Kotlin in the New Era
From Android Apps to MVPs, AI Features, and Scalable Backend Systems — 3 Days
Kotlin has grown far beyond its early reputation as a cleaner way to write Android code. Today, Kotlin developers are expected to understand how mobile apps connect with APIs, cloud services, security layers, data streams, AI features, and product goals. A modern app is rarely just an app; it is usually one part of a wider digital product.
This course is designed to help Kotlin and Android developers move from feature-level development to product-aware engineering. Participants will learn how to build stronger Kotlin applications, structure code more clearly, apply MVVM correctly, improve performance, secure applications, integrate AI, and understand how mobile systems connect with backend and cloud services.
A key part of the course is the MVP, or Minimum Viable Product, mindset. Participants will learn how to identify the smallest useful version of a product, build it properly, validate it early, and improve it based on real needs rather than assumptions.
The course will be led by an instructor with over 30 years of industry experience, using real industry-demanded content rather than overly academic material. The latest Kotlin ecosystem continues to support mobile, server-side, desktop, web, and multiplatform development, while recent Android 16 changes place stronger emphasis on security, privacy, behavior changes, and app compatibility.
Learning Outcomes
By the end of this course, participants will be able to:
- Understand the role of Kotlin in modern Android and backend development
- Design cleaner and more maintainable Kotlin applications
- Apply MVVM and ViewModel best practices in real-world applications
- Plan and structure an MVP for a Kotlin-based product
- Identify core features, supporting features, and future enhancements
- Improve application security using authentication, authorization, and secure coding practices
- Optimize app performance, memory usage, threading, and application size
- Prepare Android applications for platform changes from Android 12 to Android 16
- Integrate AI features using on-device and API-based approaches
- Understand how Kotlin applications connect with backend services and microservices
- Understand the basics of event-driven systems and real-time data flow
- Build applications with better scalability, maintainability, and industry relevance
Prerequisites
- Basic knowledge of Kotlin programming
- Basic familiarity with Android application development
- Understanding of object-oriented programming concepts
- Basic knowledge of REST APIs and networking
- Familiarity with Git or version control
- Optional but helpful: basic Java knowledge
- Optional but helpful: exposure to backend development concepts
Training Outline
- Modern Kotlin Development Overview
- Kotlin’s role in modern software development
- Kotlin for Android applications
- Kotlin for backend and server-side systems
- Kotlin in multiplatform development
- How mobile applications fit into larger digital systems
- Moving from simple app development to product-focused engineering
- Industry expectations for modern Kotlin developers
- MVP Thinking for Kotlin Applications
- Meaning of Minimum Viable Product
- Difference between prototype, MVP, and full product
- Identifying the main business problem
- Defining the target user
- Selecting the core feature set
- Separating must-have features from nice-to-have features
- Designing the first usable version of an application
- Avoiding overengineering in early product stages
- Planning future improvements after MVP release
- MVP validation and user feedback
- Technical decisions that support MVP delivery
- Balancing speed, quality, security, and maintainability
- Kotlin Project Structure and Code Organization
- Standard Kotlin project structure
- Organizing packages and files clearly
- Feature-based code organization
- Layer-based code organization
- Separating UI, business logic, and data handling
- Managing shared utilities and common code
- Understanding Gradle project structure
- Introduction to modular application design
- Benefits of modularization in larger applications
- Keeping MVP code clean enough for future growth
- Application Architecture Fundamentals
- Why architecture matters in Kotlin applications
- Common architecture problems in growing apps
- Separation of concerns
- Clean architecture concepts
- Presentation layer
- Domain layer
- Data layer
- Repository pattern
- Use case pattern
- Dependency management
- Maintainable architecture for MVP and post-MVP products
- MVVM Pattern
- Purpose of MVVM
- Model, View, and ViewModel responsibilities
- Data flow in MVVM
- UI state management
- Business logic placement
- Repository integration with MVVM
- Handling loading, success, and error states
- Managing user actions
- Common MVVM mistakes
- MVVM for scalable Android applications
- MVVM in MVP-focused development
- ViewModel Best Practices
- Purpose of ViewModel in Android
- Lifecycle-aware data handling
- Surviving configuration changes
- Avoiding memory leaks
- Using SavedStateHandle
- Managing coroutine scopes in ViewModels
- Handling errors and retries
- Sharing data between screens
- Testing ViewModels
- Structuring ViewModels for simple and complex screens
- Reactive and Asynchronous Programming
