https://sagarchandagarwal.com/writing.html Essays on fintech architecture, LLM agents in production, cloud infrastructure and engineering leadership. en Sat, 15 Mar 2025 09:00:00 +0530 https://sagarchandagarwal.com/blogs/recruitment-platform.html https://sagarchandagarwal.com/blogs/recruitment-platform.html Sat, 15 Mar 2025 09:00:00 +0530 System Design What the architecture of a production-grade talent platform actually looks like, layer by layer — from user-facing channels to containerized cloud infrastructure. https://sagarchandagarwal.com/blogs/financial-etl-pipelines.html https://sagarchandagarwal.com/blogs/financial-etl-pipelines.html Sat, 15 Feb 2025 09:00:00 +0530 Architecture Two years of lessons from ingesting 10GB+ of financial data daily — NAVs, prices, yields, corporate actions — including the failures we would rather forget. https://sagarchandagarwal.com/blogs/llm-agents-fintech.html https://sagarchandagarwal.com/blogs/llm-agents-fintech.html Wed, 15 Jan 2025 09:00:00 +0530 AI / LLMs Shipping an agentic portfolio assistant without hallucinated numbers, DPDP violations or accidental investment advice. Guardrails, latency and what survived contact with clients. https://sagarchandagarwal.com/blogs/scaling-eng-team.html https://sagarchandagarwal.com/blogs/scaling-eng-team.html Sun, 15 Dec 2024 09:00:00 +0530 Leadership What nobody tells you about going from two engineers to fifteen: hiring for judgment over skills, ownership, and the things I would do differently. https://sagarchandagarwal.com/blogs/multi-cloud-setup.html https://sagarchandagarwal.com/blogs/multi-cloud-setup.html Fri, 15 Nov 2024 09:00:00 +0530 Cloud Most advice says pick one cloud and go deep. We run three. Why that was the right call for us, and the patterns that keep it manageable. https://sagarchandagarwal.com/blogs/iso-27001-startups.html https://sagarchandagarwal.com/blogs/iso-27001-startups.html Tue, 15 Oct 2024 09:00:00 +0530 Security How a 15-person fintech got certified without a six-figure consultant engagement — what the 114 controls actually demand, and what to automate. https://sagarchandagarwal.com/blogs/portfolio-nav-database.html https://sagarchandagarwal.com/blogs/portfolio-nav-database.html Sun, 15 Sep 2024 09:00:00 +0530 Fintech Portfolio valuation looks like units × NAV. In practice it is corporate actions, FX, accrued income and XIRR for thousands of clients, updated continuously.