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    <title>Said Mustafa Said · Blog</title>
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    <description>Technical writing on AI engineering, cloud infrastructure, and LLM systems.</description>
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      <title><![CDATA[Shipping Agents Is a Level of Its Own]]></title>
      <link>https://saidmustafasaid.com/blog/content-15-shipping-agents</link>
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      <description><![CDATA[Most agent projects die between the demo and the deploy. Shipping agents to production is its own engineering discipline: serving, cost, observability, and durable execution. Here is the last rung of the ladder.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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      <title><![CDATA[An Agent You Cannot Measure Is an Agent You Cannot Improve]]></title>
      <link>https://saidmustafasaid.com/blog/content-14-measuring-agents</link>
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      <description><![CDATA[Measuring agents is the skill that separates a demo from a product. It looked fine when I tried it is not measurement, and this is how you replace that feeling with numbers you can trust.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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      <title><![CDATA[Agents You Can Trust Are Built From Guardrails]]></title>
      <link>https://saidmustafasaid.com/blog/content-13-agents-you-can-trust</link>
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      <description><![CDATA[A demo that works once is not a product. Agent security is the discipline of bounding what an agent can do: guardrails, prompt injection defence, least privilege, and graceful failure.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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      <title><![CDATA[When One Agent Is Not Enough]]></title>
      <link>https://saidmustafasaid.com/blog/content-12-when-one-agent-is-not-enough</link>
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      <description><![CDATA[Most problems never need a multi-agent system. Here is the honest cost of a swarm, when you actually earn one, and the coordination tax nobody prices in.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[Building a Single Agent Is a Loop With a Goal]]></title>
      <link>https://saidmustafasaid.com/blog/content-11-building-a-single-agent</link>
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      <description><![CDATA[A single agent is not clever wiring. It is one loop that plans, acts, remembers, and corrects toward a goal. Its quality is decided by one thing: what you let into the context window.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[Tools Turn a Chatbot Into an Actor]]></title>
      <link>https://saidmustafasaid.com/blog/content-10-giving-models-tools</link>
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      <description><![CDATA[A chatbot answers. An agent acts. The one thing between them is a tool. This is how giving models tools works: schemas, the agentic loop, routing, and the MCP standard that kills bespoke glue.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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      <title><![CDATA[RAG Is a Search Problem Wearing an AI Costume]]></title>
      <link>https://saidmustafasaid.com/blog/content-9-giving-models-your-knowledge</link>
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      <description><![CDATA[RAG lets a model answer from your data without retraining. But RAG is a search problem in disguise, and it fails exactly where search fails, not where AI fails. Here is the whole retrieval pipeline, including the parts everyone skips.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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      <title><![CDATA[Prompt Engineering Is Software Engineering]]></title>
      <link>https://saidmustafasaid.com/blog/content-8-talking-to-models</link>
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      <description><![CDATA[Prompt engineering looks like writing to a chatbot. The moment your code has to parse the reply, it becomes software engineering: system prompts, JSON Schema, function calling, and retry loops.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[A Language Model Is a Probability Machine]]></title>
      <link>https://saidmustafasaid.com/blog/content-7-how-a-language-model-works</link>
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      <description><![CDATA[How a language model works comes down to one fact: it predicts the next token. Tokens, embeddings, attention, context, and every sampling knob you touch all live inside that single trick.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[The Applied AI Engineering Ladder]]></title>
      <link>https://saidmustafasaid.com/blog/content-6-the-applied-ai-engineering-ladder</link>
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      <description><![CDATA[AI engineering is not machine-learning math. It is a ladder of nine engineering skills, and every level assumes the one below it. Skipping rungs is why most agent projects fail.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[Zero-Downtime Deploys on a Raspberry Pi]]></title>
      <link>https://saidmustafasaid.com/blog/content-5-zero-downtime-deploys-on-a-raspberry-pi</link>
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      <description><![CDATA[People think zero-downtime deployment needs Kubernetes and a cloud bill. It needs one moving pointer. I run it on a Raspberry Pi on my desk, and the pattern is the same one the big platforms sell you.]]></description>
      <pubDate>Sat, 11 Jul 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[What an LLM Actually Is]]></title>
      <link>https://saidmustafasaid.com/blog/content-4-what-an-llm-actually-is</link>
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      <description><![CDATA[A language model does one thing. It predicts the next token. That single trick is the engine under every agent you will build, and knowing it is what separates steering a model from guessing at it.]]></description>
      <pubDate>Tue, 30 Jun 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[AI Engineering]]></category>
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    <item>
      <title><![CDATA[Why One CV Cannot Win Every Job]]></title>
      <link>https://saidmustafasaid.com/blog/content-2-why-one-cv-cannot-win-every-job</link>
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      <description><![CDATA[Most people send the same CV to every job and wonder why nothing comes back. A good CV is a tailored CV, but tailoring by hand does not scale. So I built a system that does it properly, for every job.]]></description>
      <pubDate>Sat, 20 Jun 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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    <item>
      <title><![CDATA[How My Rank is Calculated]]></title>
      <link>https://saidmustafasaid.com/blog/content-1-the-12-field-system</link>
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      <description><![CDATA[The rank you see is not a self-assessment. It is produced by a three-layer calibration engine that reads the shape of a career, not just its length.]]></description>
      <pubDate>Thu, 30 Apr 2026 00:00:00 GMT</pubDate>
      <author>contact@saidmustafasaid.com (Said Mustafa Said)</author>
      <category><![CDATA[Engineering]]></category>
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