Principal Architect: Early Pajo (@EARL146)
Official Monorepo Repository: Production Source Code Archive
Welcome to the central repository documenting multi-year full-stack engineering milestones, software architectures, algorithms, backend microservices, mobile systems, and DevOps infrastructure.
├── 2024/
│ ├── web-system/ # Responsive web architecture, design system & storage helper
│ │ ├── index.html # High-throughput landing portal
│ │ ├── dashboard.html # Client metrics interface
│ │ ├── style.css # Design tokens, variables & grid
│ │ ├── components.css # Buttons, modals, badge styling
│ │ ├── app.js # Client lifecycle controller
│ │ └── storage_helper.js # LocalStorage wrapper with TTL & cache
│ ├── algorithms/ # Computer science data structures & algorithm benchmarks
│ │ ├── data_structures.js # LinkedLists, Stacks, Queues
│ │ ├── sorting_algorithms.py # QuickSort & MergeSort performance suite
│ │ ├── binary_search_tree.py # AVL self-balancing tree
│ │ ├── dynamic_programming.py # Knapsack & LCS algorithms
│ │ └── graph_traversal.py # BFS, DFS, Dijkstra shortest path
│ ├── database/ # Relational database models & security
│ │ ├── schema_v1.sql # Core tables & foreign key constraints
│ │ ├── users_and_roles.sql # RBAC tables & indexing
│ │ ├── audit_system.sql # Postgres trigger-based change log
│ │ └── sample_seed_data.sql # Development dataset
│ └── utilities/ # Helper libraries & computation modules
│ ├── date_formatter.js # ISO & relative time helper
│ └── math_helpers.py # Statistical computations (stdev, variance)
│
├── 2025/
│ ├── backend-services/ # Express / Node.js REST API microservices
│ │ ├── server.js # Main HTTP server & health endpoints
│ │ ├── auth_middleware.js # JWT Bearer authentication & verification
│ │ ├── product_routes.js # Product catalog routing & pagination
│ │ ├── user_routes.js # User profile management
│ │ ├── order_routes.js # Checkout processing routes
│ │ ├── token_service.js # Cryptographic token hashing & rotation
│ │ ├── error_handler.js # RFC 7807 centralized problem details
│ │ └── logger_service.js # Structured JSON log dispatcher
│ ├── dashboard/ # Enterprise analytics & administration portal
│ │ ├── admin_panel.html # KPI dashboard & chart containers
│ │ ├── admin_style.css # Clean dark-mode dashboard styling
│ │ └── charts_analytics.js # Dynamic Canvas telemetry renderer
│ ├── database/ # E-commerce relational schemas & ACID transactions
│ │ ├── ecommerce_schema.sql # Catalogs, inventory & order items
│ │ └── order_transactions.sql # Stored procedures for atomic checkout
│ └── microservices/ # Distributed integration services
│ ├── notification_service.py # SMS & Push notification handlers
│ ├── email_dispatcher.py # SMTP retry worker with backoff
│ └── payment_gateway_mock.js # Mock adapter for payment gateways
│
└── 2026/
├── mobile-app/ # Flutter / Dart mobile application
│ ├── main.dart # Application bootstrap & route configuration
│ ├── order_controller.dart # Reactive state manager & cart totals
│ ├── cart_model.dart # Cart item data structure
│ ├── menu_service.dart # Asynchronous catalog fetcher
│ ├── checkout_screen.dart # Order review & payment screen
│ └── theme_config.dart # Material 3 theme configurations
├── inventory-system/ # Real-time inventory tracking daemon
│ ├── inventory_manager.js # Stock decrement & low threshold alert
│ └── stock_tracker.py # Reconciliation auditor comparing POS & warehouse
├── security/ # Security and defense-in-depth layer
│ ├── rate_limiter.js # Sliding window rate limiter
│ └── payload_encryption.js # AES-256-GCM symmetric encryption
├── cloud-infrastructure/ # Containerization & cloud deployment
│ ├── docker-compose.yml # Postgres, Redis, API multi-container setup
│ ├── Dockerfile.api # Multi-stage production container
│ └── nginx.conf # Reverse proxy & SSL termination configuration
└── docs/ # System specifications & guidelines
├── SYSTEM_ARCHITECTURE.md # High-level topology & data flow
├── API_ENDPOINTS_SPEC.md # REST API endpoint reference
├── DATABASE_ERD.md # Mermaid Entity-Relationship diagram
├── DEPLOYMENT_RUNBOOK.md # Production rollouts & incident response
└── CONTRIBUTING.md # Git conventions & pull request guidelines
- Languages: JavaScript (ES6+), TypeScript, Python 3, Dart, SQL, Shell / PowerShell
- Backend & Frameworks: Node.js, Express, Flutter, PostgreSQL 16, Redis, Docker, Nginx
- Security & Reliability: JWT, AES-256-GCM, Rate Limiting, RBAC, Structured Logging
Early Pajo (EARL146)
Full-Stack Software Engineer
GitHub: https://github.com/EARL146