Jim Fellows | Software & Data Engineer https://jimfellows.dev/blog Experienced Engineer and Project Manager building resilient, full-stack data systems. en-us hi@jimfellows.dev (Jim Fellows) hi@jimfellows.dev (Jim Fellows) Sat, 07 Feb 2026 00:00:00 GMT https://jimfellows.dev/blog/building-ai-chatbot Building a Custom RAG Pipeline with Gemini API and pgvector https://jimfellows.dev/blog/building-ai-chatbot Architecting an independent, database-backed AI assistant utilizing Retrieval-Augmented Generation, pgvector for similarity search, and the Gemini API. Sat, 07 Feb 2026 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) aipostgresqlprismageminirag https://jimfellows.dev/blog/exploring-pglite-for-field-research Evaluating PGLite for Offline-First Maritime Applications https://jimfellows.dev/blog/exploring-pglite-for-field-research Architecting local-first data synchronization for NOAA research vessels: A technical evaluation of PGLite vs. SQLite for edge UI performance and cloud-sync capabilities. Thu, 16 Oct 2025 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) pglitelocal-firstreactelectronpostgresqloffline https://jimfellows.dev/blog/rockfish-camera-system Edge AI in the Field: Automating Biological Sampling Systems https://jimfellows.dev/blog/rockfish-camera-system Evolution of a marine computer vision system for NOAA: Transitioning from standard webcams to a networked, AI-ready edge device utilizing Raspberry Pi and FastAPI. Tue, 02 Sep 2025 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) pythonraspberry-picomputer-visioniotnoaafastapi https://jimfellows.dev/blog/data-tender-starlink-aws Real-Time Maritime Data Pipelines via Starlink and AWS https://jimfellows.dev/blog/data-tender-starlink-aws Modernizing NOAA's at-sea data collection: Replacing manual physical drives with automated AWS S3 synchronization utilizing ruggedized edge nodes and custom QML applications. Tue, 03 Jun 2025 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) pythonpyside6awsstarlinkpostgresqloffline-first https://jimfellows.dev/blog/sauna-monitor-project IoT Edge Monitoring: ESP32, CouchDB, and Vue.js https://jimfellows.dev/blog/sauna-monitor-project Developing a full-stack, remote environmental monitoring system utilizing an ESP32 microcontroller, MicroPython, and a Vue.js Progressive Web App. Fri, 28 Apr 2023 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) iotesp32vue-jscouchdbproject https://jimfellows.dev/blog/distributed-query-engines-drill-trino Distributed Query Engines for Enterprise Data Migration Verification https://jimfellows.dev/blog/distributed-query-engines-drill-trino Utilizing Apache Drill's 'schema-on-read' capabilities to execute zero-downtime data verification during a complex Oracle to MongoDB migration. Tue, 01 Feb 2022 00:00:00 GMT hi@jimfellows.dev (Jim Fellows) apache-drilltrinobig-datamigrationoraclemongodb