Production-Ready Microservices Platform - Complete SaaS foundation with user management, payments, CRM, and multi-tenant operations.
Tech Stack: Java 21 + Spring Boot 3.5, React 19 + TypeScript, PostgreSQL, RabbitMQ, Redis
Key Features: JWT authentication, Stripe payments, CRM pipeline, multi-tenant isolation
Deployment: Kubernetes + Helm charts, Docker containers, cloud-agnostic architecture
Links: iqkv.com | github.com/IQKV | Apache License
💼 Business Capabilities
👥 User Management & Authentication
- User registration, login, and email verification
- Role-based access control with tenant isolation
- Password reset and account security
- Organization management and user preferences
💳 Payment Processing & Billing
- Stripe integration with payment intents and webhooks
- Merchant onboarding via Stripe Connect
- Subscription management with plans and invoicing
- Multi-gateway support (Stripe, PayPal, Square, Braintree)
- Automated refund processing and payout tracking
📊 CRM & Lead Management
- Lead capture and pipeline management
- Contact organization and activity tracking
- Follow-up scheduling and conversion analytics
- Dashboard with KPIs and performance metrics
⚙️ Platform Infrastructure
- API gateway with rate limiting and circuit breakers
- Multi-tenant data isolation (schema-per-tenant)
- JWT-based authentication across all services
- Reactive programming for high-throughput scenarios
🏗️ Architecture & Implementation
Backend Services: User Service (authentication), Gateway Service (routing), Billing Service (payments), CRM Services (leads, contacts, pipeline)
Frontend Applications: React portal with authentication, billing management, CRM dashboard, and admin panels
Infrastructure: PostgreSQL databases, Redis caching, Docker containers, Kubernetes deployment
Technical Stack:
- Backend: Java 21, Spring Boot 3.5, Spring Cloud Gateway, PostgreSQL, Redis, RabbitMQ
- Frontend: React 19, TypeScript, Vite, Mantine UI, TanStack Router/Query
- Security: JWT with RSA256, OAuth2 Resource Server, role-based access control
- Operations: Docker containers, Kubernetes manifests, OpenTelemetry observability
- Testing: JUnit 5, Testcontainers, Playwright, comprehensive test coverage
📁 Repository Structure & Standards
Repository Organization:
- Platform Services: Complete microservices with authentication, billing, CRM, and gateway
- Frontend Applications: React portals for user management, billing, and CRM operations
- Development Tools: Docker Compose setup, CI/CD pipelines, code quality tools
- Documentation: Architecture guides, API documentation, deployment instructions
Development Standards:
- Language: Java/Kotlin with Spring Boot, TypeScript with React
- Architecture: Domain-driven design, clean architecture, microservices patterns
- Quality: SonarQube, PMD, CheckStyle, SpotBugs code analysis
- Testing: Unit tests, integration tests, end-to-end tests, architecture validation
- CI/CD: Automated builds, testing, security checks, and deployment pipelines
