ITproposal

Senior Java Developer - EVIV002460

ITproposal  •  Brussels, BE (Onsite)  •  23 days ago
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Job Description

Senior Java Developer
Brussels & Ghent, Belgium
Start Date: May 2026


We are looking for a Senior Java Developer to design, build, and maintain scalable backend services within a cloud-native environment. You will work on high-impact digital platforms, focusing on secure data handling, performance, and seamless integration across systems.

Key Responsibilities

  • Design, develop, and maintain Java-based backend services using Spring Boot
  • Build scalable microservices and REST APIs for data integration
  • Ensure security, performance, and reliability of applications
  • Apply best practices such as TDD, Domain-Driven Design (DDD), and Agile methodologies
  • Collaborate with architects and development teams to align with overall architecture
  • Contribute to CI/CD pipelines and DevOps practices
  • Lead and mentor developers, supporting team growth and technical excellence
  • Work with relational databases and optimize data access

Requirements

  • Minimum 5 years' experience in Java development (Senior level)
  • Strong experience with Spring Framework (Spring Boot, Spring Data, Spring Security)
  • Experience with microservices architecture
  • Experience with Hibernate, JPA, or SQL
  • Knowledge of CI/CD pipelines and DevOps tools
  • Experience with Agile methodologies
  • Strong coding, testing, and debugging skills
  • Dutch language proficiency at C2 level (mandatory)

Nice to Have

  • Experience with AWS and Docker
  • Knowledge of OAuth2 / OIDC
  • Experience with testing tools (JUnit, AssertJ, JMeter)
  • Familiarity with SOAP, Postman, or Newman
  • Knowledge of mobile application development
  • Experience with Node.js or similar technologies

Additional Details

  • Full-time role (100%)
  • Primarily on-site in Brussels (minimum 2 days/week)
  • Contract until July 2027

If you are a skilled Java developer with a passion for building secure and scalable systems, this role offers an opportunity to contribute to impactful digital solutions at scale.

ITproposal

About ITproposal

As ITproposal we have a very large network of engineers (with our own employees) where we support our Partners all over the world. We combine our experience and knowledge to deliver the best IT solutions. When creating or obtaining projects, we focus on the client and understanding their needs and expectations. We have the competences which allow us to offer a wide range of IT services.

Industry
IT & Software
Company Size
11-50 employees
Headquarters
Amsterdam, NL
Year Founded
2019
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