Production-ready SaaS Starter Kit: Spring Boot 3.4 & Angular 21 (Full Setup)

A production-ready SaaS baseline for Java devs to save up to 200h

Backend: The Fortress

• Language: Java 21 LTS (Records, Pattern Matching)
• Framework: Spring Boot 3.4.1
• Security: Spring Security 6 + Stateless JWT (RBAC: User, Admin, CEO)
• Database: MSSQL 2022 (Dockerized)
• ORM: Hibernate / Spring Data JPA
• Migrations: Flyway (Schema version control)
• Payments: Stripe Java SDK (Webhook signature verification)
• Testing: JUnit 5 & Mockito

Frontend: Modern & Fast

• Framework: Angular 21
• Architecture: Standalone Components (No NgModules), Signals, Typed Forms
• UI Library: Angular Material 21
• State/Async: RxJS
• Security: HttpInterceptors (Token injection) & Auth Guards

Infrastructure

• Containerization: Docker & Docker Compose
• Orchestration: Single command setup (DB + Backend + Frontend/Nginx)

This kit is designed to let you skip the setup and jump straight to writing business logic on Day 1.

The full source code is a paid product (to support development), but I have open-sourced the Architecture Documentation in the README.

Check it out here:
https://github.com/zukovlabs/enterprise-java-saas-starter-kit

I’d love to hear your feedback on the tech stack choices!