Null Coast HoldingsTechnical Lead
Aug. 2024United States● Designed and implemented a Retrieval-Augmented Generation (RAG) system in Java 21 using Spring Boot 3.2+, integrating LangChain4j, Spring AI, and Ollama for local LLM inference and reasoning over structured and unstructured data.
● Engineered a hybrid data pipeline with PostgreSQL + pgvector for persistent embeddings and Redis Stack + RediSearch for fast
vector search, optimizing semantic recall and token efficiency.
● Deployed monitoring with Prometheus + Grafana to track model latency and system performance.
● Launched FauxThreads.com, a print-on-demand Shopify store, by building automated infrastructure to manage the entire design-to-publish pipeline. Used n8n, Shopify GraphQL API, and Printful API to automate product creation, image uploads, pricing logic, and metadata generation.