Hire Mobile App Developers

Hire mobile app developers who have shipped to the App Store and Google Play and supported what they shipped, which is a different skill from building a demo. PS3G’s mobile engineers work natively in Swift and Kotlin and cross-platform in Flutter and React Native, and they join your team as named individuals or as a dedicated mobile team. The model serves organizations of every size: a founder with a validated idea and a design, a company whose app was built by an agency that has moved on, or a department inside a larger organization that needs a field app connected to internal systems.

Hire mobile app developers who are managed, not just placed

The mobile engineers you hire through PS3G come from our mobile app development practice, which has built apps for clients and for our own products, including a kids’ learning app with 5-star ratings on the App Store and Google Play. They are PS3G employees, screened by our senior mobile engineers and supported by a technical lead and an account manager for the length of the engagement. An engineering firm can do what a staffing agency cannot: when a store review rejects a build or a crash appears on one device family, the engineer has colleagues who have handled it.

Mobile apps are front ends to something. Our engineers work daily against .NET, Node.js, Python and Java back ends, push services, payment providers and analytics, and we can staff the API side from the same bench.

What they can do for you

Mobile app developers for hire through PS3G are matched to the platform and the stage of the app.

• New native apps. iOS in Swift with SwiftUI or UIKit, Android in Kotlin with Jetpack Compose, when performance, platform features or device integration justify two codebases.
• New cross-platform apps. One codebase for both stores in Flutter or React Native, with native modules where the platform demands them. The Flutter and React Native pages cover those specifically.
• Taking over an existing app. Reading an inherited codebase, restoring the build, fixing crashes, updating dependencies and SDKs for new OS versions, and getting releases moving again.
• Device and platform features. Camera, Bluetooth, location, background tasks, offline storage and sync, biometrics, push notifications and in-app purchases.
• Store operations. Signing, provisioning, review guidelines, phased rollouts, crash reporting and the release cadence that keeps an app healthy.
• Regulated apps. Apps that handle health, financial or personal data, with encryption, authentication and logging designed in. We build and run our HIPAA-compliant EHR and telehealth platform, DocVilla, so the requirements are familiar.

Seniority levels

A mid-level mobile developer builds screens and features from designs and an API contract on one platform, writes tests and follows the app’s architecture. A senior developer sets the architecture, the navigation and state approach, the offline strategy and the release pipeline, and reviews the team’s work. A lead mobile engineer owns both platforms or the cross-platform codebase, the native-module decisions and the relationship with your back-end, design and product teams.

How hiring works

1. Brief. A first conversation on the platforms, the framework if chosen, the state of the existing app and its store accounts, the back end, the designs, and the reporting line and hours you need.
2. Vetted profiles in days. A short list of mobile engineers with the apps they have shipped, the platforms and frameworks they know, their device-feature experience and their availability.
3. Interviews. Your team interviews each candidate. We suggest walking through one of their shipped apps and the decisions behind it, then a short session on a screen in your codebase or a sample one.
4. Start. Access to repositories, store accounts, signing certificates, test devices and the back end, a build on day one, and first tickets that produce a test build in the first week.
5. Scale monthly. Add an Android developer when the iOS app is ahead, reduce to maintenance after launch, or convert individuals into a dedicated mobile team, with notice.

Tell us about the app and we will send profiles for the right platform.

Vetting: a technical screen by our own engineers

Senior PS3G mobile engineers screen every candidate on the platform they will work on. iOS candidates review a Swift codebase with planted issues (a retain cycle in a closure, work on the main thread that should not be, a view that redraws on every state change, a missing privacy string that would fail review) and explain each. Android candidates do the same in Kotlin: lifecycle mistakes, leaked contexts, blocking calls in the UI thread, a misuse of coroutines. All candidates are asked how they handle offline data and sync, how they structure navigation and state, how they test, and what their release process looks like from branch to phased rollout.

The pitfalls when you hire app developers are specific to mobile. Portfolios often show apps the candidate contributed one screen to. Many developers have never managed signing, provisioning or a store rejection, so the last mile of every release lands on you. Offline behavior and poor connectivity are rarely designed for and show up as one-star reviews. Cross-platform candidates sometimes cannot write the native module their framework needs. Our screen checks each of these.

Individual developers vs a dedicated team vs a fixed-scope project

You can hire iOS developers or Android developers individually into your team, engage a dedicated mobile team led by PS3G, or hand us a defined app to deliver as a project.

Option	Who manages	Fits when	Example
Individual mobile developers	Your technical lead	You have the app, the back end and a process, and need more hands on one platform	A senior Kotlin engineer joining your team to bring the Android app up to parity with iOS
Dedicated mobile team	A PS3G lead, against your priorities	You own the product but want both apps and their releases run as a stream of work	An iOS developer, an Android developer, a QA engineer and a lead maintaining both apps and shipping monthly
Fixed-scope project	PS3G owns delivery	The features and designs are defined and you want a price for the whole app	A Flutter field-service app with offline forms and photo capture, delivered to both stores

Individuals and teams are month-to-month engagements under our staff augmentation terms. Projects are quoted as a whole. Once an app is live, store releases, OS-version updates and support can run as a managed service under a defined SLA, and the native-versus-cross-platform decision can be bought as a short advisory engagement before you commit to a framework or a hire. We start with a first conversation, a short assessment and a written proposal that prices roles by seniority and location, monthly, with no published hourly rates.

Related services

• Hire developers and dedicated teams: every technology we staff.
• Mobile app development: the practice our mobile engineers come from.
• iOS app development and Android app development: fixed-scope native builds.
• IT staff augmentation: monthly terms, replacements and IP ownership.
• IT staffing: QA engineers and designers alongside your developers.
• Software testing: device-lab and automated mobile testing from our testing center of excellence.

Frequently asked questions

Should I hire Swift developers and Kotlin developers, or one cross-platform developer?

Native pairs win when the app depends on platform features, heavy graphics or the latest OS capabilities, and when you can support two codebases. Cross-platform wins when the app is mostly screens and data, the team is small, and shipping both stores from one codebase matters more. We will say which fits in the first call.

Can your developers take over an app another company built?

Yes, and it is common. The first weeks go to getting the build working, taking control of the store accounts and signing, updating SDKs and dependencies, fixing the crashes that show in crash reporting, and documenting what was found. Feature work starts once releases are moving again.

Do your mobile developers handle App Store and Google Play submissions?

Yes. Senior engineers manage certificates, provisioning, store listings, review responses and phased rollouts, and set up a pipeline that builds and signs automatically. The store accounts stay in your name; our engineers work as team members on them, so nothing depends on PS3G after the engagement.

Can you build apps that handle health or financial data?

Yes. Our engineers apply encryption at rest and in transit, strong authentication, secure storage of tokens, logging that avoids sensitive data, and the back-end controls to match. We build and run our own regulated platform, so the questions a security review will ask are ones we have answered before.

Where are your mobile developers located?

Both the United States and our India delivery center, managed from Wilmington, Delaware. Mobile work involves physical devices, so we confirm device availability and test-lab access for each engineer regardless of location. India-based engineers keep a schedule that overlaps US hours and join stand-ups live. You choose the mix per role.