> Markdown version of [/jobs/ext/2541763-government-and-public-sector-ai-data-ontology-senior-analy](https://www.wearedevelopers.com/jobs/ext/2541763-government-and-public-sector-ai-data-ontology-senior-analy). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Government and Public Sector - AI & Data - Ontology Senior Analy - **Company:** Ernst & Young LLP - **Location:** McLean, VA, United States - **Experience:** Expert - **Salary:** $106,900.0 - $176,500.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Big Data, Data Governance, Data Structures, Meta-Data Management, Metadata Standards, Operational Data Store, Object-Oriented Software Development, Sap Business Objects, SC Clearance, Data Analytics, Low-code, Enterprise Integration, Software Version Control - **Published:** August 8, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9094126/government-and-public-sector-ai-data-ontology-senior-analy ## About the Role We're seeking a highly motivated Senior Engineer to support a DOD client in the design, development, and deployment of data analytics, business intelligence, workflow automation, and low-code application solutions. This individual will work directly with the client and civilian government stakeholders to transform business requirements into actionable analytics, dashboards, and mission-support applications that improve operational effectiveness, transparency, and decision-making., * Demonstrated experience designing and implementing enterprise ontologies, semantic data models, or operational data frameworks that translate business processes, assets, work orders, and performance measures into reusable analytics-ready data structures. Based on PAE SI requirements, this includes defining ontology objects, relationships, and governance models aligned to mission outcomes. * Experience mapping curated enterprise data products into ontology-driven environments and establishing standardized relationships between entities to support analytics, reporting, and operational decision-making. This includes translating Gold-layer data into mission-relevant business objects and enabling downstream consumption. * Experience facilitating collaboration among business owners, data architects, engineers, and end users to define data definitions, business rules, object hierarchies, metadata standards, and data governance requirements that support trusted partners. To qualify for the role, you must have * Must be eligible to obtain and maintain a Secret Clearance * Must have a bachelor's degree * Must have 3-5+ years of related experience within AI & Data * Must be comfortable working in-person as needed * Experience designing and implementing enterprise ontologies, semantic data models or operational data frameworks * Experience mapping enterprise data products into ontology - driven environments and establishing standardized relationships between entities to support analytics, reporting, and decision-making. Ideally, you'll also have · Experience with Palantir Foundry, including ontology development, object modeling, Workshop applications, data materialization, pipeline integration, and operational decision-support use cases. · Experience supporting DOD clients, shore infrastructure, logistics, asset management, facilities management, maintenance operations, or readiness-focused analytics environments, with knowledge of how operational processes translate into data models and decision-support products. · Experience developing governance processes for ontology lifecycle management, including version control, metadata management, object stewardship, change control, and alignment between source-system data structures and operational business processes. Due to the nature of our work in the Government and Public Sector, work may be required to be completed at client, EY and/or contractor sites. Our goal is to assign professionals to projects within a commutable distance of their work location office. In certain circumstances, travel may be required beyond your work location based on client and project needs. Candidates should be willing to travel 20 - 30% or more. What we look for We're interested in passionate leaders with strong vision and a desire to stay on top of trends in the Data Science and Big Data industry. If you have a genuine passion for helping businesses achieve the full potential of their data, this role is for you. ## Related Videos - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Reimagining app development with Low-code and AI](https://www.wearedevelopers.com/videos/1651-reimagining-app-development-with-low-code-and-ai) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [What If Apps Built Themselves? 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