Android development
We ask candidates to reason through lifecycle recreation, coroutines, state and memory behaviour, then explain how their architecture keeps platform concerns testable.
- Kotlin
- Android
- Mobile application architecture
UK, Europe, USA
Kotlin developer recruitment
Kotlin developers screened for Android platform depth, application quality and connected-product reliability.
Instruct us
Technical screening by developers and CTOs is included.
Kotlin recruitment for production Android work
We recruit Kotlin developers for Android applications, including roles involving Bluetooth and connected products. Technical screening examines platform fundamentals, application architecture, networking, testing, release quality and practical device integration.
When to hire Kotlin developers: A native Android application team. A connected-device mobile product. A team moving from cross-platform to deeper native capability.
Technologies, requirements and soft skills
We clarify the Android versions, architecture, device requirements, integrations and release ownership before evaluating candidates.
Connected products
We probe scanning, pairing, permissions, reconnect logic and protocol state by asking how the app behaves when devices disappear or send incomplete data.
- Bluetooth
- Bluetooth integrations
- IoT
- MQTT
Quality and integration
We ask candidates to divide coverage across unit, integration and device tests, then diagnose a production-only crash using logs, traces and reproducible state.
- RESTful APIs
- Unit tests
- Appium
- Sentry
Soft skills and working style
Mobile engineers need patience with device-specific failures, respect for release quality and the ability to explain platform constraints clearly to product, design and backend colleagues.
- Product empathy
- Patient debugging
- Release discipline
- Cross-platform thinking
- Calm communication
How we screen Kotlin developers
The interview focuses on Android behaviour and the operational realities of shipping to users and devices.
Android fundamentals
Lifecycle, concurrency, state, performance and platform conventions.
Application structure
Separation of concerns, networking, persistence and maintainable feature delivery.
Device reliability
Bluetooth or IoT integration, error recovery, testing and production diagnostics.
What every candidate needs to demonstrate
Tool names are not enough. Across every role, we look for technical depth, disciplined use of AI and an honest approach to solving unfamiliar problems.
Understands what happens behind the scenes
We keep asking why and how until we reach the underlying behaviour. Candidates should understand what their framework, runtime, database, browser, cloud service or design tool is doing for them, how they work behind the scenes (and why), and how they would investigate a failure without relying on copying fixes from ChatGPT.
Uses AI with engineering discipline
We expect candidates to use AI productively, but never as a substitute for judgement. They need to explain how they verify generated code, designs and tests, protect confidential data, catch unsafe assumptions and remain accountable for the result. We expect them to use MCPs, skills, and goals. So basically - we are looking for structured AI-assisted work, not vibe coding, vibe designing or vibe testing.
Combines initiative with honesty
Strong candidates have a can-do mindset and will investigate, experiment and learn when the answer is not obvious. At the same time, they are fair and transparent about what they know, what they have not done before and when they need support.
Looking to hire?
Give us a few details about the role and your hiring plans. We'll assess your needs and get back to you with a practical next step.
Frequently Asked Questions
Yes. We recruit Kotlin developers for native Android roles and assess the platform knowledge required by the application.
Yes. Our recruitment experience includes mobile roles involving Bluetooth and connected-product integrations.
The assessment can cover Android lifecycle, application architecture, networking, testing, performance and device integration.