- Need for asynchronous programming in modern apps
- Kotlin coroutines overview
- Suspend functions
- Coroutine scopes
- Dispatchers
- Structured concurrency
- Flow basics
- StateFlow basics
- LiveData compared with Flow and StateFlow
- Handling background tasks safely
- Avoiding UI thread blocking
- Asynchronous patterns for MVP applications
- Security Fundamentals for Kotlin Applications
- Basic principles of application security
- Secure coding practices
- Common mobile security risks
- Authentication concepts
- Token-based authentication
- OAuth overview
- Authorization concepts
- Role-based access control
- Secure data storage
- Encryption basics
- Key management basics
- Network security
- HTTPS enforcement
- Certificate pinning overview
- Code shrinking and obfuscation
- Security considerations for MVP release
- Performance Tuning and Optimization
- Importance of performance in user experience
- Memory management basics
- Garbage collection overview
- Detecting memory leaks
- CPU performance concerns
- Network performance concerns
- Reducing application size
- Resource shrinking
- Code minification
- Startup time improvement
- Smooth UI rendering
- Profiling tools
- Production performance monitoring
- Performance trade-offs during MVP development
- Android 12 to Android 16 Migration Awareness
- Overview of Android platform evolution
- Target SDK considerations
- Privacy and permission changes
- Background execution changes
- Security-related platform changes
- Behavior changes affecting existing applications
- Large-screen and resizability changes
- Compatibility testing
- Backward compatibility planning
- Refactoring older Android code
- Testing across multiple Android versions
- Release readiness for modern Android devices
- AI Integration in Kotlin and Android Applications
- Role of AI in modern applications
- AI as a product feature
- Choosing AI features for an MVP
- On-device AI concepts
- Cloud-based AI concepts
- API-based AI integration
- Handling AI request and response flows
- Latency and reliability concerns
- Data privacy considerations
- User consent and responsible AI usage
- AI feature testing
- AI feature limitations
- Planning AI features for future product versions
- Backend Services for Kotlin Developers
- Why mobile developers need backend awareness
- Client-server application structure
- REST API concepts
- Request and response handling
- API error handling
- Authentication with backend services
- Database integration overview
- Logging and monitoring basics
- Backend validation
- Backend responsibilities in an MVP
- Kotlin for backend development
- Java interoperability
- Common backend frameworks and ecosystem awareness
- Microservices and Distributed Systems Basics
- Meaning of monolithic architecture
- Meaning of microservices architecture
- When microservices are useful
- When microservices are unnecessary
- Service decomposition
- API gateway concepts
- Service-to-service communication
- REST communication
- gRPC overview
- Fault tolerance basics
- Retry policies
- Circuit breaker concepts
- Scaling basics
- Cloud deployment overview
- MVP-first thinking before moving to complex architecture
- Event Streaming and Real-Time Systems
- Introduction to event-driven architecture
- Difference between request-response and event-driven communication
- Real-time data flow concepts
- Apache Kafka overview
- Topics and partitions
- Producers and consumers
- Event processing basics
- Data consistency considerations
- Ordering considerations
- Connecting mobile applications to real-time backends
- Real-time notifications and updates
- When event streaming is useful
- When event streaming is too complex for an MVP
- Connecting Mobile Apps with Cloud Systems
- Mobile applications as cloud-connected clients
- API consumption patterns
- Offline-first concepts
- Data synchronization basics
- Conflict handling overview
- Logging across mobile and backend systems
- Metrics and monitoring
- Tracing basics
- Crash reporting
- Release monitoring
- Product feedback loops
- Improving the product after MVP launch
- Product Readiness and Industry Delivery Practices
- Preparing an MVP for release
- Basic quality checks
- Functional testing
- Security checks
- Performance checks
- Compatibility checks
- User feedback collection
- Issue prioritization
- Technical debt awareness
- Planning post-MVP improvements
- Moving from MVP to scalable product
- Industry expectations for production-ready Kotlin applications
Special Note
Some topics, especially those related to AI services, backend services, cloud platforms, package repositories, and event streaming platforms, may require internet access and firewall bypass during training, depending on the training environment and tools selected by the instructor.
Disclaimer
This course outline is intended to serve as a general training guideline. The trainer reserves the right to amend, reorganize, expand, reduce, or substitute any topic, sub-topic, tool, sequence, or delivery approach as deemed appropriate, based on participant background, class progress, technical constraints, industry updates, or training objectives, without prior notice.
Practical, connected learning
My wider training approach brings hands-on implementation and systems thinking together, connecting technology with real operational needs.