hub.gazar.dev

The Hub

Everything in one table: courses taught live, the same material self-paced on gazar.dev, the free Lightning Lessons, and the shared reference the courses are built on.

4 live cohorts · 5 self-paced courses · 8 lightning lessons · 18 cheat sheets · 11 worked system designs · 31 tool guides · 1 reference.

Live Cohorts 4

Taught live on a schedule, in a small group. Each row opens the syllabus, with every session deck and project brief inside.

PageWeeksCode
From Senior to Staff: Master the Architecture Skills That Get You Promoted /senior-to-staff-4-weeks 4  
Production-Ready Systems with LLMs and Agents: An Intensive for Engineers /llms-and-agents-4-weeks 4 ehsangazar/maven-llms-and-agents-4-weeks
Production-Ready Systems with LLMs and Agents: An Intensive for Engineers /llms-and-agents 6 ehsangazar/maven-llms-and-agents-6-weeks
From Senior to Staff: Master the Architecture Skills That Get You Promoted /senior-to-staff 6  

Self-Paced Courses 5

The same material, recorded and open all year at gazar.dev. Start whenever, finish at your own speed.

Browse all 5 →
Production-Ready Systems with LLMs and Agentscode From Senior to Staff Engineer System Design Mastery Clean Code Masterycode Node.js and TypeScript for Interviews

Lightning Lessons 8

Free 30-minute live sessions. Each row opens the deck exactly as it was delivered.

On-Device LLMs: Ship Models to the Edge in 2026code Spec-Driven Development: Coding Agents That Shipcode Architecture Patterns for AI Systems, Senior to Staff Prompting Like an Engineer, Not a Wizard Your First LLM Feature, Beyond the Quickstart System Design for AI Agents, for Engineers Your System Design Answer Is Right But Unconvincing The ADR That Gets You Promoted

Cheat Sheets 18

Single-page references you can scan before an interview or a design review. Shared, so a sheet written for one course is linked from every course that needs it.

Browse all 18 →
System Design Estimation Cheat SheetSenior to Staff Data Stores Cheat SheetSenior to Staff Data at Scale Cheat SheetSenior to Staff PostgreSQL vs MongoDB Cheat SheetSenior to Staff Agent Patterns & Prompt-Injection Cheat SheetLLMs and Agents API Design & Networking Cheat SheetSenior to Staff Backend Clocks & Time Cheat SheetSenior to Staff Caching Strategies Cheat SheetSenior to Staff Consistency & Consensus Cheat SheetSenior to Staff Cost, Latency & Reliability Cheat SheetLLMs and Agents Evals & Observability Cheat SheetLLMs and Agents Kafka vs RabbitMQ Cheat SheetSenior to Staff Observability & SLO Cheat SheetSenior to Staff Production LLM System Design ChecklistLLMs and Agents RAG & Context Engineering Cheat SheetLLMs and Agents Resilience Patterns Cheat SheetSenior to Staff Security & Auth Cheat SheetSenior to Staff Workflow Patterns Cheat SheetLLMs and Agents

Worked System Designs 11

Classic prompts worked end to end with the course method, plus the two event-storming walkthroughs. Shared by the architecture courses.

Browse all 11 →
The System Design Interview FrameworkSenior to Staff Design Twitter / X: the home timelineSenior to Staff Design WhatsApp: chat and messagingSenior to Staff Design Stripe: paymentsSenior to Staff Design Uber: ride-sharingSenior to Staff Design YouTube: video streamingSenior to Staff Design Dropbox: file syncSenior to Staff Design Google Search: web searchSenior to Staff Design Ticketmaster: event ticketingSenior to Staff Event Storming, worked: a food-delivery platformSenior to Staff Event Storming, worked: ClubCP, a real codebaseSenior to Staff

Tool Guides 31

One decision-first page per tool: the one job it does, when to reach for it, when to skip it. Shared by the LLM and agent courses.

Browse all 31 →
Which tool, whenLLMs and Agents Arize PhoenixLLMs and Agents BraintrustLLMs and Agents Cohere RerankLLMs and Agents CrewAILLMs and Agents DeepEvalLLMs and Agents DSPyLLMs and Agents Guardrails AILLMs and Agents HaystackLLMs and Agents HeliconeLLMs and Agents InstructorLLMs and Agents Lakera GuardLLMs and Agents LangfuseLLMs and Agents LangGraphLLMs and Agents LangSmithLLMs and Agents LiteLLMLLMs and Agents Llama Guard & RebuffLLMs and Agents LlamaIndexLLMs and Agents Microsoft Agent FrameworkLLMs and Agents Model Context Protocol (MCP)LLMs and Agents NeMo GuardrailsLLMs and Agents OpenAI Agents SDKLLMs and Agents OpenRouterLLMs and Agents OpenTelemetry & OpenLLMetryLLMs and Agents PortkeyLLMs and Agents PromptfooLLMs and Agents Pydantic AILLMs and Agents RagasLLMs and Agents Semantic CachingLLMs and Agents Vector DatabasesLLMs and Agents vLLM & OllamaLLMs and Agents

Reference 1

Standalone data and research pages.

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