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Just Start Building Matters More Than Ever. – Hart Rossman
Bartosz Jelen

Hi! I’m Bartosz

I'm Bartosz — a Senior Cloud Security Engineer building at the intersection of AI and security.

I looked for practical, hands-on AI projects built specifically for security engineers — real tools, real stacks, deployable code. I couldn’t find them, so I started building them myself.

Here you’ll find step-by-step tutorials, architectural breakdowns, and honest takes on where AI is taking security operations. Everything is designed to run, fork, or adapt to your environment. Have ideas, tweaks, or want to work together? Reach out 🤝

Let’s create together!

Cloud Security | Automation | AI

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The Journal

One Prompt. Claude Fixed My Broken SIEM Feed.

One Prompt. Claude Fixed My Broken SIEM Feed.

A real-world POC: I gave Claude access to Elastic SIEM, Jira, Confluence, and Gmail — and let it triage a broken log feed autonomously. Here's exactly what happened, and how to set it up yourself.

Build Your First AI Agent: From Static AI to Autonomous Systems

Build Your First AI Agent: From Static AI to Autonomous Systems

Build your first autonomous AI agent with CrewAI — deployable Python code, multi-agent systems, and real API integrations for security engineers.

How to Talk to AI: Human–Computer Communication in the LLM Era

How to Talk to AI: Human–Computer Communication in the LLM Era

A practical field guide to prompting for security engineers — use structure, context, and examples to get consistent, high-quality results from LLMs.

Understanding RAG: Build a Security Assistant with Cloud Run, Firestore, and Vertex AI

Understanding RAG: Build a Security Assistant with Cloud Run, Firestore, and Vertex AI

Build a RAG-powered security assistant on Google Cloud using Firestore and Vertex AI — deployable threat intelligence with context-aware responses.