https://harichandra.vercel.app Backend engineer in Hyderabad building production LLM systems — agentic RAG, evaluation harnesses, and the REST APIs and data models underneath them. en Sun, 18 Oct 2026 00:00:00 GMT https://harichandra.vercel.app/projects/coding-agent-harness https://harichandra.vercel.app/projects/coding-agent-harness A coding agent built on LangGraph from scratch — a planner, a ReAct tool loop, and a network-disabled Docker sandbox — graded against 50 real Django and Sphinx issues from SWE-bench Verified Mini. Sun, 18 Oct 2026 00:00:00 GMT projects https://harichandra.vercel.app/projects/this-site https://harichandra.vercel.app/projects/this-site The portfolio itself — an MDX content pipeline validated by Zod at build time, and a single shared WebGL canvas that's capability-gated and never blocks first paint. Thu, 27 Aug 2026 00:00:00 GMT projects https://harichandra.vercel.app/blog/how-this-site-is-built https://harichandra.vercel.app/blog/how-this-site-is-built The architecture behind this portfolio — one shared WebGL canvas, MDX content validated at build time, and a deliberate rule that adding anything is one file. Tue, 04 Aug 2026 00:00:00 GMT posts https://harichandra.vercel.app/lab/sine-field https://harichandra.vercel.app/lab/sine-field Two out-of-phase trig waves multiplied together — the cheapest displacement that doesn't look like it repeats. Tue, 04 Aug 2026 00:00:00 GMT lab https://harichandra.vercel.app/projects/macos-troubleshooting-agent https://harichandra.vercel.app/projects/macos-troubleshooting-agent An agentic RAG system for macOS troubleshooting — a branching LangGraph, a domain knowledge base built from 9 scrapers, and a blind-judge evaluation harness that blocks its own deploys on quality regressions. Mon, 27 Jul 2026 00:00:00 GMT projects https://harichandra.vercel.app/projects/finance-dashboard-api https://harichandra.vercel.app/projects/finance-dashboard-api A Spring Boot REST API for personal finance tracking, with a security layer that returns proper 401/403 JSON instead of Spring's default HTML redirects, and JPA projections that push aggregation into SQL. Sat, 04 Apr 2026 00:00:00 GMT projects https://harichandra.vercel.app/projects/e-wallet-microservices https://harichandra.vercel.app/projects/e-wallet-microservices A digital wallet decomposed into four Spring Boot services communicating over Kafka, with per-service data ownership and dedicated consumer groups for wallet-creation and transaction-update events. Thu, 09 Oct 2025 00:00:00 GMT projects https://harichandra.vercel.app/projects/reliable-video-transfer https://harichandra.vercel.app/projects/reliable-video-transfer A hand-rolled reliability layer over raw UDP sockets in C — sequence numbering, acknowledgements, gap detection, and retransmission — built to understand what TCP does by implementing a subset of it. Fri, 03 Jan 2025 00:00:00 GMT projects