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Data Scientist (LLM)
  • Gdańsk
Data Scientist (LLM)
Gdańsk, Gdańsk, Pomeranian Voivodeship, Polska
Lufthansa Systems
26. 9. 2025
Informacje o stanowisku

technologies-expected :


  • Python
  • CognigyAI
  • Databricks
  • GenAI
  • NLP

about-project :


  • Chat Assistant is used by over 10 million travelers, it’s evolving from a traditional conversational bot into an advanced, agentic AI. It’s not just about answering FAQs - this assistant already handles end-to-end transactions like rebookings and refunds today, offering a truly seamless travel support experience. The team’s mission is to create the most intelligent, intuitive conversational experience in the travel industry via the move to Agentic AI.

responsibilities :


  • Craft and fine-tune advanced LLM prompts to drive high-performance conversational experiences in the Chat Assistant.
  • Use a data-driven approach to identify limitations in current conversational models and generate effective solutions for challenges such as user engagement, contextual understanding, and content moderation.
  • Design reusable frameworks that encapsulate innovative functionalities and can be adapted across various assistant use cases.
  • Collaborate closely with engineering teams to align GenAI strategies with backend enhancements, contributing to architectural optimization and improved task performance.
  • Prototype, deploy and maintain new LLM or agentic AI based strategies to support emerging features and expand the assistant’s capabilities.
  • Continuously evolve the LHG Chat Assistant architecture with a focus on deepening the assistant’s natural language understanding and response relevance, integrating agentic AI principles to enable more adaptive, goal-oriented interactions in our redesigned system.
  • Build LLM-backed transactional flows.
  • Transition towards agentic AI, orchestrate hybrid solution with AI + deterministic logic.
  • Implement and maintain function calling to backend systems or APIs.
  • Automated testing for all components of AI solutions (prompt, flows, function calls, etc.).

requirements-expected :


  • At least 3 years of commercial experience in Data Science or Machine Learning,
  • Expertise in designing, testing, and optimizing solutions for large language models (e.g., ChatGPT, GPT-4).
  • Proficiency in Python and at least one AI/data- platform (e.g. CognigyAI, databricks)
  • Hands-on expertise with AI/NLP platforms and performance evaluation (A/B testing, error analysis).
  • Solid grasp of current AI/ML research, with a focus on best practices for GenAI and emerging agentic AI concepts.
  • Strong collaborator in agile, cross-functional teams, with excellent technical communication.
  • Awareness of ethical AI practices, including bias mitigation and data privacy.
  • Ability to translate complex concepts into accessible language for non-technical stakeholders.
  • A systematic approach to identifying issues in existing setup and constructing targeted solutions, including the ability to troubleshoot and optimize model behavior under different conversational scenarios.
  • Very good command of English language,
  • Proactive attitude and the ability to work as a team player,
  • The ability to think beyond the current scope of the project,
  • Experience actively participating in a Scrum team by bringing in new solutions,
  • Willingness to travel once per quarter,
  • Willingness to upskill on your own initiative and deriving further insights from data,
  • Willingness to come to our office in Gdańsk two days a week or relocate to Trójmiasto.

offered :


  • An international working environment, atmosphere that stimulates development.
  • Individual career path.
  • Lufthansa Group membership benefits,
  • Flexible working time and place adjusted to employee’s needs. Possibility of starting your workday between 07:00 and 11:00.
  • Workplace adjusted to employees needs.
  • Support for your passion for sports within the local activity group and co-financing Multisport cards.
  • Private medical care for employees and their family members,
  • Life insurance,
  • No dress code,
  • Corporate products and services at discounted prices,
  • Parking space for employees,
  • Holiday funds,
  • Sharing the costs of holidays for kid

benefits :


  • sharing the costs of sports activities
  • private medical care
  • life insurance
  • flexible working time
  • fruits
  • corporate products and services at discounted prices
  • integration events
  • no dress code
  • coffee / tea
  • drinks
  • parking space for employees
  • leisure zone
  • extra social benefits
  • holiday funds
  • sharing the costs of holidays for kids
  • sharing the commuting costs

  • Praca Gdańsk
  • Gdańsk - Oferty pracy w okolicznych lokalizacjach


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