CEO at Relevant

How to Hire Flutter Developers: Job Description, Interview Questions, Salaries, and More

November 17, 2021

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Flutter is relatively new and pretty complex, which makes it hard to find developers who truly know how to work with the SDK. And the demand for them is high: if you want to hire Flutter developers, be prepared to compete for the talent. However, there’s another way.

If you aren’t against the idea of remote development, there are teams all over the world that will take on your Flutter project at reasonable costs. A good example is Ukraine.

Now, we wouldn’t want to rush your decision, so sit back, relax and let us outline the critical information you’ll need to find skilled Flutter developers.

Please note that the salaries and hourly rates mentioned in this article don’t equal the cost of hiring offshore software developers through outsourcing companies. Read more about how offshore software development costs are formed here.

The difference between Ukrainian Flutter developers and others

Ukraine has been trying to become the top remote development destination for the last two decades, and they are doing pretty well. Compared to other nations with similar ambitions, Ukrainians have several important advantages. Let’s have a look:

  • Motivation. Being a software developer in Ukraine is usually a shortcut to success. Middle and Senior developers receive much higher pay in comparison to other popular jobs, and are willing to work harder to maintain their way of life.
  • Education. Most Ukrainian tech universities continue teaching the soviet school of engineering with a focus on hard skills, which makes them unique. Ukrainian software engineers know how to solve problems and often come up with unorthodox solutions.
  • Communication. Ukrainians had less advanced English skills in the past but are catching up — especially when it comes to IT. According to polls, over 70% of Ukrainian developers are able to communicate in English at an intermediate level, with a significant percentage being fluent.
the advantages of hiring ukrainian flutter developers

Another interesting thing to note is the Ukrainian work atmosphere. Most flutter developers are perfectly capable of resolving tasks and continuing development independently, with minimal supervision. This is a great advantage for differing time zones — depending on your location, you may not be able to regularly synchronize your working hours with a remote team. However, you can still provide regular input, which is valuable to Ukrainian developers.

Flutter Developer Responsibilities

Flutter is commonly used to design mobile apps and their Web counterparts. To create effectively often involves working on large teams and following the modern development paradigms. Therefore, if you want to hire Flutter developers, they must:

  • Have a basic understanding of Agile development and why it is necessary
  • Be able to write concise, well-documented (or self-documenting) code
  • Understand how to optimize client-facing software
  • Follow the company guidelines and possess basic social skills
flutter developer responsibilities

Why Flutter developers should follow Agile 

Agile is the standard practice across software development and the absolute preference of most developers. If your developers don’t understand Agile, they may take longer to deliver results or to adapt to requirements changes should they arise.

Why Readable Code Matters for Flutter

Code does not exist in a vacuum — even if it works right now, things might change in the future. And if the code is tangled like spaghetti and no one knows how its functions work, then you can’t maintain or update it easily. Therefore, being able to write readable, well-documented code is necessary for any developer.

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Why Flutter Developers Need to Optimize Their Code

Most Flutter applications exist on iOS and Android devices, which means their performance must be balanced against the low-powered mobile CPUs and a short battery life. At the same time, both Google and Apple push for fluid and smooth interfaces, as well as lots of animation. The result calls for a very careful balancing act and makes code optimization a crucial skill.

Why Flutter Developers Must Possess Social Skills

Hollywood has given software developers the image of antisocial nerds. While it’s not entirely uncalled for, developers work in teams and often need to communicate both with one another and other departments. Therefore, you need designers who can deliver their thoughts in a clear manner while looking professional and remaining respectful.

Flutter application, hire flutter developer
Source: https://flutter.dev/

Necessary Skills for a Flutter Developer

Flutter is brand new —  the SDK even comes with its own custom programming language called Dart. And the relative novelty does level the playing field between developers with various experiences in the past.

Therefore, the list of required skills for Flutter development is concise:

  • Knowledge of (and excitement for) Flutter
  • Experience in Android and/or iOS development
  • Experience with version control tools like Git

Flutter Developers’ Salaries in Ukraine and Other Countries

According to Indeed.com, Flutter developers are in very high demand in the US and Western Europe, with their average wages outscaling other software developers by a factor of 1.25 or more.

UkraineUnited StatesWestern Europe
The average annual salary for a middle Flutter developer, USD30 000130 00061 000
* Note that the salaries mentioned above don’t equal the cost of hiring software developers through Relevant. Read more about offshore software development costs in our article.

Developers in Ukraine, however, come a lot cheaper without a significant loss in quality. It’s mostly due to a much lower cost of living. If you are looking to hire Flutter app developer, you won’t find a better option.

Job Description Example for a Senior Flutter Developer

Our company is hiring a Senior Flutter Mobile Developer to create a framework for text adventures available on both iOS and Android — think 80 Days of Lifeline. We require an experienced developer who will help us design this platform from the ground-up and coordinate development at all levels.


