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Senior Data Scientist – Generative AI / LLM Specialist
  • Warsaw
Senior Data Scientist – Generative AI / LLM Specialist
Warszawa, Warsaw, Masovian Voivodeship, Polska
SQUARE ONE RESOURCES sp. z o.o.
21. 3. 2026
Informacje o stanowisku

technologies-expected :


  • Generative AI
  • NLP
  • Deep Learning
  • NumPy
  • HuggingFace
  • LangChain
  • LLM
  • Python

technologies-optional :


  • Databricks
  • Google Cloud Platform
  • Azure DevOps

about-project :


  • We are looking for a Data Scientist to join our AI team and support clients in building end-to-end Talk-To-Data (TTD) solutions powered by LLMs and GenAI models. The AI team focuses on cutting-edge aspects of Generative AI and LLMs with applications such as RAG, summarization, multi-agent workflows, and model fine-tuning. With deep, PhD-level expertise in GenAI, NLP, and Computer Vision, this is an excellent environment for professionals eager to push their skills to new heights. We are seeking candidates for long-term engagement in GenAI and related domains.

responsibilities :


  • Develop end-to-end GenAI applications such as chatbots, voicebots, and Talk-to-Data systems, including data ingestion, retrieval layers, orchestration (e.g., LangChain, LlamaIndex, LangGraph), API/backend, and simple UI where needed.
  • Design and implement RAG pipelines with vector databases, hybrid search, rerankers, query transformation, and evaluation frameworks for relevance and robustness.
  • Perform model selection, prompting strategies, and fine-tuning (LoRA/QLoRA/SFT) for text, code, and multimodal models, including guardrails, output evaluation, and A/B testing.
  • Design, integrate, and optimize LLM interactions with external tools, APIs, and data sources using Model Context Protocol (MCP) connectors.
  • Understand business requirements and translate them into technical goals, define success metrics, audit data feasibility, and align stakeholder expectations.
  • Support project delivery and pre-sales initiatives.

requirements-expected :


  • Solid understanding of deep learning concepts.
  • Experience in Machine Learning, particularly in Generative AI (LLM/LMM), with focus on NLP or multimodal models.
  • Experience gathering business requirements and translating them into technical plans, data processing, feature engineering, model evaluation, hypothesis testing, and model deployment.
  • Strong Python and object-oriented programming skills; working knowledge of SQL and vector databases.
  • Experience with Azure or GCP cloud platforms.
  • Knowledge of Deep Learning and GenAI libraries: NumPy, PyTorch, HuggingFace, LangChain, LangGraph, and GenAI APIs (OpenAI, Gemini).
  • Hands-on experience designing or operating MCP servers/clients for LLM agents.

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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