Android Development:

• Extensive experience building and maintaining production Android applications across on-demand delivery, fintech, AI-driven consumer applications, and IoT platforms.

• Strong practical experience with architectural patterns including MVVM, MVI, Clean Architecture, repository/use-case patterns, and multi-module application design for scalable and maintainable codebases.

• Expertise in Android Jetpack and Architecture Components including ViewModel, Navigation Component, Room, DataStore, WorkManager, Lifecycle, and modern background execution patterns.

• Hands-on experience with Jetpack Compose and Compose Multiplatform (CMP), including hybrid architectures where XML/Fragment and Compose Multiplatform screens coexist behind shared navigation, dependency injection, and data layers.

• Led the migration of a mission-critical courier application from legacy XML architecture to Kotlin Multiplatform and Compose Multiplatform while keeping production releases uninterrupted.

• Deep experience with Android background execution including Foreground Services, location tracking, geofencing, activity recognition, lifecycle handling, Android 13+ FGS requirements, and background reliability.

• Drove application stability improvements that increased crash-free rate from ~97% to 99.95% and reduced ANRs from ~0.53% to ~0.10% through memory leak fixes, coroutine race-condition elimination, lifecycle improvements, foreground-service hardening, and main-thread optimization.

• Proficiency integrating third-party services and APIs including Firebase, Google Maps, Socket.IO, Apollo GraphQL, Billing Client, Masterpass, AWS IoT Core, LiveKit, WebRTC, and analytics platforms.

​​

​Kotlin Multiplatform / Cross-Platform:

• Led the end-to-end Kotlin Multiplatform migration of a production courier application, sharing business logic, networking, persistence, and platform-independent domain logic across Android and iOS.

• Acted as technical owner of the KMP migration initiative, driving architecture decisions and coordinating Android and iOS platform teams.

• Built hybrid architectures where native XML/Fragment screens and Compose Multiplatform UI coexist behind shared navigation, DI, domain, and data layers.

• Migrated networking and persistence stacks to multiplatform-ready technologies including Retrofit → Ktor, Room Multiplatform, and DataStore.

• Designed a Hilt → Koin migration strategy that allowed both dependency-injection frameworks to coexist through modular bridges and adapters, enabling feature-by-feature migration without blocking releases.

• Worked with Android and iOS platform APIs including CocoaPods integration, Swift interoperability, CLLocationManager, AVAudioSession, and platform-specific background execution.

• Built cross-platform real-time voice experiences using Compose Multiplatform, LiveKit WebRTC, microphone handling, iOS AVAudioSession routing, noise-suppressed capture, and live STT transcript streaming.

​​

AI / Real-Time Applications:

• Built a cross-platform voice shopping client using Compose Multiplatform and LiveKit WebRTC with real-time speech and agent interaction.

• Implemented real-time agent-to-UI synchronization using AG-UI events over LiveKit data packets, including chunk reassembly and snapshot RPC on reconnect.

• Integrated MCP App shopping interfaces including search, cart, and checkout flows into mobile applications through HTTP-rendered HTML and WebView.

• Contributed to LiveKit Agents-based voice pipelines covering STT → LLM → TTS / realtime interactions, tool-driven workflows, barge-in handling, and session lifecycle management.

• Experience integrating AI-driven image generation, video generation, photo editing, and voice-driven user experiences in large-scale consumer applications.

​​

Programming Languages:

• Advanced proficiency in Kotlin and Java with deep understanding of language features, idiomatic usage, generics, concurrency, functional programming concepts, and modern Android development practices.

• Strong experience with Kotlin Coroutines and Flow for asynchronous programming, reactive streams, structured concurrency, synchronization, cancellation, and concurrency-safe application architecture.

• Experience with Swift through Kotlin Multiplatform and iOS interoperability work.

• Experience with C/C++ for performance-sensitive and lower-level application components.

• Experience with Python for scripting, automation, backend tooling, SCADA systems, and data-processing workflows.

• Working experience with Dart, TypeScript, JavaScript, and Node.js across Flutter, React Native, and backend-adjacent projects.

• Object-Oriented Programming (OOP) Concepts:

• Strong understanding of encapsulation, abstraction, inheritance, polymorphism, composition, and interface-driven design.

• Proficiency applying SOLID principles and common design patterns including Factory, Observer, Adapter, Repository, Strategy, Builder, and dependency-injection patterns.

• Practical experience designing modular boundaries and abstraction layers for large-scale migrations such as Hilt → Koin, Retrofit → Ktor, and legacy Android → KMP/CMP.

