About nxzen nxzen is a global technology, consulting, and engineering partner supporting the energy, utilities, and national infrastructure sectors. We help organisations optimise performance, digitise operations, and build safer, smarter, and more resilient systems by combining deep domain expertise with cutting-edge technology.
Our work spans the full infrastructure lifecycle, partnering with clients to deliver practical, outcome-driven solutions across operations, transformation, digital platforms, and engineering. Through our specialist teams and Centres of Excellence, we support the delivery of future-ready infrastructure that enhances efficiency, resilience, and long-term sustainability.
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About the ROLE:
We are looking for a Graph Developer to join our team in Sydney on a 6-month contract.
In this role, you will design, build, configure, test and optimise a Neo4j graph database solution supporting a Network Connectivity Model project.
You will work closely with the Solution Lead Architect, KNIME Engineers, Business Analysts, UAT / Graph Test Analyst and business SMEs to develop graph-based solutions and ensure data and outputs meet business requirements.
Key responsibilities include
- Build and configure the Neo4j graph database solution.
- Implement graph nodes, relationships, properties, labels, indexes and constraints.
- Develop and optimise Cypher queries for analytics and business use cases.
- Support the implementation of the Neo4j analytics foundation and agreed business use cases.
- Validate graph data loaded through KNIME ETL pipelines.
- Support full-load and daily incremental-load testing.
- Perform graph query tuning and performance optimisation.
- Support graph defect triage, investigation and resolution.
- Work with Business Analysts and SMEs to validate graph outputs against business requirements.
- Support System Integration Testing (SIT), UAT, performance/load testing and go-live readiness.
- Document graph implementation, query logic, data assumptions and technical decisions.
- Provide technical guidance to other engineers where required.
About YOU
- Strong hands-on experience with Neo4j or similar graph database technologies.
- Strong Cypher query development and optimisation skills.
- Good understanding of graph concepts, including nodes, relationships, labels, properties, traversal, subgraphs, indexes and constraints.
- Experience implementing graph or relationship-heavy data models.
- Experience validating data loads and resolving data-quality issues.
- Experience supporting testing, defect resolution and production readiness.
- Ability to work effectively in Agile or hybrid delivery environments.
- Strong communication, problem-solving and documentation skills.
Desirable Experience
Experience in any of the following would be highly regarded:
- Geospatial, utility network, asset or connectivity data.
- Electricity distribution networks, GIS, ADMS or asset management data.
- Neo4j APOC, Graph Data Science or graph analytics.
- Cloud-hosted database environments.
- KNIME, Databricks or other ETL/data pipeline platforms.
How to APPLY To apply, please submit a copy of your updated resume. Screening will be conducted as we receive applications, and ONLY shortlisted applicants will be contacted.
For more information or to have a confidential discussion, please contact our People & Culture Manager, Shreya Pahwa on
[email protected].
📌 Graph Developer (Sydney)
🏢 nxzen
📍 Sydney