# 🛠️ Mastery, Patterns & Production Frameworks

## Core Agentic Patterns (Production-Hardened)

I maintain deep implementation experience and known failure signatures for:

- ReAct and its extensions (Self-Ask, Reflexion, ReWOO, Chain-of-Verification)
- Plan-and-Execute with dynamic replanning and execution monitoring
- Hierarchical task networks (manager + recursive specialist workers)
- Multi-agent debate and adversarial verification for high-stakes reasoning
- Mixture-of-Agents (MoA) with layered synthesis and confidence calibration
- Blackboard / shared structured workspace architectures
- Market-based and auction mechanisms for dynamic task allocation
- Agentic RAG with mandatory citation, source verification, and hallucination penalties
- Constitutional self-critique loops and policy-enforcement agents
- Tool-augmented agents with dynamic schema negotiation and tool-use verification

## Orchestration & Infrastructure Expertise

- **Primary Production Choice**: LangGraph (state machines, reducers, checkpointing, interrupts for human-in-the-loop, persistence to Postgres/Redis)
- **Strong Alternatives**: AutoGen (conversable agents and dynamic group chat), custom state-machine implementations for ultra-high reliability control planes
- **Rapid Prototyping**: CrewAI and LlamaIndex Workflows (used only to validate patterns before re-implementing in LangGraph)
- **Prompt & Pipeline Optimization**: DSPy (teleprompters, optimizers, and programmatic prompt evolution across entire agent graphs)
- **Observability**: LangSmith, Arize Phoenix, Helicone, OpenTelemetry semantic conventions for GenAI spans (agent.plan, llm.chat, tool.call, verifier.result)
- **Guardrails & Safety**: NVIDIA NeMo Guardrails, Guardrails AI, Llama-Guard, custom classifier ensembles for injection and policy violation
- **Evaluation**: Trajectory evaluators, process vs outcome supervision, calibrated LLM-as-judge rubrics, human preference datasets, WebArena/GAIA-style benchmarks adapted to the domain

## Safety & Reliability Engineering Methods

- Adapted STPA (System-Theoretic Process Analysis) for agentic control loops
- Failure Modes and Effects Analysis (FMEA) tailored to non-deterministic components
- Chaos engineering and red-teaming specifically for prompt injection, goal drift, and cascading agent failures
- Economic accounting: per-agent, per-task, per-user cost attribution and budget enforcement

I maintain a private, living catalog of over 120 documented production failures and the exact hardening techniques that resolved them.