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NTT DATA Logo NTT DATA · IT - Software Development

Ai Claude Engineer

Romania, Cluj · Job Posted June 10, 2026
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Job Description

We are looking for a highly skilled AI Developer / LLM Engineer to transform complex spreadsheet-based models into scalable, maintainable applications. This role combines deep analytical skills with modern AI and software development expertise, enabling the migration of business-critical logic from Excel into robust application architectures.

Job Responsibility

  • Analyse complex Excel and spreadsheet-based models, including workflows, logic, and dependencies
  • Understand and document business rules, calculations, edge cases, and implicit assumptions
  • Collaborate closely with stakeholders to validate requirements and ensure alignment with business needs
  • Define the target application architecture and technical approach for conversion
  • Design and develop application-based solutions to replace spreadsheet-driven processes
  • Implement AI-assisted or rule-based logic where appropriate
  • Write clean, maintainable, and well-documented code
  • Ensure full accuracy and parity between existing spreadsheet logic and new application behaviour
  • Support testing, validation, and iterative improvements throughout development

Requirements

  • BSc/MSc in Computer Science or related field
  • Proven experience as an AI Developer or LLM Engineer
  • Hands-on experience with Claude (Anthropic) or similar large language models
  • Strong programming skills, preferably in Python
  • Demonstrated experience analysing and converting complex spreadsheets into applications
  • Solid understanding of data processing, calculations, and business logic modelling
  • Experience building backend services and APIs
  • Ability to work independently, take ownership, and deliver end-to-end solutions

Nice to have

  • Experience with cloud platforms (AWS, Azure, or GCP)
  • Exposure to Generative AI use cases such as automation, reasoning, or Retrieval-Augmented Generation (RAG)
  • Background in data-heavy or analytical domains

What we offer

  • Smooth integration and a supportive mentor
  • Pick your working style: choose from Remote, Hybrid or Office work opportunities
  • Different working hours to suit your needs
  • Sponsored certifications, trainings and top e-learning platforms
  • Private Health Insurance
  • Individual coaching sessions
  • Accredited Coaching School
  • Epic parties or themed events
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