Browse categories
Explore
Fiverr Pro
English
$
USD
I will design your java backend using strict ddd
Anthony Dusart
About this gig
Stop letting frameworks dictate your business logic.
When enterprise applications scale, a tightly coupled codebase becomes a nightmare to maintain. I specialize in engineering Java backends where the core business rules are 100% isolated from the infrastructure, database, and the Spring framework itself.
As a Senior Software Architect, I build robust, production-ready systems using Java 21+, Spring Boot 3, strict Domain-Driven Design (DDD), and Hexagonal Architecture.
What I provide:
- Domain Modeling: Translating your complex business requirements into a clear Ubiquitous Language and defining strict Bounded Contexts.
- Hexagonal Structure: Setting up Inbound/Outbound Ports and Adapters to ensure your core domain remains pure and framework-agnostic.
- State Safety: Enforcing business invariants through strict Aggregate design. I explicitly use static factory methods for domain object instantiation to prevent invalid states.
- Enterprise-Grade Testability: Delivering code that allows instant, 100% pure unit testing of your business logic (JUnit 5/AssertJ), separated entirely from slow Spring Boot Context initialization.
Get to know Anthony Dusart
Anthony Dusart
- FromFrance
- Member sinceJan 2022
Languages
English, French
Is your IT system holding back growth? I transform technical challenges into performance levers. As IT Manager & Architect of a major e-commerce platform, I bring strategic vision beyond simple coding. I design robust, production-ready architectures that serve clear business goals.
Expertise: DDD, Clean/Hexagonal Architecture, SOLID.
Stack: PHP (Symfony), Java (Spring).
Let's build scalable, 100% testable systems.
My Portfolio
Other Software Development Services I Offer
FAQ
What is the difference between your approach and standard Spring Boot?
Standard Spring couples logic to the DB. I isolate a pure Java core using DDD and Hexagonal Architecture. Your business rules remain framework-agnostic, enabling instant unit testing without loading the full Spring Context.
What is a "Bounded Context" ?
In DDD, a Bounded Context encapsulates a specific business boundary (like Billing). Isolating them prevents code entanglement, making the application modular, scalable, and ready for microservices.
Will you build the complete application (Frontend + Backend) ?
No. This Gig is strictly focused on Backend Software Architecture and Core Domain implementation in Java. I do not build frontend interfaces or handle cloud deployment within this service.
Do you document the code with comments ?
I write self-documenting, clean code with strict typing and contract-oriented Javadoc. I intentionally avoid useless inline comments to ensure the codebase remains clean and production-ready.
How do you ensure my domain objects are always valid ?
I enforce strict invariants. Instead of public constructors, I exclusively use Static Factory Methods. This guarantees that every Aggregate or Value Object is instantiated in a valid state.
Can you integrate this into legacy Spring apps ?
Yes. I can extract a specific feature into an isolated Bounded Context using the Strangler Fig pattern. Please message me first to discuss your repository structure and migration path.
