Senior Android Developer

Who you are

• 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
• Strong knowledge of Kotlin (Java knowledge is a plus) and 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 our core stack: Reactive programming and async: RxJava, Kotlin Coroutines / Flow; dependency injection: Dagger 2, Hilt, or Koin; networking: Retrofit; navigation: Cicerone, Jetpack Navigation Component; modern UI: Jetpack Compose
• Practical experience with Firebase (FCM, Analytics, 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 — you understand the stakes
• Solid grasp of mobile security best practices (especially critical in our domain)
• Experience profiling and optimizing UI performance — reducing overdraw, improving recomposition efficiency in Jetpack Compose, and hitting smooth 60/120fps rendering
• Hands-on work with performance tooling: Android Profiler, Perfetto, Baseline Profiles, or similar
• Published apps on Google Play you're proud of
• An active GitHub profile with code you're happy to share
• Hands-on experience with AI agents and LLM tools (Claude, Cursor, Copilot, etc.) — setting up agent environments, writing prompts, skills, and behavioral rules
• Experience with AI-powered IDE tools (Cursor, Windsurf, GitHub Copilot, Claude Code, etc.) — including agent mode, rules files configuration, and integrating AI into the daily development workflow
• Understanding of model capabilities and limitations — knowing which model fits which task and how to manage the context window effectively
• Ability to evaluate and verify AI-generated output — using automated tests, linters, and critical review to catch hallucinations and errors
• Awareness of AI security risks — prompt injection, data leakage, and safe handling of untrusted inputs in agentic workflows

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, banking transactions and payments, physical and virtual card issuance, activation and control, and 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 — you'll be 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