Android Developer is a role in the Mobile Development family. It has 53 skills across 5 levels (from Junior to Principal). 108 skills are mandatory. Key domains: Programming Fundamentals, Backend Development, Frontend Development.
Technology Stack
Focus by Level
Building UI screens with Jetpack Compose/XML. Working with Retrofit. Adaptive layout design. Writing unit tests. Fixing bugs.
Designing architecture (MVVM/MVI). Working with Room, Hilt (DI). Navigation Component. Background processing (WorkManager). Code review.
Application architecture. Performance optimization (Android Profiler). Modularization. Custom Views. Offline-first design.
Android platform: CI/CD, modularization, design system. Compose migration. Coordination. Release management. Standards.
Mobile strategy. KMP (Kotlin Multiplatform). Architecture for scale. Google I/O insights.
Skill Matrix
53 skills × 5 levels. Click on a cell for details.
AI-Assisted Development
4 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| GitHub Copilot | A | W | A | E | E |
| Cursor IDE | A | W | A | A | — |
| ChatGPT / Claude | A | W | A | E | E |
| Prompt Engineering for Code | A | W | A | E | — |
API & Integration
4 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| REST API Design | A | W | A | E | E |
| GraphQL Design | A | W | A | E | E |
| WebSocket API Design | A | W | A | E | E |
| API Documentation | A | W | A | E | E |
Architecture & System Design
2 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| System Design Fundamentals | A | W | A | E | E |
| Clean Architecture | A | W | A | E | E |
Backend Development
2 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Apache Kafka | A | W | A | E | E |
| Redis | A | W | A | E | E |
Cloud & Infrastructure
5 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Docker | A | W | A | E | E |
| Kubernetes Core | A | W | A | E | E |
| Terraform | A | W | A | E | E |
| AWS | A | W | A | E | E |
| Network Fundamentals | A | W | A | E | E |
Database Management
3 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| PostgreSQL | A | W | A | E | E |
| Database Indexing | A | W | A | E | E |
| Query Optimization | A | W | A | E | E |
DevOps & CI/CD
1 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| GitHub Actions / GitLab CI | A | W | A | E | E |
Frontend Development
1 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Data Fetching | A | W | A | E | E |
Mobile Development
8 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Kotlin & Jetpack Compose | A | W | A | E | E |
| Android Architecture Components | A | W | A | E | E |
| Navigation & Deep Links | A | W | A | E | E |
| Kotlin Coroutines & Flow | A | W | A | E | E |
| Mobile CI/CD | A | W | A | E | E |
| Mobile Security | A | W | A | E | E |
| Mobile Performance | A | W | A | E | E |
| App Store Optimization (ASO) | A | W | A | E | E |
Observability & Monitoring
4 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Structured Logging | A | W | A | E | E |
| Prometheus & Grafana | A | W | A | E | E |
| OpenTelemetry | A | W | A | E | E |
| SLI / SLO / SLA | A | W | A | E | E |
Performance Engineering
1 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Performance Budgets | A | W | A | E | E |
Programming Fundamentals
9 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Algorithms & Complexity | A | W | A | E | E |
| Data Structures | A | W | A | E | E |
| OOP & SOLID Principles | A | W | A | E | E |
| Design Patterns | A | W | A | E | E |
| Multithreading | A | W | A | E | E |
| Async Programming | A | W | A | E | E |
| Code Quality & Refactoring | A | W | A | E | E |
| Type Safety & Type Systems | A | W | A | E | E |
| Memory Management | A | W | A | E | E |
Security
3 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| OWASP & Application Security | A | W | A | — | — |
| Secure Coding Practices | A | W | A | E | E |
| JWT / OAuth2 / OIDC | A | W | A | E | E |
Testing & QA
4 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Unit Testing | A | W | A | E | E |
| Integration Testing | A | W | A | E | E |
| E2E Testing | A | W | A | E | E |
| Mobile Testing | A | W | A | E | E |
Version Control & Collaboration
2 skills| Skills | Jun | Mid | Sen | Lead | Princ |
|---|---|---|---|---|---|
| Git Advanced | A | W | A | E | E |
| Code Review | A | W | A | E | E |
FAQ
What skills are needed for the Android Developer role?
The Android Developer role requires 53 skills, of which 108 are mandatory. Skills are distributed across 5 levels: from Junior to Principal. See full matrix.
How to advance to the next level in the Android Developer role?
Use the Grade Calculator to assess your current level and get personalized recommendations. The system will show which skills need to be developed for the next level.
What tech stack is used in the Android Developer role?
The stack includes 5 technologies at different levels. Kotlin 1.9+, Jetpack Compose, Retrofit, Room basics, Hilt basics, Android Studio, JUnit, Kotlin 1.9+, Jetpack Compose, Retrofit + OkHttp, Room, Hilt, Navigation, Coroutines/Flow, Espresso, Gradle, Kotlin 1.9+, Compose advanced, Kotlin Coroutines/Flow deep, Modular architecture, Custom Gradle plugins, Benchmark, LeakCanary...
How does the community define requirements for the Android Developer role?
Role requirements are shaped by the community through a proposal system. Any member can suggest changes that go through voting and expert review.