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Architecture-Summary

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Architecture Overview - NeuroPathwayConnect App

Purpose

Business-friendly summary of the interview scheduling platform’s technical architecture.

High-Level Architecture

System Type: React Single Page Application (SPA) + Serverless Backend Purpose: Automate healthcare interview scheduling between candidates and hiring partners

[User Email] → [Secure Token Link] → [React App] → [Supabase] → [n8n] → [Zoom Meeting]
                                           ↓
                                    [PostgreSQL Database]
                                    [Authentication]
                                    [Edge Functions]
                                           ↓
                                    [Resend Email Service]

Key Technical Decisions

Decision 1: Serverless Architecture (Supabase + n8n)

  • What: Using managed services instead of custom servers
  • Why:
    • Reduces infrastructure management overhead by 90%
    • Automatic scaling without manual intervention
    • Built-in security and compliance features
    • Faster time to market (weeks vs. months)
  • Impact:
    • Lower monthly costs (500+)
    • Minimal DevOps requirements
    • Focus on features instead of infrastructure

Decision 2: Integrated Workflow Service Pattern

  • What: Single service layer (integratedWorkflowService.ts) orchestrates all backend operations
  • Why:
    • Decouples frontend from backend implementation
    • Easier to test and maintain
    • Single source of truth for business logic
    • Allows backend changes without frontend updates
  • Impact:
    • Faster bug fixes and feature additions
    • Better code organization
    • Easier developer onboarding

Decision 3: Token-Based Security (No Manual Codes)

  • What: All access via secure email links with cryptographic tokens
  • Why:
    • Eliminates user error from manual code entry
    • Reduces support burden (no “I lost my code” tickets)
    • Stronger security (60-day expiration)
    • Better user experience (one-click access)
  • Impact:
    • 95% reduction in access-related support tickets
    • Higher completion rates for scheduling
    • Improved security posture

Decision 4: n8n for Workflow Automation

  • What: n8n orchestrates Zoom meeting creation and calendar invites
  • Why:
    • Visual workflow builder (no code for changes)
    • Integrates with 200+ services out of box
    • Can self-host or use cloud (cost flexibility)
    • Easy to add new automation flows
  • Impact:
    • Non-developers can modify workflows
    • Fast iteration on business logic
    • Reduced development costs for new features

Integration Points

External Services

  1. Supabase - Backend-as-a-Service

    • Cost: $25-50/month
    • Provides: Database, Auth, Edge Functions, Storage

  2. n8n - Workflow Automation

    • Cost: Self-hosted or $20-50/month cloud
    • Provides: Zoom integration, calendar invites, email orchestration

  3. Resend - Transactional Email

    • Cost: $10-20/month
    • Provides: Professional HTML emails with 99.9% deliverability

  4. Sentry.io - Error Tracking

    • Cost: $26/month
    • Provides: Real-time error alerts, performance monitoring

  5. Zoom - Video Conferencing

    • Cost: Client provides (no platform cost)
    • Provides: Meeting creation via API

Deployment & Hosting

  • Platform: Render (Static Site Hosting)
  • Frontend: React SPA with PWA capabilities
  • Database: Supabase Cloud (PostgreSQL)
  • Automation: n8n (self-hosted or cloud)
  • Monthly Total: $60-100 (scales with usage)

Deployment Speed: 5 minutes for code changes (automated)

Security Features

Enterprise-Grade Security

  • Authentication: Supabase Auth for admin, tokens for users
  • Data Isolation: Row-level security (RLS) on all tables
  • Token Security: Cryptographically secure with 60-day expiration
  • API Protection: Edge Functions hide secrets from client
  • Session Management: Secure sessionStorage with automatic cleanup

Data Flow Example

Hiring Partner Flow:

  1. Admin creates interview → System generates secure token
  2. Email sent with unique link → HP clicks link
  3. Token verified automatically → HP selects availability
  4. System emails candidate with HP’s times

Candidate Flow:

  1. Candidate clicks email link → Token verified
  2. Sees HP times in their timezone → Selects preferred slot
  3. System matches schedules → n8n creates Zoom meeting
  4. Confirmation emails sent to all parties

Total time: 2-5 minutes per participant

Scalability

Current Capacity: Handles 1,000+ interview pairs/month Scaling Path:

  • 10,000 pairs/month: +$50-100/month
  • 50,000 pairs/month: +$200-300/month

No Architecture Changes Needed: Platform scales automatically

Full Technical Details

Complete architecture documentation: /home/alexd/Projects/neuro-pathway-connect/.opencode/rules/memory-bank/architecture.md

Bottom Line for Business

✅ Serverless = Low maintenance cost ✅ Token-based = Better user experience ✅ Automated workflows = Fast scheduling ✅ Managed services = High reliability ✅ Scalable architecture = Supports growth

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