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Davedave001/README.md

Hi there, I'm David Otieno 👋

Typing SVG

🧑‍💻 About Me

🔧 Backend & Platform Engineering

  • Distributed systems design & microservices architecture
  • REST, GraphQL, gRPC & WebSocket API development
  • Event-driven systems — Kafka, RabbitMQ, async pipelines
  • Serverless & cloud-native platform engineering
  • Authentication — OAuth2, JWT, Zero-Trust, DID systems
  • ERP & enterprise system integrations
  • High-throughput API design & performance optimization
  • CI/CD pipeline design & DevOps workflows

⛓️ Blockchain & Smart Contract Engineering

  • Smart contract development — Solidity & Hedera Hashgraph
  • Token design — ERC-20, ERC-721, HTS, NFTs, DAOs
  • DeFi protocols & decentralized application architecture
  • On-chain / off-chain data bridging & oracle integrations
  • Multi-chain infrastructure & cross-chain interoperability
  • Blockchain supply chain, traceability & RWA tokenization
  • IPFS, decentralized storage & content addressing
  • Web3 wallet integrations — MetaMask, WalletConnect, DID

🤖 AI & Agentic Systems

  • Agentic AI orchestration — LangChain, LangGraph, CrewAI
  • RAG pipelines, vector databases & retrieval optimization
  • Model Context Protocol (MCP) server development
  • LLM API integration — OpenAI, Anthropic, Gemini
  • AI workflow automation & multi-agent systems
  • LLM evaluation & observability with LangSmith
  • Fine-tuning & PEFT — LoRA, QLoRA, Hugging Face
  • Privacy-preserving local AI deployments

🏗️ Systems & Infrastructure

  • Kubernetes orchestration & container management
  • Multi-cloud deployments — AWS, GCP, Azure
  • IoT sensor integration & edge data pipelines
  • Digital twin development & industrial intelligence
  • Data governance, quality & reporting infrastructure
  • Real-time monitoring & observability (Prometheus, Grafana)
  • Security standards — GDPR, ISO/IEC 27001, OWASP
  • Platform SDK design & developer tooling
 
📍 Nairobi, Kenya  ·  🌍 Delivering across Africa, Gulf, South Asia & APAC

🛠️ Languages & Tools

💻 Programming Languages

Python JavaScript TypeScript Solidity C C++ C# Dart SQL

⚙️ Backend Engineering & APIs

FastAPI Django Flask .NET Core Node.js GraphQL gRPC WebSockets JWT Celery Swagger

🏗️ Platform & System Engineering

Microservices Kafka RabbitMQ Nginx Serverless n8n Make.com TOGAF

🤖 AI / LLM / Agentic Systems

LangChain LangGraph MCP OpenAI Claude Gemini HuggingFace LlamaIndex LangSmith Pinecone Weaviate ChromaDB

🔗 Blockchain & Web3

Hedera Ethereum Hardhat Foundry Web3.js Ethers.js IPFS MetaMask WalletConnect

🗄️ Databases & Storage

PostgreSQL MongoDB MySQL Firebase Redis LanceDB SQLAlchemy

☁️ Cloud, DevOps & Infrastructure

AWS GCP Azure Docker Kubernetes GitHub Actions Terraform Lambda Prometheus Grafana Vercel

🎨 Frontend & Mobile

React Next.js Flutter React Native Tailwind

🧠 ML / Data Science

PyTorch TensorFlow scikit-learn Pandas NumPy MLflow W&B Jupyter

🔧 Developer Tools

Git GitHub Postman VS Code Cursor Notion Jira Figma Miro

🏛️ Platform Architecture Stack

┌─────────────────────────────────────────────────────────────────────────┐
│                     DAVID'S PLATFORM ENGINEERING STACK                  │
├─────────────────────────────────────────────────────────────────────────┤
│  CLIENT LAYER    │  React / Next.js / Flutter / React Native            │
├─────────────────────────────────────────────────────────────────────────┤
│  API GATEWAY     │  FastAPI / REST / GraphQL / gRPC / WebSockets        │
├─────────────────────────────────────────────────────────────────────────┤
│  AI LAYER        │  LangGraph Agents / RAG / MCP / LLM APIs             │
├─────────────────────────────────────────────────────────────────────────┤
│  BACKEND SVCS    │  Django / Flask / .NET Core / Node.js / Celery       │
├─────────────────────────────────────────────────────────────────────────┤
│  EVENT BUS       │  Kafka / RabbitMQ / Event-Driven Architecture        │
├─────────────────────────────────────────────────────────────────────────┤
│  BLOCKCHAIN      │  Hedera / Ethereum / Smart Contracts / IPFS          │
├─────────────────────────────────────────────────────────────────────────┤
│  DATA LAYER      │  PostgreSQL / MongoDB / Redis / LanceDB / Firebase   │
├─────────────────────────────────────────────────────────────────────────┤
│  INFRA           │  Docker / Kubernetes / AWS / GCP / Azure / CI/CD     │
└─────────────────────────────────────────────────────────────────────────┘

🌍 Connect With Me

LinkedIn Gmail Chaintum ZigoTrace

"Building production-grade backend systems and AI infrastructure — where distributed architecture meets autonomous intelligence."

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