Senior Java Developer - Technical Lead (m/f/d)

Halian | Managed Services, Recruitment Agency & Contract Staffing; Brussel; Presencial; EUR 85 000 - 115 000; Tempo integral

Resumo da oferta

Halian Group in Brussels, Belgium, seeks a Senior Java Analyst Developer / Technical Lead to join its IT team. The role blends hands-on Java development with architectural leadership, maintenance and collaboration with business stakeholders.

You will design and oversee backend architecture, lead technical decisions, coach developers, translate requirements into technical solutions, and drive release management, testing, and ongoing process improvements.

Qualificações

• Degree in IT or equivalent professional experience.
• At least 5 years of hands-on Java development experience.
• Strong knowledge of Java 7/8/11/17, Spring, JEE, RESTful Web Services, SOAP, concurrency and multithreading.
• Experience with Maven, Jenkins, Git, Bitbucket, Jira, GlassFish/WildFly, and SQL Server.
• Knowledge of Docker, Kubernetes, ReactJS, Linux/Unix and cloud platforms (AWS/Azure/GCP) is a plus.
• Excellent communication, collaboration, and ownership; fluent English and Dutch or French.

Responsabilidades

• Design and oversee the technical architecture of Java applications while developing robust, scalable backend solutions.
• Lead technical decision-making, code reviews, and ensure high standards of code quality.
• Coach and mentor Java developers, partnering with Product Owners and business users.
• Translate business requirements into technical solutions and deliver new apps within scope and planning.
• Maintain and improve existing applications by addressing bugs and performing root-cause analysis.
• Support release management, testing, documentation, and continuous improvement of development processes and security.

Conhecimentos

Java development

Back-end architecture

Team leadership

Agile/Scrum

Fluent English

Dutch or French

Formação académica

Degree in IT or related field

Ferramentas

Maven

Jenkins

Git

Bitbucket

Jira

GlassFish

WildFly

SQL Server

Docker

Kubernetes

ReactJS

ActiveMQ/OpenMQ

Descrição da oferta de emprego

A well-established organization operating in a regulated environment is seeking a Senior Java Analyst Developer / Technical Lead to join its IT team. The role combines hands-on Java development with technical leadership, application architecture, maintenance, and collaboration with business stakeholders. The successful candidate will take ownership of technical decisions while supporting and mentoring other developers and contributing to the continuous improvement of applications, processes, and technologies.

Responsibilities:

• Design and oversee the technical architecture of Java applications while developing robust, scalable backend solutions.
• Lead technical decision-making, conduct code reviews, resolve complex technical challenges, and ensure high standards of code quality.
• Coach and mentor Java developers, share technical knowledge, and collaborate closely with Product Owners, business users, and other stakeholders.
• Translate business requirements and functional specifications into technical solutions, delivering new applications and enhancements within agreed scope and planning.
• Maintain and improve existing applications by handling technical requests, resolving bugs, performing root-cause analysis, and implementing sustainable improvements.
• Contribute to release management, testing, technical and user documentation, application support, and the continuous improvement of development processes, tools, security, and technologies.

Qualifications and Skills:

• Degree in IT or equivalent professional experience, with at least 5 years of relevant experience for a senior-level profile and strong hands‑on Java development expertise.
• Strong knowledge of Java 7/8/11/17, Spring, JEE, RESTful Web Services, SOAP, concurrency and multithreading, with experience designing and integrating backend applications and APIs.
• Experience with development and delivery tools including Maven, Jenkins, Git, Bitbucket, Jira, application servers such as GlassFish and WildFly, and databases such as Microsoft SQL Server.
• Knowledge of modern development environments and technologies such as Docker, Docker Compose, Kubernetes, ReactJS, ActiveMQ/OpenMQ, Linux/Unix, and cloud platforms such as AWS, Azure, or GCP is an advantage.
• Strong understanding of secure development practices, including OWASP Top Ten, OAuth, JWT, SAML, encryption, API security, Spring Security, dependency management, and standards such as GDPR and PCI‑DSS.
• Strong communication, collaboration, and ownership skills, with experience working in Agile/Scrum environments and interacting with both technical teams and business users; fluent English plus Dutch or French is required.

Halian Group:

With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers.

Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together.

At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve.

Senior Java Developer - Technical Lead in Brussels, Belgium