Senior Backend Engineer: Semantic Graphs & MCP Server

NextLink Group; Sant Cugat del Vallès; On-site; EUR 75,000 - 105,000; Full time

Job summary

NextLink Group in Spain is seeking a Senior Software Engineer to advance an Enterprise Knowledge Graph platform. You will develop the MCP Server, build backend services with Python and FastAPI, and optimize graph data workflows for scalable, AI-enabled analytics.

The role requires 5+ years in backend engineering, experience with RDF/SPARQL and cloud deployments on OpenShift/Kubernetes. Hybrid collaboration with pharma clients is expected.

Qualifications

• 5+ years of experience in backend software engineering.
• Strong expertise in Python 3, FastAPI, Pydantic, and REST APIs.
• Hands-on experience with RDF, SPARQL, and graph data modeling.
• Experience with Docker, Kubernetes/OpenShift, and CI/CD pipelines.
• Solid knowledge of SQL, Snowflake (or equivalent), and cloud platforms.
• Familiarity with OAuth 2.0, RBAC, Terraform, and API performance optimization.

Responsibilities

• Develop, scale, and maintain the EKG Semantic Layer's MCP Server.
• Build robust backend services using Python, FastAPI, and Pydantic.
• Optimize SPARQL queries, graph traversals, caching, and API performance.
• Develop semantic models using RDF, OWL, SKOS, SHACL, and R2RML.
• Integrate semantic services with Snowflake, graph databases, and AI agents.
• Manage deployments, testing, and CI/CD pipelines on OpenShift/Kubernetes.
• Implement API security, monitoring, and observability.

Skills

Python 3

FastAPI

Pydantic

REST APIs

RDF

SPARQL

Graph data modeling

CI/CD pipelines

Docker

Kubernetes/OpenShift

SQL

Snowflake

Tools

Docker

Kubernetes/OpenShift

CI/CD pipelines

Snowflake

Job description

NextLink Group in Spain is seeking a Senior Software Engineer to advance an Enterprise Knowledge Graph platform. You will develop the MCP Server, build backend services with Python and FastAPI, and optimize graph data workflows for scalable, AI-enabled analytics.

The role requires 5+ years in backend engineering, experience with RDF/SPARQL and cloud deployments on OpenShift/Kubernetes. Hybrid collaboration with pharma clients is expected.