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Graph Engineer/Data Ontology Specialist

Graph Engineer/Data Ontology Specialist

On site

United kingdom

Freelance

01-10-2025

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Skills

Quality Assurance Databases AWS NLP

Job Specifications

Amass Technology's client is looking for an AI/ML Specialist on a contract basis to start ASAP.
See details below:
All applicants must be UK based.
Key Responsibilities
Design, optimise, and query graph databases (particularly Amazon Neptune).
Develop and manage ontologies and robust knowledge representation frameworks.
Integrate LLMs (Claude 3.7 or above, GPT, etc.) for content analysis, entity extraction, and semantic enrichment.
Implement Retrieval Augmented Generation (RAG) and LLM-based fact extraction ([Subject, Verb, Object] triples).
Build LLM-assisted QA pipelines for relationship validation and data consistency.
Fine-tune and customise models for domain-specific applications.
Apply graph algorithms, graph neural networks, and reasoning within Neptune and knowledge graph environments.
Develop vector-based similarity search using embeddings and similarity algorithms.
Apply traditional NLP methods (NER, POS tagging, syntactic parsing) alongside LLMs.
Use clustering, classification, anomaly detection, and time-series analysis for content analysis and quality assurance.
Deploy and scale ML models in production environments using AWS AI/ML services (eg, SageMaker).
Build and optimise ETL pipelines and data workflows for large, complex datasets.
Work with RDF, SPARQL, and semantic web technologies for structured data management.
Required Skills & Expertise
Graph engineering with Amazon Neptune and knowledge graph frameworks.
Ontology engineering and semantic data modelling.
LLM integration, fine-tuning, and RAG pipeline implementation.
Advanced NLP and information retrieval methods.
Experience with graph-based AI techniques (algorithms, GNNs, reasoning).
Strong MLOps skills in performance evaluation and pipeline automation.
Proficiency in AWS ML ecosystem (SageMaker, AI/ML services).
Experience in ETL/data pipelines, semantic web standards (RDF, SPARQL).
This is an excellent opportunity to work with some of the latest technologies on a really interesting project
If you have the right experience and are looking for a new role, please send in your CV.

About the Company

Amass Technology is a Software, Cloud and Data focused Recruitment business helping clients across Europe to scale their tech teams. In a world of Technology, Amass brings people together. We understand that the best technology in the world cannot be implemented without the best people in the world. This is why we put our client's culture and our candidate's values at the centre of what we do. WHAT SETS US APART TECHNOLOGY Cutting-edge CRM system with over 50,000 experts in Software, Cloud and Data based in Europe Large... Know more