Lead Android Developer

Paybis is a global fintech company in the crypto and payments space, founded in 2014. As of 2026: 6.9M+ users, 180+ countries, $5B+ in lifetime transaction volume, $2B in volume in 2025 alone (+266% YoY). Recognised as Best Crypto Payments Provider at AIBC Awards Dubai 2026. Self-funded, profitable.

Mobile is our primary growth channel. We are building a native iOS/Android app as the core user-facing product — and we are hiring a Lead Android Developer to own the Android platform.

This is not just a stronger Senior Android Engineer role. It is a different job.

You will own the Android technical roadmap, set engineering standards from scratch, make architectural decisions, actively mentor the Android team, and act as the Android voice in every cross-functional discussion — while writing Kotlin every single day. We are looking for someone who codes at a high level AND leads through expertise.

Android is strategically critical for Paybis: our user base is global, with strong concentration in Android-dominant markets across Eastern Europe and the emerging world. The Lead who builds the right Android foundation — architecture, security, CI/CD, Play Store pipeline — directly determines whether the Android product scales cleanly or becomes a maintenance liability.

The app processes real financial transactions for real users. Security, reliability, and code quality are non-negotiable — not aspirational.

• Own the Android technical roadmap and architecture — define how the app is built, not just what gets shipped
• Establish Android engineering standards: code review guidelines, architecture patterns, CI/CD processes, testing culture
• Make and defend architectural decisions — MVVM / Clean Architecture / MVI: know when to use what and why
• Build and maintain Android CI/CD pipelines: GitLab CI, Fastlane, or Bitrise
• Own the Google Play lifecycle end-to-end: app signing, keystore management, release tracks, Play Console, policy handling
• Write clean, performant, testable Kotlin code every day — Jetpack Compose and XML Views in production
• Implement mobile security requirements: Android Keystore, EncryptedSharedPreferences, biometric auth, root detection, SSL/certificate pinning
• Mentor Android developers — raise their output, not just review their code
• Create technical documentation for the Android codebase and architecture
• Participate in sprint planning, product design sessions, and roadmap discussions
• Collaborate with Backend, Product, Design, and QA — represent Android in every cross-team conversation
• Participate in hiring future Android engineers as the team scales

Must have:

• 6+ years of commercial Android development in Kotlin
• Proven track record of technical leadership — setting standards, driving architecture decisions, raising the engineering bar across a team
• Deep Kotlin mastery: coroutines, Flow, sealed classes, extension functions, DSLs — idiomatic Kotlin, not Java-in-Kotlin
• Jetpack Compose in production — real screens shipped to users, state management, theming, performance optimisation
• Strong XML/View system foundation (ConstraintLayout, RecyclerView, custom views) as complement to Compose expertise
• Architectural patterns at depth: MVVM + Clean Architecture minimum; can articulate trade-offs vs. MVI
• Jetpack suite ownership: ViewModel, StateFlow, Navigation, Room, WorkManager — configured and owned at scale
• Dependency injection: Hilt/Dagger — has set up the DI graph for a real multi-module project
• Networking: Retrofit + OkHttp, interceptors, token refresh, retry logic, robust error handling strategies
• Android security at depth: EncryptedSharedPreferences, Android Keystore, biometric auth, root detection, SSL/certificate pinning
• Android CI/CD: has built or significantly improved a pipeline (GitLab CI, Bitrise, Fastlane or equivalent)
• Google Play lifecycle ownership: app signing, keystore management, release tracks, policy handling — full end-to-end ownership
• Testing culture: JUnit, Mockk, Espresso or Compose testing — writes testable code and enforces it in code review
• Code review leadership — sets the PR quality bar, gives actionable feedback, establishes standards others follow
• Active mentorship with measurable outcomes — can describe developers whose output improved under their guidance
• Cross-functional communication: works effectively with Product, Design, Backend, QA
• English B2+ — PRs, architecture proposals, async communication all in English
• Ownership mindset — drives problems to resolution end-to-end without waiting to be managed

Nice to have:

• Experience in fintech, crypto, payments or banking Android apps
• KYC SDK integration (Sumsub, Onfido or similar) on Android in production
• Payment SDK integration at Android level (Checkout.com, Stripe or equivalent)
• Real-time data: WebSocket or SSE for live crypto prices, order status or market feeds
• Firebase suite: Analytics, Crashlytics, Remote Config, A/B testing — set up and owned team-wide
• Multi-module Android architecture — has designed or migrated a project to feature modules
• Kotlin Multiplatform Mobile (KMM) — exposure or hands-on experience
• Performance profiling with Android Studio Profiler — identified and fixed real production bottlenecks
• Detekt, SonarQube or other static analysis tooling — enforced across a codebase
• Experience participating in or leading Android technical hiring interviews
• Offline-first or sync-heavy architecture experience
• AI tools in daily development (GitHub Copilot, Cursor, etc.)

• Technical Leadership Without Authority — no formal direct reports; you earn influence through expertise, standards others want to follow, and feedback people learn from
• Ownership at Platform Level — you own the Android platform, not just your tasks; if architecture, CI/CD, or the Play Store pipeline slips, you feel it and act on it
• Engineering Craft + Business Judgement — you balance technical excellence with product delivery; a perfect architecture that ships 4 months late is a failure, and so is a fast ship with security gaps
• Mentorship as a Multiplier — your impact compounds through the team; raising the Android developer beside you from Good to Great creates more value than writing perfect code alone — mentorship is a core job output
• Pragmatic Decision-Making Under Uncertainty — MVP context means incomplete information and shifting priorities; you make good calls with limited data and are comfortable committing to a direction
• Cross-Functional Trust Builder — you represent Android in API contract negotiations with backend, feature scoping with product, QA strategy, and release planning; you build credibility across disciplines
• Security-First Mindset — PCI DSS Level 1, KYC/AML, real financial transactions at scale; the Android security bar for the entire codebase is yours to set and hold
• Emotional Maturity — you will face disagreements with product on scope, backend on API design, management on timelines; you navigate with directness and calm, not escalation

Kotlin · Jetpack Compose · Coroutines & Flow · MVI · MVVM + Clean Architecture · Hilt / Dagger · Retrofit + OkHttp · WorkManager · Android Keystore · EncryptedSharedPreferences · Root Detection · SSL Pinning · KYC SDK integration · REST · WebSocket · GitLab CI/CD

First 30 days — Get acquainted with the codebase, start contributing, establish the Android delivery pipeline. Understand team architecture, stack, and processes.



First 90 days — Propose an approach to documenting application architecture. Actively participate in technical discussions. Provide valuable, trusted input on application development decisions.

First 6 months — Demonstrate leadership: develop the engineers you work with, act as the Android voice in cross-functional discussions, own incidents and lead their resolution end-to-end.

1. HR screening
2. Technical interview
3. Final interview with Head of Engineering + Tech Lead

• Full Android platform ownership: architecture, CI/CD, Play Store pipeline, security standards — all yours to define
• Real product at global scale: 6.9M users, Android-dominant markets across Eastern Europe and the emerging world
• Product company, not an agency — you own what you build end to end and see the long-term consequences
• Modern, clean stack: Kotlin, Jetpack Compose, Coroutines, Flow — no Java legacy
• Fintech + crypto domain: technically demanding, security-critical, non-trivial UX challenges with real financial stakes
• Remote-first, high autonomy, minimal micromanagement
• Fast-growing company: 266% YoY growth in 2025, self-funded and profitable