Senior Java Developer

Company Description

ATCON GLOBAL is a Belgium-based IT consulting firm dedicated to empowering businesses with advanced technology solutions. We specialize in digital transformation, enterprise performance improvement, business intelligence, and data analytics. With a client-focused, results-driven ethos, our team delivers tailored IT solutions addressing business challenges. Alongside a strong local presence in Belgium, we leverage a global talent network from the UK and India to ensure exceptional service. Our mission is to deliver measurable results, not just hours, ensuring our clients’ objectives are met with excellence.

About the Role

As a Senior Java Developer, you will actively participate in Scrum team dynamics, implementing pre-analyzed developments and executing unit tests from the start of each user story. You will work in close collaboration with functional analysts and testers, ensuring anticipation, technical accuracy, quality focus, organizational flexibility, and strong inter-team communication.

As a senior consultant, you will also mentor junior colleagues and facilitate knowledge transfer within the team.

You will contribute to a strategic transformation project in which a monolithic application — including externally developed modules — is being rewritten into a microservices-based architecture. The application operates in a banking-like environment (payments, bills, refunds) and includes accounting functionalities.

You will be assigned to one of the priority domains:

• Accounting management
• Transaction & order management
• Rules management
• Interface management

An internal Lead Developer oversees transversal coordination of developments, while lead testers provide integration testing guidelines. The organization also benefits from a dedicated QA&C team and a broader developer network.

Responsibilities

• Actively participate in Agile Scrum ceremonies and team dynamics
• Collaborate with functional analysts and testers from the beginning of each user story
• Implement analyzed and validated developments
• Develop and execute unit tests
• Contribute to integration testing in coordination with lead testers
• Ensure technical accuracy, high-quality deliverables, and adherence to QA guidelines
• Support the transformation from monolithic architecture to microservices
• Coordinate with the internal Lead Developer for transversal development alignment
• Follow QA&C guidelines and best practices
• Communicate effectively across teams and stakeholders
• Mentor and transfer knowledge to junior developers

Technical Skills (Mandatory)

Minimum 10+ years of experience as a Java Developer with strong expertise in:

• Java, REST APIs (BELGIF), asynchronous messaging (command/reply & event-driven architecture)
• Source code management (Git), DB2 & SQL
• Spring Boot, Angular
• DevOps tools (Kubernetes, ArgoCD, Vault, GitLab)
• Agile Scrum methodology, Windows & Linux environments
• UML, JSON & XML formats

Technical Skills (Useful)

Experience with the below technologies/tools is a plus:

• WebLogic, ELK stack
• Atlassian Suite (Jira, Confluence)
• Development tools: IntelliJ, Visual Studio Code, Eclipse, NetBeans
• GitHub, Fisheye, ActiveMQ, Cucumber

Other Professional Skills

• Fluency in Dutch or French, along with proficiency in English.
• Proactive, quality-oriented mindset with a positive attitude
• Ability to advise partners, contribute to group reflection, and communicate effectively
• Strong knowledge-sharing and mentoring capability