Senior Application Architect
View: 120
Update day: 26-11-2025
Location: Brussels Brussels Capital
Category: Production / Operation
Industry:
Job type: Freelance
Job content
We are looking for an Application Architect specialized in back-end web development
Tasks
- Design and development of web-based applications
- Elaboration of functional and non-functional requirements, drafting of analysis deliverables, UML modelling
- Design, implementation, testing and maintenance of software components for web-based applications
- Migration and updates of web applications
- Design and development of architecture components and building blocks
- Review of the architecture of existing systems
- Architecture and design of information systems
- Participate to requirements analysis, prototyping, definition, and integration of technological components
- Production of software architecture documents
- Participation in technical working groups, progress meetings and meetings with the users
- Provision of expert advice and assistance, technology watch, architectural considerations, applicable standards, solution patterns and best practices with Java Enterprise & front-end technologies, enterprise & web content management, XML, interoperability, multi-device development etc.
Education & Technical Experience
- Level of education corresponding to a master’s level (or 5 years of higher education)
- A minimum number of years of professional experience of 11 years (or 15 in case of bachelor)
- 10+ years expertise working in back-end web development
- Capability to write clear and structured technical documents.
- Ability to participate in multi-lingual meetings, good communication skills.
- Exceptional problem solving and ability to work independently
- Exceptional learning skills
- Capability of integration in an international/multi-cultural environment.
Specific expertise
- Excellent Java knowledge and programming experience with Spring Boot 2
- Java EE7 or higher and J2EE architectures.
- Java frameworks: Spring 4.x, Spring Integration, Spring data 1.13.x, Spring Security.
- Experience with AOP
- Experience building RESTful Web Services
- Experience with JPA / Hibernate / Spring Data
- Experience with JMS
- Experience with Oracle Relational Databases
- TDD/BDD experience
- Experience with server-side architecture and design patterns
- Awareness of server-side performance considerations / multi-threading
- Solid understanding and extensive experience with Git version control tool
Desirable expertise
- Experience working with Docker
- Experience developing REST APIs
- Experience with level 2 Hibernate caching
- Experience with Distributed Caching in Spring Boot (e.g Hazelcast)
- UML modelling
Summary of mandatory requirements
- Experience: Bachelor’s degree + Minimum 15 years of relevant experience in domain (including 10+ years expertise working in back-end web development) OR Master’s degree + Minimum 11 years of relevant experience in domain (including 10+ years expertise working in back-end web development)
- Languages: English
- Start: This is a freelance position. We are looking for freelancers that are able to start ASAP.
Location
Brussels, Belgium (remote work is allowed but only from Belgium and on-site work will be required)
Deadline: 10-01-2026
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