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# Expert Java Backend Developer

- **Company:** Optimusitservices
- **Location:** Brussel, Belgium (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Adobe InDesign, Agile Methodology, Software Quality, Continuous Integration, Relational Databases, Software Debugging, Spring Framework, Cisco Nexus Switches, Oracle (Applications), Scrum Methodology, Fortify (Software), Simple Object Access Protocol (SOAP), SonarQube, Enterprise Application Integration, Test-Driven Development (TDD), Backend, Gitlab, Git, Apache Kafka, Restful APIs, Domain Driven Design, Code Restructuring, Jenkins, Microservices
- **Published:** October 27, 2026
- **Apply:** https://www.optimusitservices.be/jobs/expert-java-backend-developer/

## About the Role

* 6+ years of experience in Java development, with deep expertise in enterprise-level backend systems
 * Proficient in Spring/Spring Boot, object-oriented programming, and software design patterns
 * Experience with relational databases (Oracle), Kafka, and enterprise integration patterns (e.g., service buses)
 * Strong knowledge of SOAP and RESTful APIs
 * Hands-on experience with testing frameworks, CI/CD pipelines, and tools such as:
 + Git, GitLab, Jenkins, SonarQube, Fortify, Nexus
 * Familiarity with Domain-Driven Design, Hexagonal Architecture, and microservices architecture
 * Knowledge of TDD, code refactoring, and clean code principles
 * Excellent problem-solving, debugging, and communication skills
 * Fluent in English (written and spoken)

## Description

We are looking for an Expert Java Backend Developer to join a high-performing technical squad focused on building scalable, secure, and maintainable solutions for complex loan contracting systems. This is a senior-level role where you'll contribute significantly to the future architecture of critical backend services and work with modern enterprise technologies., * Design, develop, and maintain robust and scalable Java backend applications using Spring Framework and related technologies

 * Lead initiatives to reduce technical debt, refactor legacy code, and define future application evolution
 * Collaborate with architects, developers, and product owners to ensure technical excellence and delivery of customer value
 * Analyze, refine, and implement business requirements into clean, efficient, and testable code
 * Ensure code quality through best practices in design, TDD (Test-Driven Development), CI/CD, and automation
 * Support the team in overcoming technical challenges and elevating engineering standards
 * Contribute to the adoption of Domain-Driven Design, hexagonal architecture, and modern DevOps tooling, To be a pioneering IT services provider, shaping the future with innovation, excellence, and customer-centricity for global growth and positive impact.

Facilities for Client

 + Dedicated Manager
 + Monthly Report
 + Responsible co-ordination
 + On-time work

Facilities for Candidates

 + Job Placement Assistance
 + Visa Sponsorship
 + Relocation Support
 + Travel Arrangements
 + Support and Follow-up