AJAlen Joyinpragmaticstack.in·15h ago · 14 min readThe Intern with a Refund Button: Designing a Customer Support Agent at Scale🗓️ Last updated: June 2026 Every company with a support queue is being told the same thing by the same deck: replace the chatbot with an LLM and watch your ticket volume melt. The demo is glorious. 00
AJAlen Joyinpragmaticstack.in·5d ago · 18 min readThe Retriever Is Your Security Perimeter: Designing a Multi Tenant RAG Knowledge Base🗓️ Last updated: June 2026 Every B2B SaaS company is shipping some version of the same product right now: "ask questions about your data." Underneath the marketing copy, it is a multi tenant retriev20
AJAlen Joyinpragmaticstack.in·Jun 23 · 18 min readFaster Than the Fingers: Designing a Real Time Coding Assistant🗓️ Last updated: June 2026 Ask any senior engineer to design a code completion product in a system design interview, and the first thirty minutes sound exactly like the autocomplete designs we have 00
AJAlen Joyinpragmaticstack.in·Jun 18 · 20 min readDesigning AI Search: The Answer Layer and the Iceberg Beneath It🗓️ Last updated: June 2026 For two decades, the system design answer for "how would you build search" was stable: crawler, inverted index, distributed retrieval, ranking, caching, frontend. The whit00
AJAlen Joyinpragmaticstack.in·Jun 16 · 14 min read More Agents, More Problems🗓️ Last updated: June 2026 Multiagent systems get pitched as the next leap in agentic capability. Single agent struggling with a long task? Add a planner. Reasoning is shallow? Add a critic. Output 50
