- AI / LLM
- Large language models, Groq API, Claude API (Anthropic), Ollama, LangChain, prompt engineering, RAG pipelines, LLMOps.
- Machine learning
- Neural networks, SVM, LSTM, deep learning, transformer architecture, activity recognition, computer vision, FaceID.
- GPU / inference
- NVIDIA CUDA, RTX 3060 / 4070 Ti, GPU-accelerated inference, Ubuntu 22/24 server administration.
- Mobile
- Android: MVVM, RxJava2, Retrofit, Room, BLE/GATT, StoreKit 2, Google Play Billing. iOS: Swift, Objective-C, Xcode.
- Backend & web
- Java, Python, PHP, REST API design, SmartGWT, Yii, Node.js, Apache. HTML/CSS/JS, jQuery, AJAX, React (Tailwind).
- Databases
- MySQL, SQLite, Room, Firebird, Interbase, PostgreSQL. DDL/DML, stored procedures, triggers, replication.
- Embedded / IoT
- ESP32, BLE (GATT), RF circuit design (ADF4351, NanoVNA V2), light sensors, barcode (ANSI C), Fortran, C/C++.
- Signal processing & DevOps
- Fourier/Laplace/Z transforms, 2D/3D image processing. Linux (Ubuntu), Git, Docker, Claude Code, cron, Android Studio, Xcode.