backend-engineer

Name: backend-engineer
Availability: InStock
Author: Violet

Build and maintain server-side APIs with Java 21 and Spring Boot.

Updated Aug 27, 2026

Search Tags:#backend #java #kafka #spring #temporal #liquibase #jax-rs

Ready to run

npx skills add https://github.com/violetio/violet-ai-plugins --skill backend-engineer-violetio

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: backend-engineer
Source: https://github.com/violetio/violet-ai-plugins/tree/main/plugins/v-backend/skills/backend-engineer
Command: npx skills add https://github.com/violetio/violet-ai-plugins --skill backend-engineer-violetio

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Defines and implements server-side APIs, service layers, and data access layers with industry-standard practices, facilitating reliable, scalable backends.

Core Features & Use Cases

Tech Stack: Java 21, Spring Boot 3.2.1, JAX-RS REST APIs, MySQL with Spring Data JPA, Liquibase migrations, Kafka, Temporal
Patterns: Common API patterns, error handling, observability, and testing
Full-stack integration: coordinate between service, repository, and API layers

Quick Start

Set up a new service following existing patterns, implement JAX-RS resources, connect to MySQL, run Liquibase migrations, and add unit tests

Frequently Asked Questions about backend-engineer

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

FAQPage Schema

How do I build REST APIs with Spring Boot and JAX-RS?▼

Spring Boot 3.2.1 with JAX-RS resources provides a structured way to build REST APIs. Define resource classes annotated with JAX-RS decorators, connect them to service layers, and Spring Boot handles routing, dependency injection, and HTTP mapping automatically.

How do I set up database migrations with Liquibase in a Java application?▼

Liquibase migrations track and apply schema changes to MySQL databases in a version-controlled way. Define changesets in XML or SQL, place them in your Spring Boot classpath, and Liquibase applies them on startup, ensuring consistent deployments across environments.

Can I use Kafka for event-driven messaging in a Spring Boot backend?▼

Yes. Kafka integrates with Spring Boot for publishing and consuming messages across services. Configure topics, set up producer and consumer beans, and coordinate event flow between API layers, service logic, and downstream systems reliably.

What's the best way to structure data access with Spring Data JPA and MySQL?▼

Spring Data JPA repositories abstract MySQL queries and transactions, reducing boilerplate. Define entity classes, extend repository interfaces, and leverage JPA to handle ORM, lazy loading, and connection pooling while keeping the data layer decoupled from business logic.

How do I handle errors and logging in production backend services?▼

Implement consistent error handling with exceptions caught at API boundaries, log contextual details at each layer, and emit observability metrics. This surfaces failures to monitoring systems, aids debugging, and meets QA readiness and reviewer feedback standards.

Do I need Temporal for orchestrating long-running backend workflows?▼

Temporal handles durable, resumable workflows with automatic retry and state persistence. Use it when your backend must coordinate multi-step processes across services—payment flows, order fulfillment, batch jobs—ensuring reliability without polling or manual state management.