Full-stack development, Backend engineering, Frontend engineering, REST APIs, SaaS architecture, System architecture, Database design, Testing, Production deployment, Generative AI, LLM applications, RAG, Embeddings, Vector search, Semantic search, Prompt engineering, AI automation, Enterprise AI, AI product engineering, Application security, Cloud security, Secure software engineering, DevSecOps, Authentication, Authorization, API security, Encryption, Security hardening, Risk awareness, AWS, EC2, Linux, Ubuntu, Nginx, Server administration, Cloud infrastructure, CI/CD, Production systems, Infrastructure security, JavaScript, TypeScript, Python, React, Next.js, React Native, Node.js, Express.js, PostgreSQL, Prisma, Redis, Git, Expo, EAS, SaaS product development, Product strategy, Technical leadership, Startup development, Client engagement, Technical sales, Team leadership