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# Semi-Senior Android Developer

- **Company:** Bjak
- **Location:** Barcelona, Spain
- **Salary:** €24,000.0 - €54,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Android Software Development, User Authentication, Data Security, Software Debugging, Backend, Kotlin, Asynchronous Programming
- **Published:** July 16, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

+ Strong native Android experience using Kotlin.
 + Experience shipping Android apps used by real users.
 + Good understanding of Android architecture, Jetpack, Coroutines, Flow and modern Android development.
 + Strong product sense and care for UX, not just screens and tickets.
 + Able to debug production issues and improve performance, reliability and app quality.
 + Comfortable working with ambiguity and moving fast without lowering the bar., English is our main working language across global teams. Strong English communication is required.

## Description

We are looking for Android engineers to build the native Android experience for BJAK's AI Neobank App.
This role is for someone who cares about clean user flows, fast performance, product quality and shipping reliable mobile features used by real customers.

What Will You Build

 + Build and ship native Android features for onboarding, accounts, cards, payments, transfers, rewards and AI-assisted user journeys.
 + Turn complex financial flows into simple, fast and reliable mobile experiences.
 + Work closely with product, design, backend and AI engineers to take features from idea to production.
 + Own app quality across performance, crash rate, loading states, edge cases and release stability.
 + Use production feedback, analytics and customer behaviour to improve what you build after launch.
 + Integrate APIs, authentication, secure data handling and financial workflows with strong attention to reliability., We are looking for engineers with real technology career highlights. A strong highlight is not just working at a famous company. A strong highlight means you personally helped build, ship or scale a serious product, platform or system.

This Role Is Not For

 + Engineers who only want fully defined tickets.
 + Developers who build screens without caring about user experience.
 + People who ignore crashes, edge cases, loading states or performance.
 + Engineers who move slowly in a startup environment.
 + People who exaggerate impact without explaining their actual contribution.


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