Hire Android developers

Android is where most of the world’s phone users are, and where the difference between developers shows up fast. Thousands of device models, aggressive battery management, and a Play Store review process with its own rules mean an app that ran fine in the emulator can crash, drain batteries, or get rejected in the wild. Plenty of people can build a screen in Jetpack Compose. Far fewer can ship an app that stays fast and stable across the devices your actual users own. turnkey.dev vets for the second group.

What an Android developer actually does for you

A strong Android hire will:

• Build the app in modern Kotlin: Jetpack Compose for UI, coroutines and flows for async work, and an architecture the next developer can pick up without a guided tour.
• Handle the platform’s sharp edges. Process death, configuration changes, background execution limits, and permission flows, the things that separate a demo from a product.
• Get data and networking right: Room or SQLDelight for local storage, sane offline behavior, and API layers that fail gracefully on bad connections.
• Own the release pipeline. Play Store listings, staged rollouts, crash monitoring, and the review and policy hurdles that stall teams doing it for the first time.
• Wire up the revenue and retention plumbing: push notifications that actually deliver, Play Billing for subscriptions and purchases, and deep links that land users where they expect.
• Keep it fast and usable for everyone. Startup time, jank, memory on low-end devices, and accessibility support, because most Android users are not on flagship phones.

The hard parts of Android work

The reason senior Android developers cost what they do is that most of the difficulty is invisible in a demo.

Lifecycle and process death. Android kills apps in the background whenever it wants memory. A weak developer’s app comes back to a blank screen or a crash; a strong developer’s app restores state so cleanly the user never notices. The same discipline covers rotation, split screen, and every other configuration change. Interviewers who skip this topic hire people who learn it in your production app.

Fragmentation. Your users run different Android versions, different manufacturer skins, different screen shapes, and wildly different hardware. Manufacturers like Samsung and Xiaomi add their own battery killers on top of the platform’s Doze and App Standby rules, which quietly break background sync and notification delivery. Experienced developers test on real low-end hardware, watch field data in Play Console vitals, and treat “works on a Pixel” as the beginning of testing, not the end.

Background work. Uploads, sync, location, media playback: everything that runs while the app is closed has to be negotiated with the system through WorkManager, foreground services, and exact-alarm permissions that keep tightening with each OS release. This is where apps built by web developers moonlighting on Android tend to fall over.

The Play Store itself. Target SDK deadlines arrive every year and non-compliant apps stop getting updates. Data safety declarations, permission justifications, and policy reviews can block a release for days. Someone on your team has to own staged rollouts, release health, and rollback plans. A senior Android developer has done all of this before, usually more than once.

Legacy migration. A large share of real Android work is not greenfield. It is a five year old app in Java and XML views that needs an incremental path to Kotlin and Compose without a feature freeze. Knowing how to run both UI systems side by side and migrate screen by screen is a skill in itself, and one worth probing in interviews.

Senior signals: how to tell a strong Android hire from a weak one

Signals worth looking for, in interviews or in a portfolio:

• They talk about what happened after release. Crash-free rates, ANRs, vitals, staged rollout percentages, and a bug that only appeared on one manufacturer’s devices. Developers who have only built apps that never shipped cannot fake this.
• They explain state management under process death, not just “I use ViewModel.” Ask what survives process death and what does not; the answer sorts candidates quickly.
• They reason about threading in terms of structured concurrency: coroutine scopes, cancellation, and what happens to in-flight work when the user leaves the screen.
• They have opinions about module boundaries and build times, because they have lived in a codebase big enough for both to hurt.
• They read Play policy changes the way backend engineers read changelogs, because a missed target SDK deadline or a rejected data safety form is a business outage.

Weak signals: a portfolio of tutorial-shaped apps, UI screenshots with no discussion of architecture, and any claim that testing on the emulator is enough.

Native Android or cross-platform: the honest tradeoff

We place React Native and Flutter developers too, so we have no stake in steering you either way.

Choose native Android (Kotlin) when Android is your primary or revenue platform, when the app leans on platform depth (background processing, Bluetooth and other hardware, camera and media pipelines, widgets, Wear OS), or when performance on the low-end devices that dominate many markets decides whether users stay. Native also ages better: you are never waiting for a framework to wrap a new platform API.

Choose cross-platform when you need iOS and Android from one small team, the app is mostly screens over an API, and time to both stores matters more than squeezing the platform. Flutter and React Native are genuinely good at this class of app.

The mixed answer is common. Plenty of teams run a cross-platform app with native Kotlin modules for the hard parts, or start cross-platform and go native once one platform clearly carries the business. If you are weighing this, put it on the request form and we will talk it through before matching anyone.

When to hire an Android developer

The common triggers: you are building a native Android app from scratch, your existing app has aged into Java and legacy views and needs a path to Kotlin and Compose, your web or iOS product needs an Android counterpart, or crash rates and one star reviews are climbing and nobody on the team owns the platform. If you want one codebase for both platforms instead of native depth, the React Native and Flutter hubs below are the better starting point.

How turnkey.dev vetting works

Every developer goes through a screen for fundamentals (Kotlin, the Android lifecycle, concurrency, and app architecture), a practical exercise built around a realistic feature with state, navigation, and error handling, and a review of apps they have shipped, including scale, crash history, and what they would do differently. Published apps are examined, not just talked about. We reject far more than we accept.

Seniority, and what each level is for

Most companies coming to us need one senior developer who can own the Android app outright, with a lead brought in briefly for big decisions like a Compose migration or a rewrite versus refactor call.

Engagement models

• Full time. One developer, your team, your standups. The default for a new build, a major rewrite, or any app that ships weekly. Expect this for at least the first few months of a greenfield project.
• Part time retainer. A fixed weekly block, often 10 to 20 hours, for a stable app that needs OS updates, target SDK bumps, dependency upgrades, and a steady release cadence. This is the most cost-effective way to keep a finished app healthy, and it is where many full time engagements settle once the heavy build is done.
• Project based. A scoped piece of work with a clear end: a Compose migration, a Play Billing integration, a performance pass on startup and jank, or getting a stalled app through Play review. Works best when the deliverable can be written down in a paragraph.

You can move between models as the app’s life changes; most clients do.

What it costs and how fast

Vetted Android developers typically bill in the $70 to $130 per hour range. Treat that as a market band, not a menu price: where a developer lands moves with seniority, region, and scope. Leads who own architecture and releases sit at the top; mid-level developers working under review sit near the bottom; the same skill set prices differently in different timezones. Even at the top of the band, the total usually comes in well below the loaded cost of a full time hire once you count recruiting time, benefits, and equipment. You will see each developer’s rate before committing, and requesting a shortlist is free. Expect a shortlist in 2 to 5 days.

Start with a request, not a contract

Tell us what you are building, the state of the current codebase if there is one, and your timeline. We come back with a short list of vetted developers who fit, including rate and availability. You interview, run a paid trial if you want, and only then decide. If the fit is wrong in the first two weeks, we re-match at no cost.