Auto-configuration
Starters and auto-configuration provide a consistent foundation for web, data or security; every setting can still be overridden per environment profile.
Expertise · Spring Boot
Spring Boot Development: Production-Ready Java Services
Etixio builds your Spring Boot applications: Java services integrated into your information system, APIs, batch processing and microservices, with explicit configuration and responsibilities. We build, take over and release to production, including the AI features added to your applications.
Understanding the technology
Spring Boot in your project.
Spring Boot makes it easier to build and configure Java applications in the Spring ecosystem. It provides a foundation for web services and business applications, to be completed with an explicit architecture and rules. Etixio works on the components, the integrations and getting ready for operations.
The strengths for your product
Why choose Spring Boot?
Spring Boot has become the most common starting point for enterprise Java applications. It reduces initial configuration without locking the team into hidden choices, and relies on an ecosystem that covers most of the needs of business software.
Built for operations
Spring Boot Actuator exposes the application’s health, metrics and information, which simplifies monitoring and post-deployment checks.
A complete ecosystem
Spring Data, Spring Security, Spring Batch and Spring Integration address the common needs of an enterprise application with modules maintained together.
Modern Java
Spring Boot 3.x and 4.x require Java 17 at minimum; for a new project, we use Java 21 or 25 (LTS) and virtual threads for high-concurrency services.
Microservices when justified
Spring Cloud provides centralized configuration, service discovery, a gateway and resilience (Resilience4j), with distributed tracing via Micrometer.
Our scope of work
The work we take on.
Services
Structure components, configurations and their dependencies.
Integrations
Connect APIs, data and asynchronous processing to existing applications.
Production
Prepare tests, metrics, logs and health checks.
Our Spring Boot expertise
The Spring Boot ecosystem we master.
Core & operations
Spring Boot 3.x and 4.x (Spring Framework 7, Jakarta EE 11), upgrades from 3 to 4, starters, auto-configuration and conditional beans, Actuator for health, metrics and management endpoints.
Web & APIs
Spring Web MVC for REST APIs (validation, error handling), Spring WebFlux and Project Reactor for non-blocking services, Spring HATEOAS when the API requires it.
Data & persistence
Spring Data JPA with Hibernate, Spring Data MongoDB, Spring JDBC for direct access, Flyway or Liquibase migrations.
Security & integration
Spring Security (OAuth2, JWT, role-based and method-level authorization, LDAP directories), Spring Integration for flows between systems, Spring Batch for batch processing.
Spring Boot is part of our broader custom Java development practice, from container deployment to monitoring.
Spring Boot and AI
Adding AI features to a Spring Boot application.
Search across your documents, information extraction, an assistant built into a business screen: these features are added to a Spring Boot application like any other service. Spring AI provides an abstraction for calling the main models and querying a vector database without leaving the Spring ecosystem. We add what makes the service production-ready: data access control, logging, evaluation sets, error handling and cost tracking.
For broader use cases, see our AI solutions for businesses and our AI agents and chatbots.
In the field
From technology to real-world use.
For a contract management service, we organize the APIs, validations and persistence. Long-running operations and partner exchanges are handled along with their errors and retries. Tests isolate the important rules, then verify transactions and calls to the systems actually in use.
The choices that matter
The choices to review before building.
Automatic conventions do not remove the need to understand the configuration and the dependencies that are enabled. We review environment profiles, access and monitoring points. Splitting into several services is decided based on responsibilities and deployment needs, not as an inevitable consequence of the framework.
From work to deliverables
Work your team can take over.
The scope of the engagement specifies the components to build or rework and the acceptance criteria. We prepare what is needed to understand the changes, verify them and continue the work.
- Services and API contracts
- Business rule tests
- Deployment procedures
Frequently asked questions
Spring Boot: your questions.
What is Spring Boot and why is it so widely used?
Spring Boot is a Java framework that simplifies building Spring applications through auto-configuration, starters and an embedded web server. It combines a fast start, the Spring ecosystem and built-in operational features.
Is Spring Boot suitable for enterprise applications?
Yes. It is now one of the standards for enterprise Java applications, used for APIs, microservices, batch processing and business applications with strict security and availability requirements.
What is the difference between Spring Boot, Quarkus and Micronaut?
Spring Boot offers the most complete and widely used ecosystem. Quarkus and Micronaut primarily target fast startup and low memory usage for cloud services. Spring Boot is often still the best choice for an existing application, a team already trained in Spring or a need for varied integrations.
Is Spring Boot a good fit for microservices?
Yes, with Spring Cloud (centralized configuration, service discovery, gateway, resilience) and distributed tracing. However, we only split into microservices when responsibilities and deployment needs justify it.
Which databases should you use with Spring Boot?
PostgreSQL, MySQL or Oracle via Spring Data JPA, MongoDB via Spring Data MongoDB, Redis for caching, with versioned migrations using Flyway or Liquibase and a configured connection pool.
How do you secure a Spring Boot application?
Spring Security handles authentication (OAuth2, JWT, LDAP or Active Directory), role-based and method-level authorization, CSRF protection and password hashing. We add regular dependency updates and tests on access rules.
How do you test a Spring Boot application?
Unit tests for business rules, targeted tests with @WebMvcTest or @DataJpaTest, integration tests with @SpringBootTest and Testcontainers to work against real databases, run on every change in continuous integration.
Can you add AI to an existing Spring Boot application?
Yes. Spring AI or direct calls to model APIs make it possible to add document search, extraction or an assistant, with the same security and monitoring rules as the rest of the application. We also take over AI POCs and see them through to production.
What engagement models do you offer?
A fixed-price project for a defined scope, a dedicated team to evolve your application over time, or a targeted engagement: security, JVM performance, migration of a legacy Spring application.
Let’s talk about your technical context.
Tell us about the application, the issue to address and the known constraints. We will review the dependencies and the initial scope of work with your team.