Full-Time

Ontology Senior Analyst

AI & Data

Ernst & Young

Ernst & Young

5,001-10,000 employees

Global professional services: consulting, assurance, tax

Compensation Overview

$106.9k - $200.6k/yr

No H1B Sponsorship

Washington, DC, USA + 1 more

More locations: McLean, VA, USA

Hybrid

Most client-serving work is in person 40–60% of the time; travel of 20–30% or more may be required.

US Top Secret Clearance Required

Bachelor's

Category
Data & Analytics (1)
Required Skills
Data Visualization
Data Science
Version Control
Data Governance
Data Analysis

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Requirements
  • 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 artificial intelligence and 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.
Responsibilities
  • Design, develop, and deploy data analytics, business intelligence, workflow automation, and low-code application solutions for a Department of Defense client.
  • Work directly with the client and civilian government stakeholders to transform business requirements into actionable analytics, dashboards, and mission-support applications.
  • Design, build, and maintain scalable and robust solutions that unify, enrich, and analyze data from multiple sources.
  • Support operational analytics, enterprise reporting, workflow modernization, artificial-intelligence-enabled tools, and Power Platform-based solutions.
  • Define ontology objects, relationships, and governance models aligned to mission outcomes.
  • Map curated enterprise data products into ontology-driven environments and establish standardized relationships between entities to support analytics, reporting, and operational decision-making.
  • Facilitate collaboration among business owners, data architects, engineers, and end users to define data definitions, business rules, object hierarchies, metadata standards, and data governance requirements.
Desired Qualifications
  • Experience with Palantir Foundry, including ontology development, object modeling, Workshop applications, data materialization, pipeline integration, and operational decision-support use cases.
  • Experience supporting Department of Defense clients, shore infrastructure, logistics, asset management, facilities management, maintenance operations, or readiness-focused analytics environments.
  • 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.

EY (Ernst & Young) provides professional services at a global scale, offering consulting, assurance, tax, and transaction advisory services. It serves clients across industries such as technology, media, real estate, hospitality, and construction. Instead of selling a single product, EY works with clients through tailored engagements where cross-disciplinary teams analyze challenges, design strategies, perform audits, help with tax planning, and assist with mergers or divestitures. What sets EY apart is its worldwide reach and integrated service model, industry-specific expertise, and focus on responsible business practices like sustainability, cybersecurity, and workforce flexibility. EY’s goal is to help organizations improve performance, manage risk, and achieve sustainable growth while building a better working world.

Company Size

5,001-10,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Boston, Massachusetts

Founded

1991

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Simplify Jobs

Simplify's Take

What believers are saying

  • EY.ai Agentic for Sales launched March 2, 2026, broadening AI-led revenue opportunities.
  • EY's Copilot rollout reached 150,000 users, boosting productivity 15 percent for client delivery.
  • EY's Snowflake Innovation Center, launched February 10, 2026, deepens cloud-data transformation partnerships.

What critics are saying

  • EY paid £105.5 million to settle NMC Health claims on May 18, 2026.
  • EY faces Shell audit probes; four partners left after December 2025 rotation breaches.
  • EY cut 3,000 U.S. jobs in 2025, signaling overcapacity and partner-client pressure.

What makes Ernst & Young unique

  • EY Canvas now embeds agentic AI across 160,000 audits in 150 countries.
  • EY and Microsoft invested over $1 billion on May 21, 2026, for enterprise AI.
  • EY bought Supply Nexus on May 12, 2026, strengthening supply-chain automation and AI consulting.

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Benefits

Professional Development Budget

Flexible Work Hours

Remote Work Options

Company News

Business Insider
Jul 30th, 2026
EY's 'invisible' AI router cuts token costs by 60% by directing queries to cheaper models

EY has introduced an "invisible" AI router to manage internal AI spending, helping cut token consumption by up to 60% since its April rollout. The router sits behind specialised AI tools and directs employee queries to the most appropriate model for each task, rather than defaulting to the most powerful option. Token costs have become a growing concern as AI providers increasingly charge based on usage. EY's AI Pulse survey found that 82% of senior leaders at companies investing in AI were worried about token usage. The router has been deployed on department-specific platforms, including tax and risk functions, though not on the general Microsoft Copilot chatbot available to all staff. EY has also implemented token budgets based on employees' roles and departments. The firm's global consulting AI leader Dan Diasio said companies should focus AI investment on areas with the deepest impact rather than spreading resources thinly.

Yahoo Finance
Jul 29th, 2026
FRC fines EY $1.5M over Made.com audit failures before 2022 collapse

The UK's Financial Reporting Council has fined EY nearly £1.2m and audit partner Julie Carlyle £49,000 for failings in their 2021 audit of Made.com. Both received severe reprimands for breaching international auditing standards regarding going concern and deferred tax assets. The FRC said the auditors relied on management forecasts without sufficient challenge or adequate testing. Made.com, an online furniture retailer that listed on the London Stock Exchange in June 2021, entered administration in November 2022 after reporting a £35.3m loss. EY later disclaimed its opinion on Made.com's 2022 interim statements due to material uncertainty about the company's ability to continue operating.

Yahoo Finance
Jul 16th, 2026
Australia and New Zealand apply pressure on Big Four over misconduct and workforce concerns

Australia's securities regulator is reviewing internal and whistleblower complaints about audit conduct at all Big Four accounting firms. The Australian Securities and Investments Commission will examine allegations of misuse or sharing of confidential information at PwC, Deloitte, EY and KPMG. The review follows multiple scandals, including PwC Australia's 2023 tax leaks case, where a former partner disclosed confidential government information about multinational tax avoidance laws. KPMG Australia recently revealed that more than two dozen employees, including one partner fined A$10,000, used AI to cheat on internal training exams. Meanwhile, Deloitte's latest workforce survey in New Zealand indicates younger professionals are becoming more selective about careers in public accounting.

Associated Press
Jul 11th, 2026
Trinidad and Tobago signs agreements for 450MW US data centers amid environmental concerns

Trinidad and Tobago has signed agreements with two US companies to develop data centres in the Caribbean nation. The memorandums of understanding with Florida-based Hummingbird AI Holdings and New York's Ernst and Young were signed on Friday, marking the first such deals with a Caribbean country. Ernst and Young will develop a 300-megawatt data centre, whilst Hummingbird AI Holdings plans a 150MW AI infrastructure facility. The government said the initiatives could generate over 5,000 jobs. However, the deals have sparked environmental concerns. Social activist Dr Wayne Kublalsingh criticised the energy consumption plans, whilst water-intensive data centres could strain Trinidad and Tobago's already stretched water supply system.

The Register
Jul 6th, 2026
EY sacks staff for allegedly accessing Australian PM's bank account

EY has sacked two staff members who allegedly accessed Australian Prime Minister Anthony Albanese's bank account details whilst working on a contract for Commonwealth Bank. The bank has not commented on how the contractors accessed such sensitive information. The incident means all Big Four consultancies now face scrutiny in Australia. KPMG's chair recently departed after inappropriate use of client data, whilst Deloitte repaid fees for submitting an AI-generated report. PWC faced the most serious scandal, using knowledge gained from tax policy consultations to advise tech companies on reducing tax payments. EY, formerly Ernst and Young, has not disclosed further details about the alleged breach or the circumstances surrounding the access to the Prime Minister's banking information.