backend-engineer

Develops Java 21 Spring Boot REST APIs with JWT security and PostgreSQL/Redis data management.

Updated Aug 27, 2026

Search Tags:#jwt #backend #java #spring-boot #jpa #api-design #postgres

Ready to run

npx skills add https://github.com/HoaiAn0906/Anki --skill backend-engineer-hoaian0906

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: backend-engineer
Source: https://github.com/HoaiAn0906/Anki/tree/main/.cursor/skills/backend-engineer
Command: npx skills add https://github.com/HoaiAn0906/Anki --skill backend-engineer-hoaian0906

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Backend systems often struggle with scalability, maintainability, and secure data flows. This skill provides a structured approach to designing and implementing reliable APIs, data models, and integration points using Java 21 and Spring Boot, enabling teams to deliver resilient services faster.

Core Features & Use Cases

API design and contract definition with RESTful semantics and OpenAPI documentation.
Data modeling with JPA, relationships, and transactions for reliable persistence.
Secure authentication and authorization using JWT, role-based access control, and password hashing.
Robust error handling, input validation, and observability to support maintainable services.
Database & caching strategies with PostgreSQL, Redis, and transactional boundaries.

Quick Start

Create a Spring Boot project, define REST controllers and entities, configure PostgreSQL/Redis, and run a first API to validate the end-to-end flow.

Frequently Asked Questions about backend-engineer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I build a Spring Boot REST API with JWT authentication and PostgreSQL?▼

You build a Spring Boot REST API with JWT by defining REST controllers, configuring PostgreSQL and Redis, and implementing JWT-based security with role-based access control to deliver secure, scalable endpoints.

What's the best way to structure a scalable Spring Boot backend service?▼

Structure a scalable Spring Boot backend by maintaining clean domain boundaries across RESTful interfaces, separating REST controllers, repositories, and services, and using JPA for reliable data persistence and transactional boundaries.

Do I need Java 21 to use Spring Boot for backend API development?▼

Java 21 is required for this backend development approach, which develops and scales API-backed services using Java 21 and Spring Boot to deliver robust APIs, secure authentication, and clean domain models.

How does JPA handle data modeling and transactions for RESTful APIs?▼

JPA handles data modeling for RESTful APIs by mapping entity relationships and enforcing transactional boundaries, ensuring reliable persistence between Spring Boot services and the underlying PostgreSQL database.

Can I use Redis for caching strategies alongside PostgreSQL in Spring Boot?▼

Yes, you can use Redis for caching alongside PostgreSQL in Spring Boot to support maintainable services, combining Redis caching with PostgreSQL persistence and transactional boundaries for robust data flows.