Powstania Warszawskiego 15
31-539 Kraków
You have a funded roadmap and an empty Flutter seat, and every week of recruiting costs you features, investor demos, and runway. Senior engineers from Apps Value in Kraków join your standups and open pull requests in your repo from the first week, in your working day whether you are in New York, London, Zurich, or Dubai. You interview the exact person who will write your code, and you talk to our founder, not a sales rep.
The short answer. You can hire a senior Flutter developer through Apps Value in about a week. You describe the codebase and the roadmap on a 30 minute call, we propose one matched engineer rather than a stack of CVs, your lead interviews that person, and the first pull requests land in your repo by day seven. Engagement runs month to month at one flat rate, and you own every commit.
Apps Value is a mobile app development agency in Kraków, Poland, working with clients across the United States, Western Europe and the Nordics. The developers available through this page are the same engineers who build our own client products, so what you are hiring is delivery capacity rather than a recruiter's shortlist.
Every founder weighing this decision has the same three options and the same constraint: runway. Here is the honest comparison Apps Value walks through on the first call, including the cases where we are not the right answer. Not sure yet whether Flutter is the right technology for your product? Our dedicated app development team page walks through how we help you decide.
Senior is the most abused word in staffing. Here is the bar Apps Value holds every developer to, written so you can test all six of these in the interview yourself.
Async and isolates, streams, sealed classes, and the judgment to know when each is the right tool. Not someone who learned Flutter from a tutorial last year.
Comfortable shipping in Riverpod, BLoC, or Provider, and able to read whatever the previous developer left behind without demanding a rewrite.
When a plugin does not exist, they write the Swift or Kotlin side themselves: payments, biometrics, background tasks, native integrations.
The features that decide whether an app survives real users. Every developer here has shipped them and been through App Store review more than once.
NestJS and Supabase on the backend, PostgreSQL, and cloud infrastructure on AWS or Google Cloud. One person can own a feature end to end.
Written and spoken English that holds up in your standups and code reviews. Communication problems are the real reason most remote engagements fail, so we treat this as a hard requirement.
You interview the developer before anything is signed, so it helps to know what separates a real answer from a rehearsed one. These are six questions Apps Value would be happy to be asked, each drawn from a problem that actually came up on a shipped project.
They separate reading cached data from creating work that has to arrive later, because those are different builds at different costs. A weak answer treats offline as one switch. A strong one asks which of the two your product actually needs before quoting anything.
They describe a rule for which write wins, and then they describe the correction path: an admin panel or a screen in the app where a person can fix the record by hand. Anyone who claims the conflict simply cannot happen has not run an offline product in the field.
A specific case where no plugin existed and they wrote the Swift or Kotlin side themselves: a payment terminal, biometrics, background location, a device integration. If every answer is a package from pub.dev, the ceiling of what they can build is the ceiling of what someone else already published.
They talk about background execution limits on both platforms and about reconstructing elapsed time from timestamps rather than trusting a running counter. This exact requirement appeared on TimeFix only after real technicians used the app, which is why it is a useful question.
State management and data layer first, then the release and build setup, then the parts users touch every day. The answer you want ends with a reason to keep the codebase. A developer who reaches for a rewrite before reading it is selling months of work that produces no new features.
Repository access, credentials for third party services, and the store developer accounts. Accounts and access arriving late are the single most common cause of a slipped first release, and a developer who raises this unprompted has been through it before.
About a week, and here is what each day of it contains. This is the actual timeline most engagements follow, with no multi week onboarding theater. For how a full product build unfolds after that, see our mobile app development process.
30 minutes on your codebase, stack, team rituals, and what needs to ship this quarter.
One matched developer, not a CV stack. Your lead runs a real technical interview with them. Nothing is signed until you approve.
Your repo, Slack, and boards. The developer joins your standups in your hours: same day as Europe and the Gulf, full morning overlap with the US.
Real tickets, real code, reviewed by your lead the same way as everyone else's. Month to month from here, scale as you need.
