# diljitpr.net — Diljit's Personal Site > Diljit is a software engineer with experience at companies including Wayfair, Twilio, SingleStore, Zalando, PayPal, Nutanix, and Hewlett Packard. He specialises in distributed systems, system design, PostgreSQL, Kafka, and supply chain engineering. This site contains technical blog posts, an interactive LLM course, and a professional biography. ## Blog Posts - The Anatomy of a Great Prompt (2026-02-11): https://diljitpr.net/blog-post-2026-02-11-anatomy-of-great-prompt-llm-guide.html - Inside ~/.claude: Claude Code Filesystem Architecture (2026-02-24): https://diljitpr.net/blog-post-2026-02-24-inside-dot-claude-filesystem-architecture.html - Using PostgreSQL as a Dead Letter Queue (2025-12-25): https://diljitpr.net/blog-post-postgresql-dlq.html - How We Migrated a Postgres Database on GCP with Minimal Downtime (2024-08-08): https://diljitpr.net/blog-post-2024-08-08-postgres-database-migration-gcp-minimal-downtime.html - Using Merkle Trees to Detect Data Variance (2024-09-02): https://diljitpr.net/blog-post-2024-09-02-merkle-trees-detect-data-variance.html - Sending Automated Appointment Reminders with PostgreSQL, n8n, and WhatsApp (2026-02-01): https://diljitpr.net/blog-post-2024-08-10-sending-automated-appointment-reminders-postgresql-google-sheets-n8n-whatsapp.html - Building a Real-Time, Streamable Online FM Radio Player (2024-08-08): https://diljitpr.net/blog-post-2024-08-08-building-real-time-streamable-online-fm-radio-player.html - Running a 3-Node Home Lab Cluster on Refurbished Lenovo ThinkCentres (2024-08-09): https://diljitpr.net/blog-post-2024-08-09-running-3-node-home-lab-cluster-refurbished-lenovo-thinkcentres.html ## Course - How Large Language Models Work — Interactive $1 Course: https://diljitpr.net/course-how-llms-work.html ## Other - Blog index: https://diljitpr.net/blog.html - Photo gallery: https://diljitpr.net/photos.html ## Author Diljit — Software Engineer Email: diljit@diljitpr.net Current employer: Wayfair (Supply Chain Engineering)