​​

Data Structures and Algorithms:

• Solid understanding of arrays, linked lists, stacks, queues, trees, graphs, hash tables, heaps, and common algorithmic techniques.

• Proficiency in algorithm design and complexity analysis for searching, sorting, batching, caching, synchronization, and performance-sensitive mobile workloads.

• Applied data-processing techniques to real-world systems including GPS batching, sensor throttling, offline backfill, chunked uploads, event buffering, and real-time synchronization.

• Database Systems:

• Strong experience with Room, Room Multiplatform, SQLite, and DataStore for production Android and Kotlin Multiplatform applications.

• Experience designing schemas, migrations, repositories, CRUD operations, caching layers, and offline-first synchronization mechanisms.

• Implemented persistent GPS backfill and retry pipelines designed to preserve data during network interruptions.

• Familiarity with PostgreSQL, MySQL, and Redis from backend and full-stack development workflows.

• Understanding of transactions, indexing, optimistic/pessimistic concurrency, and database consistency concepts.

​​

Networking and Protocols:

• In-depth understanding of TCP/IP, HTTP/HTTPS, REST, WebSockets, Socket.IO, MQTT, GraphQL, and real-time communication patterns.

• Designed production Socket.IO pipelines with watchdogs, reconnection strategies, race-free connection management, chunk-based batching, and foreground-service integration.

• Integrated AWS IoT Core using MQTT over TLS with X.509 certificate-based authentication for secure real-time courier-device communication.

• Experience with REST and GraphQL clients including Retrofit, Ktor, and Apollo GraphQL.

• Experience with WebRTC and LiveKit for low-latency real-time voice and data communication.

• Background in industrial communication protocols including Modbus RTU and Modbus TCP/IP through IoT and SCADA projects.

Location, Sensors & Background Processing:

• Designed production location-tracking systems using fused location providers, activity recognition, foreground services, and background execution.

• Built a Location + Sensor ingestion engine with batching, throttling, adaptive collection intervals, and network-efficient processing.

• Designed and implemented a Geofence Engine combining native platform triggers with custom location validation for reliable entry/exit detection.

• Implemented offline-resilient GPS backfill with persistent storage, chunked uploads, retries, and activity recognition to prevent location-data loss.

• Strong understanding of battery optimization, background limitations, lifecycle constraints, and platform-specific location behavior on Android and iOS.

• Cloud, IoT & Embedded Systems:

• Experience integrating mobile applications with IoT devices, smart appliances, sensors, and cloud-connected systems.

• Integrated AWS IoT Core using MQTT, TLS, and X.509 device certificates.

• Experience with device connectivity through Wi-Fi, Bluetooth, MQTT, geofencing, and real-time telemetry.

• Worked on smart-home platforms connecting mobile applications with refrigerators, washing machines, dishwashers, hobs, hoods, and other connected appliances.

• Experience with Raspberry Pi, Modbus RTU, Modbus TCP/IP, SCADA systems, and industrial monitoring applications.

Payments & Commerce:

• Implemented end-to-end in-app payment flows including Masterpass, 3D Secure authentication, card linking, and secure tokenization.

• Built reusable Google Play Billing libraries supporting consumable, non-consumable, and subscription-based purchases.

• Experience building dynamic paywalls, onboarding flows, remote configuration, and A/B testing systems for monetization optimization.

• Development Tools and Methodologies:

• Strong experience with Git workflows, branching strategies, pull requests, code reviews, CI/CD, and collaborative software development.

• Experience leading technical initiatives and coordinating Android, iOS, backend, and product teams.

• Proficient with Jira, Slack, Agile, and Scrum methodologies, including previous Scrum Master responsibilities.

• Advanced Android Studio and IntelliJ IDEA usage for debugging, profiling, memory analysis, performance optimization, refactoring, and multi-module/KMP project management.

• Experience with Docker, GitHub Actions, CI/CD pipelines, and cloud-based development workflows.

Operating Systems:

• Proficient in macOS, Linux, and Windows for development, automation, debugging, and environment management.

• Experience with CentOS and Ubuntu for server and Raspberry Pi deployments.

• Familiarity with Docker-based containerized development environments.

• Web Technologies:

• Working knowledge of HTML, CSS, JavaScript, TypeScript, and React for collaborating on hybrid mobile/web architectures.

• Integrated HTTP-rendered React interfaces into mobile applications through WebView-based MCP App architecture.

• Familiarity with REST APIs, WebSockets, authentication flows, deep links, and mobile-to-web interoperability.