https://gunraj.dev Writing on AI engineering, privacy, cloud infrastructure, and building systems that last. en https://gunraj.dev/writing/privacy-signals-training-data.html Wed, 03 Sep 2026 00:00:00 +0000 Why DSR workflows break the moment personal data enters a training pipeline — and what to build before that happens. https://gunraj.dev/writing/ai-evaluation-harness.html Wed, 12 Aug 2026 00:00:00 +0000 The same reason you backtest a trading strategy before putting money behind it applies to LLMs in production. https://gunraj.dev/writing/evals-are-not-tests.html Mon, 14 Jul 2026 00:00:00 +0000 The gap between correct and acceptable is where most teams lose time they didn't know they were spending. https://gunraj.dev/writing/privacy-engineering-habits.html Sun, 01 Jun 2025 00:00:00 +0000 Practical habits that make access and deletion flows less painful when regulations eventually show up. https://gunraj.dev/writing/async-file-watching-notes.html Sun, 01 Aug 2021 00:00:00 +0000 inotify, FSEvents, and the edge cases that make file watching harder than it looks. https://gunraj.dev/writing/container-first-modernization.html Sat, 01 May 2021 00:00:00 +0000 What actually works when containerizing a legacy ETL stack without a six-month roadmap. https://gunraj.dev/writing/building-a-simple-strategy-tester.html Sun, 01 Mar 2020 00:00:00 +0000 A minimal backtesting harness that teaches you where strategies actually break. https://gunraj.dev/writing/trend-testing-algorithmic-trading.html Wed, 13 Nov 2019 00:00:00 +0000 Statistical rigour for strategies that look good on paper and need to prove it.