Backend: PHP (Laravel, Symfony), Python (FastAPI, Flask, TensorFlow, Keras, scikit-learn), GoLang (Fiber), Node.js (Express, Fastify) • Frontend: React, Next.js, Astro, TypeScript • Databases: PostgreSQL, MongoDB • Cloud: AWS (S3, RDS, EC2, ECS, EKS) • DevOps: Linux, Self-hosting, Docker