About
Hi, I’m Sebastian PE — a full-stack software engineer with 15+ years of experience building web products, backend systems, and developer tools. What I Do I work across the entire product lifecycle — from architecture and prototyping to launch and operation. My current focus: Go — high-performance backend services, concurrent systems, microservices AI & LLM Agents — prompt engineering, RAG pipelines, agentic orchestration PHP & JavaScript — full-stack web development, API design DevOps — CI/CD, observability, infrastructure as code I’ve built e-commerce platforms, web portals, CRM and ERP systems, and business tools. I also have extensive experience as a team lead and head of development, managing engineering teams and designing software architecture. ...