Interviews/Mobile & Games/React Native Developer

Hire React Native Developers
who actually ship React Native that does not bridge-storm

With EasyEnv we build a fit test for the role. Use it to cut the noise at the top of the funnel, or to go deep on the candidates who matter.

You can even evaluate how this person works with AI. So you hire the engineer who can ship, not the one who looks good in a slide.

React NativeNew ArchitectureExpo · EASReanimated · SkiaLive or take-home

Request a Demo Create a Free Account

Real Linux VM

Not a sandbox

systemd, kernel, full toolchain

Browser-based

Zero install for candidates

One link and they are in

Auto-graded

Pass / fail checks per challenge

Plus the full session replay

A great React Native developer knows when JS holds the team back and when the native side is overkill. The good ones reach for Reanimated worklets, profile lists with Flipper, and ship Expo apps that ship to the store on the same day. EasyEnv hands the candidate a real RN app with a janky list and a bridge storm.

Inside a live interview

What you see when they work.

Real React Native app, real device profile, every keystroke recorded.

billing-api

AMS

Billing-api

src

billing.py

auth.py

models.py

tests

test_billing.pyM

test_auth.py

pyproject.toml

README.md

Pybilling.py

from decimal import Decimal

def calculate_total(items: list[dict]) -> Decimal:

# Sum line totals using Decimal for currency precision

total = Decimal("0")

for item in items:

total += Decimal(str(item["price"])) * item["qty"]

return total

candidate@rn-workspace:~

alice@dev:~/billing-api$

● mainPython 3.12

Claude · ready

Claude

You

Refactor calculate_total to use Decimal for currency math, and add a test.

Claude

Ask Claude...

Mike

Sam

How it works

Three steps. Zero infra to maintain.

Pick the fit test

Use a ready-made challenge or ask us to build one for your stack. Live, take-home, or both.

Send one link

The candidate clicks. A full Linux workspace boots in their browser. No installs, no VPN, no zoom-share.

Review at 2x

Replay the session, read the auto-graded checks, and decide. Most reviews take under five minutes.

The problem

Why hiring a React Native Developer is hard.

RN depth varies from "Expo app" to "wrote a TurboModule".

Old versus New Architecture fluency is uneven.

Lists are where perf is won or lost.

Native modules are where careers diverge.

The fit test

What we measure for a React Native Developer.

Every area runs inside a real production-like workspace. The candidate works in a browser, the session records itself.

Lists and virtualization

A FlatList dropping frames. They use getItemLayout, recycle, or FlashList.

Reanimated / worklets

An animation running on JS thread. They move it to the UI thread.

Native modules

A bridge call hot in profile. They batch or move native.

Build and EAS

A broken Expo build. They read EAS logs without flailing.

Cross-platform parity

A bug that exists only on Android. They reach for the platform-specific.

AI collaboration

Allow AI for refactors and grade whether they re-ran the device profile after.

The stack we put in front of them.

Real tools, pre-installed, accessible from the workspace terminal.

React Native 0.76+ExpoEASReanimated 3React Native SkiaFlashListHermesNew ArchitectureTurboModulesFabricreact-native-mmkvTanStack QueryTypeScriptDetoxJestSentry

Sample challenges

What a React Native Developer interview looks like.

Pick from our library or ask us to build a challenge for your stack. Each one is a real workspace, not a snippet.

Challenge 01

The chat that drops frames

Scenario

A FlatList of 5k messages that drops frames on scroll. The device shows 32fps.

What you learn

Whether they reach for FlashList or fix the renderItem allocations.

In the workspace

$ ls challenges/

workspace, runbook.md, README.md

candidate has:

· a real Linux box in the browser
· kubectl, docker, terraform, jq, yq
· cluster, repo and cloud creds pre-wired
· auto-checks running in the background

interviewer sees:

· every keystroke + every command
· terminal + screen recording
· auto-graded pass/fail per check

AI in the loop

Score the engineer, and how they work with AI.

AI writes inline renderItem with fresh styles every frame. EasyEnv records prompts so you see whether the candidate re-measured device perf after the LLM-suggested change.

Allow or block AI per question, not per interview

Full prompt and response history replayed in the review

Score "verifies AI output" as a separate signal

Ready to hire a React Native Developer who ships?

Set up your first interview in under an hour. We will help you build a fit test for this role on your stack.

Request a Demo Create a Free Account

Role FAQ

Hiring a React Native Developer, answered.

Live workspaces use an Android emulator. Enterprise plans support physical devices over a remote farm.

Yes. Fabric and TurboModules can be enabled in the workspace.

No. The workspace runs in their browser. Terminal, editor, ports and dashboards are all served from the EasyEnv workspace, so candidate setup is zero.

Each challenge has automated checks (did the service come back, did the test pass, did the right log message appear) plus a recording your team can replay. Most reviews take under five minutes.

Yes. AI access is a per-interview setting. Block it for fundamentals, then allow it later in the loop to assess AI collaboration separately.

Interviews/Mobile & Games/React Native Developer

Hire React Native Developers
who actually ship React Native that does not bridge-storm

With EasyEnv we build a fit test for the role. Use it to cut the noise at the top of the funnel, or to go deep on the candidates who matter.

You can even evaluate how this person works with AI. So you hire the engineer who can ship, not the one who looks good in a slide.

React NativeNew ArchitectureExpo · EASReanimated · SkiaLive or take-home

Request a Demo Create a Free Account

Real Linux VM

Not a sandbox

systemd, kernel, full toolchain

Browser-based

Zero install for candidates

One link and they are in

Auto-graded

Pass / fail checks per challenge

Plus the full session replay

Inside a live interview

What you see when they work.

