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# Software Engineer - EKG Semantic Layer & Studio

- **Company:** Número De
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Agile Methodology, Amazon Web Services, Apache HTTP Server, ARM Architecture, HTML5, Cascading Style Sheets (CSS), Clinical Data Repository, Continuous Integration, Data Mapping, Relational Databases, Graph Database, Identity and Access Management, Java Virtual Machine (JVM), Python (Programming Language), Microsoft Data Access Components, OAuth, OpenID, OpenShift, Performance Tuning, Role-Based Access Control, Resource Description Framework (RDF), Cadence Virtuoso, Semantic Web, Software Engineering, SPARQL, TypeScript, Management of Software Versions, Web Applications, Snowflake, Indexer, Backend, Git, Data Layers, Git Flow, Kubernetes, Collibra, Osgi, Semantic Modeling, Terraform, Docker, Jenkins
- **Published:** November 13, 2026
- **Apply:** https://www.adzuna.es/details/5963354200

## About the Role

We are looking for a proactive, hands-on engineer with strong technical ownership, capable of delivering scalable solutions within an international Agile team., * Over 5 years of professional Software Engineering experience, including hands-on Semantic Web and Knowledge Graph development.

 * Strong expertise in RDF, RDFS/OWL, SPARQL, SHACL, and SKOS, including ontology modeling, semantic validation, and graph integration.
 * Hands-on experience with R2RML and/or RML for relational-to-RDF data mapping.
 * Strong fullstack development skills: HTML5, CSS, TypeScript/JavaScript, and Python 3 and/or Java.
 * Experience with RDF graph databases/triplestores (Stardog, GraphDB, AWS Neptune, Virtuoso, or equivalent), including SPARQL optimization.
 * Experience with Git, CI/CD pipelines, Jenkins or equivalent, Docker/Podman, and OpenShift/Kubernetes.
 * Ability to work independently, collaborate with cross-functional Agile teams, and communicate technical decisions effectively.
 * Fluent English, written and spoken.

Nice-to-Have

 * Hands-on experience with metaphactory, including Web Components, Ephedra federation, or Java SPI plugins.
 * Experience with Java/JVM plugins, REST/OSGi extensions, and enterprise authentication (OAuth, OIDC, On-behalf-Of).
 * Knowledge of semantic layers and analytics modeling (Apache Ossie, Snowflake Cortex Analyst, dbt Semantic Layer, LookML).
 * Experience with AWS services and Terraform.
 * Familiarity with Snowflake, Microsoft data platforms, Collibra, or DataHub.
 * Previous experience in the pharmaceutical or Life Sciences industry, including clinical data or medical vocabularies (MedDRA, MeSH).

## Description

* Fullstack Development: Design, develop, and maintain EKG Studio components, UI templates, backend plugins, and workflows using modern web and backend technologies.
 * Semantic Modeling & Integration: Implement R2RML mappings, integrate relational data with RDF knowledge graphs, and support ontology and vocabulary management.
 * CI/CD & Governance: Automate Git-based workflows, semantic validation (SHACL, SPARQL), testing, and deployments across OpenShift environments.
 * Security & Access Management: Implement RBAC, OAuth/On-behalf-Of authentication, versioning, and multi-tenant governance controls.
 * Performance Optimization: Optimize SPARQL queries, graph search, indexing, and UI responsiveness for large-scale knowledge graphs.
 * Technical Ownership: Collaborate with Agile teams, contribute to architectural decisions, and support production releases and documentation.