Senior Backend Engineer with 18+ years of experience building scalable web applications, primarily in PHP and Node.js. I operate as a T-shaped developer, combining clean backend architecture with a practical understanding of cloud infrastructure (AWS) and edge computing. I focus on system reliability and performance. A recent highlight: I reduced CI pipeline time from 30 to under 5 minutes by identifying I/O bottlenecks (moving operations to tmpfs) and optimizing test execution. I use AI-assisted tools (LLMs, coding assistants) to speed up prototyping, debugging, and everyday development tasks. I work closely with DevOps teams and understand production environments, which helps me deliver reliable and maintainable systems.