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Contract

Senior Neo4j Engineer

ARM
City of London
money-bag £910/month Inside IR35
Posted: 24 August 2026 (Today)
Closing date: 23 September 2026
Ref: 225526733

Senior Neo4j Engineer
Duration - 7 months
Location - London, hybrid - 1-2 days per week on site
-910 per day (Inside IR35)


My client, in the financial industry are looking for a Senior Neo4j Engineer to join their fast-paced team on an initial 7 month contract.

  • Can interpret the instruction from the overall solution architect for the project into approaches and tasks in Neo4j, and direct a small engineering team to complete these to high quality
  • Designs and builds the Neo4j graph database schemas, translating the target into concrete node/relationship structures
  • Defines, develops and maintains ETL/ELT pipelines to ingest, transform, and load data from source systems into the graph
  • Designs and defines sub-graph views to control and manage the content available to downstream consumers of the graph
  • Writes and optimises Cypher queries for data loading, transformation, and application-facing retrieval
  • Implements graph data models that balance query performance with semantic accuracy
  • Builds and maintains APIs/integration layers exposing graph data to downstream consumers (including the chatbot)
  • Collaborates with the Knowledge Graph Architect to implement ontology, knowledge and schema changes as code
  • Supports performance tuning, indexing, and scaling of the Neo4j instance
  • Automates data refresh and synchronisation processes between source systems and the graph
  • Troubleshoots data integrity and pipeline issues in collaboration with the Quality Engineer
  • Documents graph schema and data lineage
  • Defines , designs and implements graph quality metrics and measurement techniques to maintain, calculate and display confidence scores
  • Defines and designs APOC and Neosemantic processing within Neo4j to identify and deal with orphans, orphaned subgraphs, duplicates and high similarity objects

Disclaimer:

This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more complex resource solutions. Our specialist recruitment divisions cover the entire technical arena, including some of the most economically and strategically important industries in the UK and the world today. We will never send your CV without your permission. Where the role is marked as Outside IR35 in the advertisement this is subject to receipt of a final Status Determination Statement from the end Client and may be subject to change.

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