Knowledge Graph Architect for AI Solutions

Siemens; City Of London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Mendix, a Siemens business, powers hybrid agentic workforces by enabling organizations to build, scale and orchestrate agents and applications faster by combining low-code, AI, data, and integrations into a unified platform. The Solutions Engineer (Data & Graph) will design knowledge graphs and own the data and graph architecture workstream, turning validated customer work into reusable patterns.

This role supports GTM and delivery with proven technical narratives across customer engagements and

Qualifications

• Demonstrable hands-on experience designing and building knowledge graphs and ontologies.
• Strong understanding of graph data modelling, semantic modelling, and ontology design.
• Experience with graph database platforms and query languages (e.g. SPARQL, Cypher, or equivalent).
• Data engineering fundamentals: pipelines, data preparation, and integration with enterprise systems (ERP, CRM, operational systems).
• Ability to translate data and graph architectures into reusable patterns and clear technical narratives.
• Strong communication and collaboration skills across Product, GTM, engineering, and customer stakeholders.

Responsibilities

• Design and build knowledge graphs and ontologies that underpin Mendix's AI solutions, technical demos, and customer implementations.
• Own the data and graph architecture workstream within integrated team solutions, working alongside Solutions Engineers who cover the application and AI layers.
• Turn validated customer work into reusable assets: reference architectures, blueprints, accelerators, and repeatable patterns.
• Contribute to customer engagements, events, and analyst briefings as the team's expert in data and graph.
• Ground GTM positioning and storytelling in validated technical proof points, supporting high-impact moments like executive demos and analyst briefings.

Skills

Knowledge graphs

Graph data modelling

Semantic modelling

Clear technical narratives

Communication & collaboration

Tools

SPARQL

Cypher

Job description

Mendix, a Siemens business, powers hybrid agentic workforces by enabling organizations to build, scale and orchestrate agents and applications faster by combining low-code, AI, data, and integrations into a unified platform. The Solutions Engineer (Data & Graph) will design knowledge graphs and own the data and graph architecture workstream, turning validated customer work into reusable patterns.

This role supports GTM and delivery with proven technical narratives across customer engagements and