Kraków sits on Central European Time. That means a shared working day with London, Zurich and Dubai, and a full morning overlap with the East Coast of the United States. Standups, code reviews, and quick decisions happen live, not over a 24 hour email delay.
The developers you hire through this page are the team behind the Flutter work Apps Value has shipped: fitness platforms, marketplaces, offline first navigation, and field service tools, four of which you can see below with full case studies. There is no separate delivery team and no bench. See the full portfolio.
Live products with real users, built by the same senior engineers you hire through this page. Every case study breaks down the scope, the stack, and the decisions behind it.
Platform connecting users with personal trainers by specialization, personality, and location, with smart scheduling built for busy professionals.
See the case study →
Skill based marketplace connecting freelancers with clients, with real time chat, location matching, and booking with conflict prevention.
See the case study →
Navigation app for Polish waterways with offline maps and WCAG AA accessibility, built for conditions where a signal is a luxury.
See the case study →
Time tracking and job management for field service contractors: GPS clock in, job scheduling, photo documentation, and reporting.
See the case study →The same engineers also build vertical products such as custom HVAC software development and tools for teams working offline in the field, and they work with companies from Kraków across Europe and the United States, including app development for NYC businesses.
Users are asking for features faster than you can ship them, and you or your technical cofounder are still reviewing every pull request at midnight. The developer takes ownership of a feature stream: payments, notifications, offline mode, a redesign, and velocity goes up without a hiring cycle. If you have a defined scope and would rather hand the whole thing off, our Flutter app development company model with fixed price delivery may fit better.
We start with a code audit, stabilize the critical paths, and resume feature work. You get an honest read on the state of the codebase within two weeks, including whether anything genuinely needs rebuilding. Usually it does not, and anyone who tells you otherwise before reading the code is selling a rewrite.
Keep the search running if you want. In the meantime a senior from our team holds the roadmap together at a flat monthly rate instead of a Silicon Valley package, and when your permanent hire finally lands, we document everything and hand over cleanly. Some founders keep both, most just cancel the search. If the product itself is still at the first version stage, MVP app development for startups is usually the better starting point.
Yes, always. Apps Value arranges a direct technical conversation between you and the specific developer who would join your team. You evaluate their skills, communication, and fit with your people, and nothing is signed until you approve the person. If the first match is not right, we propose someone else.
One flat monthly rate depending on full time or part time. No recruiter fees, no benefits overhead, no hidden costs, so the total is typically a fraction of the fully loaded cost of a senior hire in the US or Western Europe. We quote an exact number on the first call and the rate does not change mid engagement. If you are comparing this against a fixed price product build, our mobile app development cost guide breaks down ranges by app type.
Typically within days of your approval after the interview. First pull requests usually land in week one, because our developers spend their careers reading and extending existing Flutter codebases and do not need a month to find their footing.
One month. After that everything runs month to month: extend, add a second developer, drop to part time, or end the engagement with a clean handover and full documentation. No long term contracts and no artificial minimums designed to lock you in.
You do, from the first commit. All work happens in your repositories under your accounts, and everything produced during the engagement is your intellectual property. No IP retention and no vendor lock in.
Tell us and we replace them, and we manage the knowledge handover between the two developers ourselves so your team does not carry that cost. This is the structural advantage over a freelancer: the continuity is our responsibility, not yours.
Yes. If no one on your side can review Dart code, our team lead runs the code review and quality process, and you get demos of working software in plain language every sprint instead of technical reports. And if what you really need is a whole product delivered end to end rather than a developer to manage, we will say so on the first call and point you to our fixed price model instead.
For teams in London, Zurich, or Dubai, Kraków shares your working day, so collaboration is fully live with at most a few hours of shift. For US teams the workflow is built around your business hours: standups at 10am EST, async on Slack, code reviews in GitHub, demos on video calls, with real overlap across the entire East Coast morning and early afternoon. You can read more about how our Flutter development team in Poland works with US and UK clients.
Book a 30 minute call, tell me where the product is and what has to ship this quarter, and you will get a straight answer: who we would put on your team, when they can start, and what it costs. You interview the developer before anything is signed.
Meet your developer this week30 minutes, no preparation needed.