Real React Native app, real device profile, every keystroke recorded.

billing-api

AMS

Billing-api

src

billing.py

auth.py

models.py

tests

test_billing.pyM

test_auth.py

pyproject.toml

README.md

Pybilling.py

from decimal import Decimal

def calculate_total(items: list[dict]) -> Decimal:

# Sum line totals using Decimal for currency precision

total = Decimal("0")

for item in items:

total += Decimal(str(item["price"])) * item["qty"]

return total

candidate@rn-workspace:~

alice@dev:~/billing-api$

● mainPython 3.12

Claude · ready

Claude

You

Refactor calculate_total to use Decimal for currency math, and add a test.

Claude

Ask Claude...

Mike

Sam

How it works

Three steps. Zero infra to maintain.

Pick the fit test

Use a ready-made challenge or ask us to build one for your stack. Live, take-home, or both.

Send one link

The candidate clicks. A full Linux workspace boots in their browser. No installs, no VPN, no zoom-share.

Review at 2x

Replay the session, read the auto-graded checks, and decide. Most reviews take under five minutes.

The problem

Why hiring a React Native Developer is hard.

RN depth varies from "Expo app" to "wrote a TurboModule".

Old versus New Architecture fluency is uneven.

Lists are where perf is won or lost.

Native modules are where careers diverge.

The fit test

What we measure for a React Native Developer.

Every area runs inside a real production-like workspace. The candidate works in a browser, the session records itself.

Lists and virtualization

A FlatList dropping frames. They use getItemLayout, recycle, or FlashList.

Reanimated / worklets

An animation running on JS thread. They move it to the UI thread.

Native modules

A bridge call hot in profile. They batch or move native.

Build and EAS

A broken Expo build. They read EAS logs without flailing.

Cross-platform parity

A bug that exists only on Android. They reach for the platform-specific.

AI collaboration

Allow AI for refactors and grade whether they re-ran the device profile after.

The stack we put in front of them.

Real tools, pre-installed, accessible from the workspace terminal.

React Native 0.76+ExpoEASReanimated 3React Native SkiaFlashListHermesNew ArchitectureTurboModulesFabricreact-native-mmkvTanStack QueryTypeScriptDetoxJestSentry

Sample challenges

What a React Native Developer interview looks like.

Pick from our library or ask us to build a challenge for your stack. Each one is a real workspace, not a snippet.

Challenge 01

The chat that drops frames

Scenario

A FlatList of 5k messages that drops frames on scroll. The device shows 32fps.

What you learn

Whether they reach for FlashList or fix the renderItem allocations.

In the workspace

$ ls challenges/

workspace, runbook.md, README.md

candidate has:

· a real Linux box in the browser
· kubectl, docker, terraform, jq, yq
· cluster, repo and cloud creds pre-wired
· auto-checks running in the background

interviewer sees:

· every keystroke + every command
· terminal + screen recording
· auto-graded pass/fail per check

AI in the loop

Score the engineer, and how they work with AI.

AI writes inline renderItem with fresh styles every frame. EasyEnv records prompts so you see whether the candidate re-measured device perf after the LLM-suggested change.

Allow or block AI per question, not per interview

Full prompt and response history replayed in the review

Score "verifies AI output" as a separate signal

Ready to hire a React Native Developer who ships?

Set up your first interview in under an hour. We will help you build a fit test for this role on your stack.

Request a Demo Create a Free Account

Role FAQ

Hiring a React Native Developer, answered.

Live workspaces use an Android emulator. Enterprise plans support physical devices over a remote farm.

Yes. Fabric and TurboModules can be enabled in the workspace.

No. The workspace runs in their browser. Terminal, editor, ports and dashboards are all served from the EasyEnv workspace, so candidate setup is zero.

Each challenge has automated checks (did the service come back, did the test pass, did the right log message appear) plus a recording your team can replay. Most reviews take under five minutes.

Yes. AI access is a per-interview setting. Block it for fundamentals, then allow it later in the loop to assess AI collaboration separately.

How to Hire a React Native Developer | Expo · New Architecture | EasyEnv | EasyEnv

Hire React Native Developerswho actually ship React Native that does not bridge-storm

What you see when they work.

Three steps. Zero infra to maintain.

Pick the fit test

Send one link

Review at 2x

Why hiring a React Native Developer is hard.

What we measure for a React Native Developer.

Lists and virtualization

Reanimated / worklets

Native modules

Build and EAS

Cross-platform parity

AI collaboration

The stack we put in front of them.

What a React Native Developer interview looks like.

The chat that drops frames

Score the engineer, and how they work with AI.

Ready to hire a React Native Developer who ships?

Hiring a React Native Developer, answered.

Hire React Native Developerswho actually ship React Native that does not bridge-storm

What you see when they work.

Three steps. Zero infra to maintain.

Pick the fit test

Send one link

Review at 2x

Why hiring a React Native Developer is hard.

What we measure for a React Native Developer.

Lists and virtualization

Reanimated / worklets

Native modules

Build and EAS

Cross-platform parity

AI collaboration

The stack we put in front of them.

What a React Native Developer interview looks like.

The chat that drops frames

Score the engineer, and how they work with AI.

Ready to hire a React Native Developer who ships?

Hiring a React Native Developer, answered.

Hire React Native Developers
who actually ship React Native that does not bridge-storm

Hire React Native Developers
who actually ship React Native that does not bridge-storm