System Architecture
A distributed, serverless decomposition of the VersionCV ecosystem. Detailed service roles and infrastructure components are mapped directly within each block.
Client & Delivery
Web Delivery
Global delivery of the VersionCV web application.
"Static assets and UI are served from the edge to minimize latency and reduce backend load."
- •Cloudflare CDN / Proxy
- •Vercel Hosting
- •HTTPS Termination
- •Static Asset Delivery
Authentication & Security
Identity & Access
Authentication, authorization, and session control.
"Identity is validated at the edge to prevent unauthorized requests from reaching business logic."
- •Firebase OAuth
- •JWT Validation
- •Session Management
Request Protection
Abuse prevention and request sanitization.
"Early rejection of malicious traffic keeps the system cheap, safe, and predictable."
- •Cloudflare WAF
- •DDoS Protection
- •Rate Limiting
- •CSP & XSS Protection
Core Backend
Business Logic (Proprietary)
VersionCV’s core resume optimization intelligence.
"This layer encodes domain knowledge and deterministic rules that differentiate VersionCV."
- •Resume Ingestion & Normalization
- •ATS Scanner & Scoring Engine
- •JD Matching Engine
- •AI Optimization Orchestration
- •Plausible Skills Finder
Supporting Services
Shared platform capabilities.
"Cross-cutting services are isolated so business logic remains focused and maintainable."
- •Notifications
- •Analytics
- •Custom Error Logging
- •Tracing & Debugging
Async Processing
Background Jobs & Queues
Non-blocking and long-running tasks.
"Heavy work runs asynchronously to keep user interactions fast and operational costs low."
- •Producer / Consumer Queues
- •Job Aggregator
- •Retry & Backoff
- •Batch Workers
Data & State
Persistent Storage
Durable system state and metadata.
"Storage is optimized for cost and access patterns rather than over-engineering."
- •Cloudflare D1 (SQLite)
- •KV Cache
- •R2 Object Storage
- •Logs & Metrics Storage