Senior Android Developer

Who you are

• Strong knowledge of Kotlin; Java knowledge is a plus
• 5+ years of commercial Android development
• Deep understanding of OOP, SOLID, and Clean Architecture
• Solid experience with presentation layer patterns — MVI, MVVM, and MVP — and the ability to choose the right one for the context
• Hands-on experience with reactive programming and async using RxJava and Kotlin Coroutines / Flow
• Experience with dependency injection using Dagger 2, Hilt, or Koin
• Experience with Retrofit for networking
• Experience with Cicerone or Jetpack Navigation Component
• Experience with Jetpack Compose
• Practical experience with Firebase, including FCM, Analytics, and Crashlytics
• Experience with feature-module architecture in production
• Confidence with Git / GitLab, including setting up and maintaining GitLab CI/CD
• A builder's mentality — you care about the product, the users, and the outcomes, not just the code
• Clear, concise communication in English across technical and non-technical audiences
• Background in fintech or experience with financial products
• A solid grasp of mobile security best practices
• Experience profiling and optimizing UI performance, including reducing overdraw, improving recomposition efficiency in Jetpack Compose, and achieving smooth 60/120fps rendering
• Hands-on experience with performance tooling such as Android Profiler, Perfetto, or Baseline Profiles
• Published apps on Google Play that you're proud of
• An active GitHub profile with code you're happy to share
• Hands-on experience with AI agents and LLM tools, including setting up agent environments and writing prompts, skills, and behavioral rules
• Experience with AI-powered IDE tools, including agent mode, rules-file configuration, and integrating AI into the daily development workflow
• Understanding of model capabilities and limitations, including choosing models for tasks and managing context windows
• Ability to evaluate and verify AI-generated output using automated tests, linters, and critical review
• Awareness of AI security risks, including prompt injection, data leakage, and safe handling of untrusted inputs in agentic workflows
• You're pragmatic and have a proven track record of shipping products that matter
• You communicate clearly across disciplines and thrive in a cross-functional environment where everyone is solving the same customer problem together

What the job involves

• We're looking for a Senior Android Engineer or Tech Lead who thinks like a product builder — someone who cares deeply about the "why" behind what they're building, not just the tickets in the backlog
• You'll be embedded in a cross-functional domain team (Backend, Mobile, ML/AI, QA, Design, and Product) and own the end-to-end development of features that genuinely matter: company accounts and cash flows, banking transactions, card issuance and management, and AI-enabled accounting
• You'll help shape architecture decisions, raise the bar on engineering quality, and mentor the engineers around you
• If you're energized by working at the intersection of great mobile engineering and real product impact — this is the role
• Design and build new features for our Android application, used daily by business owners across Europe
• Architect and implement reliable, intuitive solutions for multi-account cash flow management
• Architect and implement reliable, intuitive solutions for banking transactions and payments
• Architect and implement reliable, intuitive solutions for physical and virtual card issuance, activation, and control
• Architect and implement reliable, intuitive solutions for AI-powered accounting automation
• Build polished, responsive UIs using Jetpack Compose
• Take ownership of code quality, performance, and stability; automated testing and thorough code reviews are non-negotiable
• Collaborate closely with Backend, QA, Design, and Product — shaping solutions end-to-end, not just implementing specs
• Drive technical decisions within your domain, challenge assumptions when needed, and proactively identify opportunities to build better
• Contribute to CI/CD pipelines, tooling, and mobile best practices across the team

The application process

• Talent Partner Interview
• First Technical Interview
• Mobile System Design Interview
• Team Fit Interview (peer interview)
• Offer