Knowledge Graph & AI Integration Engineer

Reply, Inc.; Manchester; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Reply is hiring a specialist to design and build semantic layers that give organisations a shared, machine-readable understanding of their data. You will create ontologies and knowledge graphs across industries, from discovery to production, supporting integration, governance, analytics and AI initiatives.

You will apply semantic technologies, connect data across systems, and expose graph data via APIs for downstream usage, while ensuring grounded, trustworthy insights for analytics and

Qualifications

• Degree in Computer Science or related field, or equivalent hands-on experience.
• Proven track record delivering semantic layers and knowledge graphs into production environments.
• Strong understanding of RDF/OWL, SPARQL, Cypher and graph databases.

Responsibilities

• Facilitate discovery workshops with business and technical stakeholders to understand and model key domains.
• Design, build, and maintain scalable ontologies, taxonomies, and semantic models that reflect complex business concepts.
• Develop and operate knowledge graphs end-to-end, including data ingestion, mapping, and entity resolution pipelines.
• Connect and standardise data across disparate systems using semantic technologies to improve integration and data consistency.
• Create, optimise, and maintain graph queries, exposing graph data via APIs and services for downstream consumers.
• Integrate knowledge graphs with AI solutions to deliver grounded, trustworthy insights for analytics and generative AI use cases.
• Prototype and productionise AI-powered features, including prompt engineering, evaluation, and continuous improvement.
• Advise customers on semantic architecture, governance, and best practices, contributing reusable standards and frameworks.

Skills

Semantic web

Knowledge graphs

Graph databases

Python

Data modelling

AI & LLMs

Education

Bachelor's degree in Computer Science or related field

Tools

Neo4j

GraphDB

Cypher

SPARQL

LangChain

Job description

Reply is hiring a specialist to design and build semantic layers that give organisations a shared, machine-readable understanding of their data. You will create ontologies and knowledge graphs across industries, from discovery to production, supporting integration, governance, analytics and AI initiatives.

You will apply semantic technologies, connect data across systems, and expose graph data via APIs for downstream usage, while ensuring grounded, trustworthy insights for analytics and