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Ernst & Young

Global professional services: consulting, assurance, tax

AI Engineer

AI Application EngineeringUpdated on Nov 14
Full-timeWarsaw, PolandNo salary listedIn-person

About the Job

Requirements

  • Very good verbal and written English language skills.
  • Strong problem-solving and analytical thinking skills.
  • Experience developing software solutions in Python.
  • Understanding of Generative AI and Large Language Models.
  • Hands-on experience building applications using modern AI frameworks.
  • Understanding of Retrieval Augmented Generation (RAG) concepts.
  • Understanding of AI Agent architectures, tool integration patterns, and interoperability standards such as Model Context Protocol (MCP).
  • Experience integrating applications with REST APIs and external services.
  • Knowledge of software engineering best practices, testing, and version control.
  • Experience working with Docker and cloud environments.
  • Ability to work effectively in multidisciplinary teams.

Responsibilities

  • Design and implement AI-powered applications based on Large Language Models and Generative AI technologies.
  • Build and optimize Retrieval Augmented Generation, document-processing, and enterprise knowledge-retrieval solutions using structured and unstructured data, vector databases, and hybrid search.
  • Develop AI Agents capable of interacting with business systems, APIs, and knowledge repositories.
  • Integrate AI solutions with client systems and enterprise platforms.
  • Implement agent memory, context management, and orchestration mechanisms.
  • Evaluate and improve the quality, reliability, and performance of AI solutions.
  • Support the deployment and productionization of AI applications in collaboration with Systems Engineers.
  • Contribute to proof-of-concept initiatives and rapid prototyping activities.
  • Collaborate, support, and share knowledge within the team.
  • Stay current with the fast-evolving AI ecosystem, frameworks, and development practices.

Desired Qualifications

  • Experience with Python-based AI and agent frameworks such as LangGraph, OpenAI Agents SDK, PydanticAI, LlamaIndex, CrewAI, Google ADK, or Microsoft Agent Framework.
  • Knowledge of Azure AI Foundry, Azure OpenAI Service, and Azure AI Search.
  • Experience designing evaluation frameworks for AI applications.
  • Understanding of agent memory, context engineering, and long-context strategies.
  • Experience building multi-agent systems.
  • Experience developing AI solutions in regulated industries.
  • Contributions to open-source AI projects.
  • Interest in emerging topics such as Agent-to-Agent (A2A), reasoning models, and AI safety.

About the Company

Ernst & Young

Global professional services: consulting, assurance, tax

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
Not listed
Total funding
Not listed
Headquarters
Boston, MA
Founded
1991

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