Application Cloud Architect (Java, Semantic Web Stack) - EU Institution (hybrid in Belgium)
Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Aug 28, 2026. Keyes scores B on the Alion truth index.
Joining KEYES means giving purpose to your talent.
Who are we?
Are you looking for an environment where technology is not an end in itself, but a lever to build a sustainable future? At KEYES, we are not just looking for technical expertise; we are looking for people who share our values. Do you want to continue your career and grow within one of Belgium’s leading IT companies?
KEYES - International Organizations (IO) is a dynamic global organization that takes pride in being the trusted partner of EU Institutions. With strong commitment to excellence and a 30-years track record of delivering high-quality solutions, we are dedicated to supporting the growth and success of our clients. Our Mission is to help our clients keep up with the challenges of digital transformation by providing the right talent at the right time for the right job. To this end, we are constantly looking for talented professionals who are interested in working on challenging international projects and able to deliver high-quality results within multicultural environments. Our services include (but are not limited to) modernization of solutions, digital workspaces, cloud technologies and IT security. Our Headquarters are in Brussels and we have active accounts and offices across Europe (i.e. Luxembourg, Amsterdam, Athens, Stockholm, Geneva).
More information: www.keyes.eu
Is this YOU?
For one of our main clients based in Brussels - a European Institution, we are looking for a Senior Application Cloud Architect with expertise in Semantic web stack, Cloud and Java to support corporate solutions in the area of lifelong learning and improving European’s career path and employment mobility. The project is focused on:
a) Architectural guidance and support.
b) Technical support in analysing compatibility with ESCO.
c) Technical support on integration/interoperability with Eures/Europass.
More specifically, you will be responsible for…
Provide guidance and support related to system architecture and system processes with the interoperability between ESCO and EURES/Europass
Definition of a strategy to gain efficiency in IT operations for the Project
Preparation and maintenance of Architecture design and technical documentation
Coordination and review of current system processes
Participate in workshops and meetings with external stakeholders
Assistance with the evaluation of systems to find out discrepancies and vulnerabilities
Interaction with the business analysts, customer, users, project leaders and the developers
Analysis of the integration of different information systems
Data analysis and data modelling
Coordination of the implementation of the technical architecture
Technical interface between the project leaders and the developers
Production of software architecture documents
Participation in technical working groups, progress meetings and meetings with the users
Assistance during relevant parts of testing, analysis, technical documentation, deployment, evaluation and reporting
Creating designs and blueprints of Cloud Architecture
Review of the architecture of existing systems to migrate of existing system in the cloud
Design and development of architecture components and building blocks using cloud components.
For the needs of the client, you need to be based in Belgium, work on hybrid mode (1-2/week presence in the office) and be able to work as a freelancer (B2B contract).
Requirements
Are you the perfect match?
Bachelor’s/Master’s degree.
10 years of IT experience, preferably in software development with Java.
Experience with Semantic Web Stack: RDF/OWL processing with Apache Jena, SPARQL, triple stores (GraphDB, Apache Fuseki), and semantic reasoning engines.
At least 10 years of experience with Microsoft office tools.
Practical expertise in system vulnerability assessment.
Good knowledge of microservices and architecture in the cloud.
Cloud and Enterprise architecture certification will be a plus.
Knowledge of Enterprise architecture frameworks such as TOGAF and Cobit.
Experience/knowledge of Archimate.
AI and Machine Learning Integration, architecture governance framework and MLOps.
Ability to react to unexpected events efficiently and fast.
Ability to give business and technical presentations.