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I will create manipulate ontology, rdf store in java using jena, lib and semantic web
Temmy Dunsin
About this gig
Looking for an expert to design, manipulate, or query RDF knowledge graphs and ontologies using Java and Apache Jena? You are in the right place!
I specialize in Semantic Web technologies, building scalable ontology models, parsing RDF stores, and integrating triplestores directly into Java applications. Whether you need custom SPARQL queries, OWL ontology mappings, or a full Jena-powered backend API, I deliver clean, well-commented code tailored to your exact requirements.
What I Offer:
- Apache Jena Integration: Reading, writing, and manipulating RDF graphs in Java.
- SPARQL Queries: Drafting & optimizing SELECT, CONSTRUCT, ASK, and UPDATE queries.
- Ontology Development: Working with OWL, RDFS, and custom domain ontologies.
- Triplestore Management: Integrating Apache Jena Fuseki with your Java backend.
- Data Formats: Full support for Turtle (.ttl), RDF/XML, N-Triples, and JSON-LD.
- Testing & Setup: JUnit tests to validate Jena inference rules and outputs.
Why Work With Me?
- Clean, well-documented Java code (Maven/Gradle ready)
- Deep understanding of W3C Linked Data standards
- Fast and reliable delivery
Please message me before ordering to discuss your dataset!
Get to know Temmy Dunsin
Temmy Dunsin
Digital Marketing
- FromNigeria
- Member sinceOct 2026
- Avg. response time1 hour
- Last deliveryabout 8 hours
Languages
English
I’m Temmy Dunsin, a professional Digital Marketer helping businesses grow their online presence, reach the right audience, and increase engagement and sales. I specialize in social media marketing, Facebook & Instagram marketing, SEO, content strategy, online advertising, and brand growth. I create tailored strategies based on your goals and target audience. Whether you’re a startup, small business, or established brand, I’m ready to help you grow and succeed online.
FAQ
What file formats do you support for RDF data?
I work with all standard W3C RDF serialization formats, including Turtle (.ttl), RDF/XML (.rdf), N-Triples (.nt), N3, and JSON-LD.
Can you work with Apache Jena Fuseki or remote SPARQL endpoints?
Yes! I can configure Apache Jena Fuseki servers, execute remote SPARQL queries over HTTP endpoints using Jena's SPARQL client tools, and manage triplestore updates.
Will you provide the full Java source code?
Absolutely. All deliverables include complete, well-commented Java source code along with configuration files (Maven or Gradle) and setup instructions.
Can you handle custom OWL reasoning and inference rules?
Yes, I can set up Jena Inference rules, OWL reasoners (Pellet, HermiT, or Jena’s built-in reasoners), and validate ontology logic within your Java app.
What do I need to provide to get started?
Please provide your RDF/OWL datasets or sample data, a clear outline of what you need the Java code to achieve, and any specific SPARQL queries or logic rules required.
