The app on the phone
Screens, navigation, and the loading, empty, and error states, on a small screen a person holds.
Hire mobile app developers
Hire a mobile app developer who has shipped an app people install, on iOS, Android, or both. Arca.ph cuts out the staffing-agency middleman. It is a private, invite-only network of engineers from around the world. Profiles are free to view. Your own AI agent, such as Grok, Claude, or ChatGPT, searches and sorts the network and builds a shortlist.
The role
A mobile app developer owns the app on the phone: the screens, the store release, and what happens when the network is bad.
Screens, navigation, and the loading, empty, and error states, on a small screen a person holds.
Swift or Kotlin for one platform. React Native or Flutter when one codebase ships to both stores.
Version numbers, the store listing, and a crash report they can read after people install the build.
What the app does with no network, and when it asks to use the camera, location, or notifications.
They can name the calls a screen makes, and what the person sees when the server is down.
They run the flow on a device, not only a simulator, including a small phone and a slow network.
Is it the right hire?
Pair this hire with frontend developers or backend developers.
Stacks
These are skills developers list in their work history. You can compare them side by side.
What to look for
Look for:
You ask for an introduction, then you decide.
Cost
Success fee
An introduction is when the developer says yes.
Get startedHow hiring works
Sign up with your work email. We check that you're a real company, which keeps developers' details safe. Every profile shows pay, US time overlap, English and test scores, whether the developer is open to time tracking, and what makes that person different. Profiles are free to view.
Sign upBrowse profiles, or use your own AI agent, such as Grok, Claude, or ChatGPT, to search and sort them and build a shortlist. For mobile, ask for a coding test with no AI allowed on a screen, a 2-hour build project with AI allowed, or the Fire Drill (live pair-programming on a real-world problem), such as a screen that breaks when the phone is offline. Arca.ph returns the scores.
TestsTell us who you want to meet. We reach out. If they say yes, that's an introduction. On the marketplace, if you hire them, you pay one fee: 15% of first-year pay, once. There is a free replacement for 3 months. If Arca.ph introduces you to a developer you were already talking with, there is no fee.
If you hireInterviewing
Use these alongside your own technical interview. You make the hiring decision.
More questions are on Developer interview questions.
Listen for the version, the review, and a bug they fixed after people installed it.
Listen for saved data, a clear message, and what happens when the network comes back.
Listen for the device, the app version, and the line they changed.
Listen for a product reason, such as one store, both stores, or a design shared with the website.
Teams also hire
Production React and TypeScript interfaces built to your design system.
Hire frontend developersProduct screens in React and TypeScript, including the empty, loading, and error states.
Hire React developersAPIs, data models, integrations, and the performance work behind them.
Hire backend developersOne engineer across UI, API, and database, for teams that need features shipped end to end.
Hire full-stack developersPay is quoted per month, up to about $3,000 a month. On the marketplace, profiles are free to view. You can ask for proctored tests and recorded reference checks. If you hire someone Arca.ph introduced, you pay 15% of first-year pay, once. Published pay from named sources is on the developer rates page.
You can look at profiles right away. Profiles are free to view. When you want to meet someone, we make the introduction.
A coding test can ask for a screen change. The Fire Drill can be a screen that breaks offline. When you want more proof, Arca.ph runs extra proctored tests and returns the scores. You can ask for a coding test with no AI allowed, a 2-hour build project with AI allowed, the Fire Drill (live pair-programming on a real-world problem), an English test, a thinking-skills test, and a typing test, plus recorded reference checks. A real person watches.
Yes. Filter the work history for Swift and iOS, or for Kotlin and Android. React Native and Flutter profiles fit a job that ships to both.
Every profile shows the hours a developer can work and the US time overlap, so you can pick someone whose day overlaps with yours.
Around the world. Every profile shows where the developer lives and the hours they can work.
Language questions for Python, React, Node.js, JavaScript, and Java are on the interview questions page. Use those with a store-release conversation for a mobile hire.
If Arca.ph introduces you to a developer you were already talking with, there is no fee.
If you hire someone Arca.ph introduced and they are not the right fit, there is a free replacement within 3 months.
If you need help, Done-for-you is 35% of first-year pay, charged once on hire. Arca.ph runs the search and sends a shortlist. You hire and pay the talent directly. There is a 3-month free replacement.
Related
Questions for Python, React, Node.js, and other languages, grouped by junior, mid, and senior.
Published pay from named sources. Each figure has a date and a link.
On the marketplace, a one-time 15% fee of first-year pay is charged only on hire, with a 3-month free replacement.
A coding test with no AI allowed, a 2-hour build project with AI allowed, the Fire Drill, an English test, a thinking-skills test, a typing test, and recorded reference checks.
Profiles are free to view.