  • Have two or more iOS/Android apps developed with Flutter. Either deployed on the AppStore/Google Play or available on Github;
  • 5+ years in mobile software development;
  • Experience with third-party libraries and APIs;
  • Understanding of the Agile development life-cycle;
  • Experience with automated testing and building;
  • Experience with Git, Jenkins, or other version control tools;
  • Ability to write readable code, create extensive documentation for existing code, and refactor the previously written code into readable state.
  • Intermediate+ English skills.


  • Java/Swift experience;
  • Understanding of Android Keyboard API;
  • Experience with optimizing applications for Material Design.

Interview Questions for a Flutter Developer

When it comes to hiring Flutter developers, you are going to need both hard and soft skills. And while it may turn into a balancing act in some cases, you should never favor one set of skills while completely disregarding another.

Questions to Determine a Flutter Developer’s Hard Skills

  • What format should you use for layout files?
    • Trick question — there are no layout files. Flutter uses Widgets instead and does not require separation into code and layout like older Android frameworks.
  • What is the primary difference between Flutter and WebView?
    • Web-applications need to be run through different layers before they are executed, which requires more resources and causes latency. Flutter apps compile into a native ARM code to run faster and more efficiently.
  • What is the purpose of three folders inside the Flutter project?
    • The lib folder stores the Dart files —aka, the project’s core. iOS and Android folders contain tools to accommodate the core to the specific platform and obtain necessary permissions and platform-specific functionality.
  • What is the best way to ensure consistent formatting in Flutter code?
    • The DartFMT command replaces whitespaces with Dart-guidelines formatting.
  • What is the fundamental difference between handling functions in Android and Flutter?
    • In Dart, functions are first-class objects and can be passed as parameters to other functions. Doing so simplifies the callbacks and makes code more readable.
  • What is ScopedModel?
    • ScopedModel or Business Logic Components are common architecture patterns that separate business logic from the UI code. It is employed to improve performance and use less dynamic (Stateful) widgets.

Most of these questions cover the basics of Flutter and Dart, so the answers should correspond to the ones we gave you. If you want to hire a Dart Flutter programmer, you’ll need to conduct an interview before making your decision.

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Questions to Determine a Flutter Developer’s Soft Skills

  • Tell me about a situation where you had to do something you have never done before. How did you handle it? What did you learn from it?
  • Have you ever had to work with someone difficult? What was the issue? How did you resolve it?
  • What are three criteria you find most important for a good working culture?
  • Have you ever created a work strategy that failed? How did you adjust? What precautions did you use?
  • Recall a time when you were facing a significant issue but your manager was unavailable. How did you solve it? How would you handle it now?

Here’ the kicker:

There are no right or wrong answers to these questions. However, they allow you to get a glimpse into the psyche of your future worker while determining how well they would fit your company culture and team chemistry.

Hiring Offshore Flutter Developers

The demand for offshore developers is increasing, and there’s a reason why more businesses are looking for a Flutter developer overseas. Several reasons, actually:

  • Cost-efficiency. This is usually the key reason for hiring Flutter developers overseas. But you should know – a lower price doesn’t mean lower quality; it means the price of living in their country is cheaper. 
  • A larger pool of talent. You can find extremely skilled offshore developers in Eastern Europe, Asia, China, Singapore, Latin America, and other regions, as the US and Western European tech giants have already employed most local developers.
  • Dedicated teams. Instead of hiring multiple specialists separately, you can save time by hiring a dedicated team for your business needs – all in one place.

So, by choosing remote Flutter developers for hire, you get reasonable expenses, extensive expertise, and high-quality development. And here’s another perk: depending on your needs, you can either augment your in-house team or employ an independent dedicated team.

Dedicated Flutter Teams

There are so many advantages to hiring an entire dedicated team like saving your time and increasing productivity, as you no longer need to headhunt each team member individually. You can add extra specialists to the team as you need or reduce their number when the peak load is over. And, on top of that, you can rest assured every outsourced employee possesses the required skills already and has relevant experience.

With a dedicated team, you won’t have to organize working conditions or infrastructure, including vacations, days off, and sick leaves. Moreover, with a Flutter dedicated team in place, you can have as much control as you want. You can either participate in every meeting or leave it all to a dedicated project manager or HR. It’s true – dedicated teams give you that pleasant sense of controlled autonomy. 

Where to Find a Dedicated Flutter Team

If you decide to hire dedicated Flutter programmers, you should take into account their billing rates, geographical location, and time zone difference. Following these criteria, there are several hot spots to find the experts you need: Asia, Latin America, and Eastern Europe. 

Speaking of Eastern Europe, the region can boast of excellent outsourcing destinations with a large number of offshore development companies. More specifically, we’re talking about Ukraine.

How to Hire Flutter Developers in Ukraine — Three Most Common Ways

There are three common ways to hire development teams for staff augmentation:

  • Freelance platforms
  • Recruiting agencies
  • IT project expansion companies

Each option comes with its own advantages, and you should consider all three before making your decision.

