid app janks and drops frames, and you want a Flutter rebuild that holds 60fps with smooth scrolling and animation.
- Your product needs custom, brand-heavy UI like interactive charts, canvas drawing, or motion that stock widgets cannot do, built with CustomPainter and custom render logic.
- You have an existing native app and want to add Flutter screens (add-to-app) and wire platform channels to native SDKs such as Bluetooth, camera, or a payments library.
How we vet Flutter developers
Every engineer we put forward is screened by a senior Grape5 engineer before you meet them. For Flutter developers, we look specifically at:
- Rebuild discipline: they use const constructors and keys correctly, know exactly what triggers a widget rebuild, and open the DevTools timeline to find jank and fix it with RepaintBoundary or by splitting widgets.
- State management judgment: they can justify Riverpod vs Bloc/Cubit vs Provider for a given screen, keep rebuilds scoped, model loading and error states, and dispose controllers and stream subscriptions so nothing leaks.
- Native interop: they can write a MethodChannel or use Pigeon to call native iOS (Swift) and Android (Kotlin) code, handle threading and platform differences, and integrate a third-party native SDK when no plugin exists.
- Async and performance: they move CPU-heavy work to isolates, use ListView.builder and slivers for long lists, and keep Futures and Streams off the UI thread so frames do not drop.
- Testing and release: they write widget tests, golden tests, and integration_test flows, and have actually shipped through App Store and Play Store with flavors and CI such as fastlane or Codemagic.
Grape5 vs a freelancer marketplace
Grape5
- Who the engineer works for
- Vetted, dedicated, and backed by Grape5 for your engagement.
- Vetting
- Screened by our own senior engineers, code, system design and communication, before you ever meet them.
- Timezone
- 4+ hours of daily overlap with your US working hours, in your tools and standups.
- If it isn't working
- We replace them from the bench, usually within days, at no extra cost.
- Continuity
- The same team, retained and growing with your product.
A freelancer marketplace
- Who the engineer works for
- An independent contractor juggling several clients at once.
- Vetting
- Self-reported skills, a résumé and a star rating.
- Timezone
- Whatever hours the contractor decides to keep.
- If it isn't working
- You re-post the role and start the search from scratch.
- Continuity
- Churn between contracts, the context leaves when they do.
| Grape5 | A freelancer marketplace | |
|---|---|---|
| Who the engineer works for | Vetted, dedicated, and backed by Grape5 for your engagement. | An independent contractor juggling several clients at once. |
| Vetting | Screened by our own senior engineers, code, system design and communication, before you ever meet them. | Self-reported skills, a résumé and a star rating. |
| Timezone | 4+ hours of daily overlap with your US working hours, in your tools and standups. | Whatever hours the contractor decides to keep. |
| If it isn't working | We replace them from the bench, usually within days, at no extra cost. | You re-post the role and start the search from scratch. |
| Continuity | The same team, retained and growing with your product. | Churn between contracts, the context leaves when they do. |
Related roles you can hire
Pre-vetted engineers across adjacent skills, dedicated to your product and your US working hours.
Frequently asked questions
It depends on your app and your team. Flutter gives you one Dart codebase, its own rendering engine, and consistent UI across iOS and Android, which suits custom, animation-heavy apps. React Native leans on JavaScript and native components and fits teams already living in React. Tell us the app and the constraints and we will be straight about which fits, including when Flutter is the wrong call.
Yes, and that is part of what we vet for. Flutter apps still need platform channels for native SDKs, Info.plist and manifest permissions, code signing, and App Store and Play Store review. We check that a candidate has shipped to both stores and can write the Swift and Kotlin glue when a ready-made plugin does not exist.
Frame drops usually come from rebuilding too much of the widget tree, doing heavy work on the UI thread, or loading unbounded images and lists. We vet for developers who profile with DevTools, use const widgets and RepaintBoundary, push CPU work to isolates, and test on lower-end devices rather than only a flagship phone or the simulator.
Yes. Flutter supports add-to-app, where you embed Flutter screens or a module into a native iOS or Android codebase and pass data over platform channels. It has real tradeoffs around build setup, memory, and navigating between native and Flutter, so we look for developers who have actually done this, not only greenfield apps.
You are not on your own. Every Grape5 Flutter developer is dedicated to your product for the engagement, managed and backed by us, and vetted before you meet them on live code, system design, and communication. If the fit is wrong, we replace them free. You get at least 4 hours of daily overlap with US working hours and a typical start in 2 to 3 weeks.
Tell us the role. Get vetted profiles.
Send us the seniority and stack you need. We’ll come back with a shortlist of vetted Flutter developers who’ve shipped it, and a plan to start in 2 to 3 weeks.