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      Urgent! Java Developer - GraphDB & Semantic Web | European Institutions Job Opening In El Prat de Llobregat – Now Hiring Edda International
 
                        
                         WHO WE ARE 
Edda International, a dynamic and rapidly growing European group of companies with an estimated 2024 turnover of 20+ MEUR, 220+ employees and 15+ years of experience.
Operating out of Luxembourg and Brussels, Edda International manages large International Institutions Framework Contracts delivering Information Technology services throughout geographical Europe.
 WHAT WE ARE LOOKING FOR 
Java Developer – GraphDB & Semantic Web | European Institutions 
We are currently looking for two highly motivated Java Developers to support our client’s projects at a prestigious European Institution in Luxembourg (Kirchberg).
The mission involves working with graph databases and semantic web technologies, driving innovation in data representation, retrieval, and UI integration.
We are hiring for:  
 
1 Junior Developer (1–4 years of experience) – full-time onsite  
 
1 Senior Developer – flexible model: onsite, near-site (within 2h travel) or remote (minimum 20% onsite)   
In these roles, you will contribute to software development activities in the domain of semantic web, data visualization, and search technologies used by one of the most influential institutions in Europe.
 YOUR TASKS  
 
Design and develop scalable Java applications integrated with GraphDB technologies  
 
Write and optimize SPARQL queries  
 
Develop and maintain ETL processes for existing and new tools  
 
Implement new features and extend internal applications built with Java and graph databases  
 
Create and integrate UI filters, data presentation layers, and backend services  
 
Manage different development environments and CI/CD pipelines  
 
Contribute to architectural decisions and evaluate technology options  
 
Optionally, support front-end styling and interaction  
 
Collaborate with institutional stakeholders on product improvements  
 
Support Proof-of-Concept (PoC) creation and adaptive development    YOUR SKILLS AND EXPERIENCE  
 
Strong experience in Java development  
 
Hands-on experience with SPARQL, RDF, and GraphDB technologies (e.g., Ontotext, Blazegraph, etc.)  
 
Familiarity with semantic web concepts such as OWL and SHACL is a strong asset  
 
Proficiency with Elastic Search is a plus  
 
Capable of working independently and proactively  
 
Understanding of front-end/backend data flow  
 
CI/CD and versioning experience (e.g., Git, Jenkins)  
 
Previous experience in EU institutions is a plus  
 
Bonus: project management experience or familiarity with institutional workflows    EXTRA INFORMATION  
 
Contract type: Permanent employment or freelance  
 
Start date: September/October 2025  
 
Location: Luxembourg (Kirchberg)  
 
Work mode:  
 
Junior: On-site, 5 days/week  
 
Senior: On-site or near-site (within 2 hours from Kirchberg) or remote with minimum 20% onsite    
 
Relocation required if beyond 2h travel from Kirchberg for full on-site positions    At Edda International, we are committed to supporting a Diverse and Inclusive Community.
This position is open to EU citizens or non-EU citizens already residing in the EU with a valid work permit, due to the sensitive nature of institutional data.
                      
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Unlock Your Java Developer Potential: Insight & Career Growth Guide
Real-time Java Developer Jobs Trends in El Prat de Llobregat, Spain (Graphical Representation)
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Great news! Edda International is currently hiring and seeking a Java Developer GraphDB & Semantic Web | European Institutions to join their team. Feel free to download the job details.
Wait no longer! Are you also interested in exploring similar jobs? Search now: Java Developer GraphDB & Semantic Web | European Institutions Jobs El Prat de Llobregat.
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