Adrian User

I’m a Full-Stack and AI Engineer with 8+ years of experience across real-time payments, enterprise AI, and autonomous security products. My work focuses on RAG systems, PostgreSQL-native vector search, LLM flows, and backend product architecture—especially where mistakes affect money, security, compliance, or customer trust.

In my recent role, I advanced the validation and execution layer of an autonomous offensive security platform. I built deterministic exploit-validation flows so reported findings had to reproduce against the actual target before reaching customer-facing dashboards, and I orchestrated Kubernetes-based agent lifecycle, task queues, and result aggregation across isolated customer environments.

Before that, I delivered RAG engineering for a knowledge assistant that indexed years of project reports and architecture decisions for grounded natural-language search. I standardized PostgreSQL-native RAG into pgRAG using pgvector, improved retrieval via chunking strategies, and built LLM enrichment flows while raising client handoff quality through clear architecture decisions and practical maintenance guidance.