How to Hire Freelancers in Ukraine

A wealth of experience, self-motivation, adaptability to change and easy to replace (if needed), makes freelancers attractive for companies who need a quick solution. Yet, they are not perfect.

  • Freelancers are independent. They do not work for you, they have their own schedule and, often, it’s difficult to fit multiple freelancers into your workflow.
  • Freelancers can be unreliable. They tend to disappear and reappear at odd times, and may not care as much about your project as you do.

How to Work With Ukrainian Recruiting Agencies

Do you want a bolder solution? You can establish an office in Ukraine and hire Flutter app developers yourself, both full-time and long-term contracts. It’s a significant investment but it does bring you several advantages:

  • In-house developers communicate better. You can employ team-building exercises and other events to build camaraderie and improve your team’s performance without sacrificing morale.
  • In-house developers can be motivated. You can openly apply different motivation tools and techniques to increase your team’s productivity — like rewarding them with merchandise for exceptional performance or additional off days in exchange for hitting a deadline.

However, there may be issues too:

  • In-house developers require an office. And the office, in turn, requires furniture, PCs, water coolers, microwaves and thousands of other things that cost money. Renting or owning a separate office for your team can quickly become expensive.
  • In-house developers are limited in numbers. Should one of them leave, go on vacation, or get sick, you won’t have people in reserve to replace them and will be forced to adjust deadlines.

How to Expand Flutter Projects With Ukrainian IT Staff Augmentation Companies

Staff augmentation is a happy medium between freelance and in-house — you delegate the Flutter app development to the Ukrainian company while retaining complete control over the developers’ tasks. Most staff augmentation companies have multiple partners and projects at the same time, while keeping a certain number of reserve developers for emergencies.

Staff augmentation combines the best parts of using freelancers and in-house teams:

  • Staff augmentation is productive. You get experienced managers with already built teams, who will give your project 100% of their effort. That said, you can always bring your own management in to oversee the development.
  • Staff augmentation is cheaper. Since the office expenses are covered by the staff augmentation company, the end costs for the client are significantly lower.

There are no downsides to this way of handling remote development, as long as the staff augmentation company understands their job and has a flexible workflow.

hire dedicated flutter programmers

How Relevant Software Provides Projects With Flutter Developers

Relevant Software is a software development company that specializes in staff augmentation. We create projects of varying complexity for clients from all over the globe, and we have a great onboarding workflow to pick the best team for your job.

  1. Send us the requirements. Describe what your project will be, how you see it, and how much you are willing to spend. If you can provide a detailed technical task — that’s great! If you can’t, don’t worry. Our specialists will help you write one and use it to determine what developers are most suitable for your project.
  2. Let us search. We always have a few developers in-house that are available and can start on your project right away. However, if your project needs something unusual — like an assembly developer or an experienced Big Data analyst — we will need about a month to find your perfect candidate from our pool.
  3. Conduct the interviews. We will screen the available candidates and send you the CVs and character profiles on the ones that have passed. Then, you will select the ones you like and we will help coordinate your interviews with them.
  4. Meet the team. Meet the assembled team and start designing your project. If you wish to do so in person, we can send the developers to your office for onboarding, or provide accommodations for your trip to Ukraine.

With Relevant Software, you get Flutter app developers that will deliver your project before the deadline and work up to your specs. We take pride in our work ethic and strive to create software that will be easy to maintain and update in the future.

How We Help Companies Get Developers On Board

Flutter is the next step in mobile software evolution. It can be used for any mobile, web, and desktop applications. However, it particularly excels in client-facing web apps — online stores, streaming clients, office suits, etc.

Here are some examples of our work:

  • Hyko. An iOS app for a Hyko Bear smart lamp that controls the light settings (temperature, intensity, etc.) and teaches kids to save electricity.
  • Biderator. An auction platform for construction workers and their customers. It has a transparent bidding process and allows one customer to bid for different contractors at the same time.
  • FirstHomeCoach. An online assistant for the new UK homeowners that guides them through purchasing a property and helps them secure a mortgage, get insurance, and handle the legal paperwork.

Conclusion – Why You Should Hire Ukrainian Flutter Developers

Hiring Ukrainian Flutter developers is a great choice. They are perfect for when you need to extend Flutter expertise or create an application for your web service. And at the same time, they lack the common problems you see with outsourced teams like limited motivation or a language barrier.

Want to hire offshore Flutter developers? With Relevant Software, you will get the cream of the crop when it comes to Ukrainian developers. We have senior Flutter developers that have experience with dozens of projects and can start working on your project as soon as we reach an agreement.

You can learn more about Flutter from our CTO’s article: Top 8 Flutter Advantages and Why You Should Try Flutter on Your Next Project. Ihor is a huge Flutter enthusiast and uses very simple language to explain why Flutter is so desirable and important for mobile development.

Hiring Flutter Developer FAQ

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CEO at Relevant
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