Programming: Python, SQL, C++, TypeScript, Java, R, JavaScript, MATLAB, Cypher

LLM & Agentic AI: Claude API (tool calling, MCP), GPT-4o, LangChain, RAG, FAISS, ChromaDB, Sentence Transformers, CLIP, prompt engineering, LLM-as-a-judge evaluation, agent orchestration, evals & guardrails

Voice & Real-Time Systems: ASR/NLU integration, voice activity detection, gRPC/WebRTC streaming, real-time audio chunking, session state machines, on-prem/edge/hybrid deployment

Machine Learning & Deep Learning: PyTorch, TensorFlow, Keras, Scikit-learn, XGBoost, LightGBM, CNNs, Vision Transformers, GANs, reinforcement learning (PPO, DQN), distributed data parallel, multi-GPU training, Optuna

Data Engineering: Apache Spark, PySpark, Kafka, Airflow, dbt, Dask, stream processing, ETL/ELT, Great Expectations, medallion architecture

Databases & Cloud: PostgreSQL, MySQL, MongoDB, Neo4j, Snowflake, BigQuery, Redis, Supabase, AWS (EC2, S3, Lambda), GCP (BigQuery, GCS, Pub/Sub)

MLOps & Production: Docker, Kubernetes, MLflow, CI/CD, GitHub Actions, model monitoring, Prometheus, Grafana, Terraform, FastAPI, gRPC, package publishing (PyPI, npm)

Statistics & Experimentation: A/B testing, Bayesian inference, sequential testing, multi-armed bandits, causal inference, time series (ARIMA, GARCH), Monte Carlo simulation

Quantitative Finance: options pricing (Black-Scholes, Heston, Monte Carlo), portfolio optimization, vectorized backtesting, statistical arbitrage, VaR / Expected Shortfall

Visualization & BI: Tableau, matplotlib, seaborn, Plotly, Grafana, Jupyter