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T Hub - Data Scientist (AI&LLM)
  • Warsaw
T Hub - Data Scientist (AI&LLM)
Warszawa, Warsaw, Masovian Voivodeship, Polska
T-Mobile
18. 7. 2025
Informacje o stanowisku

technologies-expected :


  • LLAMA
  • Deepseek
  • Mistral
  • Python

about-project :


  • We seek an AI Expert with deep expertise in designing, implementing, and optimizing Retrieval Augmented Generation (RAG) systems in on-premises environments. The ideal candidate will have hands-on experience with vLLM, liteLLM, and open-source LLMs like LLAMA 3.2, along with a proven ability to integrate these tools into scalable, secure, and high-performance enterprise workflows.
  • Network & Services International (NWI) develops, plans, builds and operates the international network infrastructure of DTAG and produces intercarrier and wholesale services for the sales units W-IC, B2B and IoT.
  • The Squad T-BDA is responsible for providing seamless AI and Automation solutions to DT internal customers which are integrated in a self-hosted environment.

responsibilities :


  • RAG System Development:
  • Architect and deploy end-to-end RAG pipelines, combining retrieval mechanisms (e.g., vector databases like Neo4j) with generative models (e.g., LLAMA) for enterprise use cases.
  • Fine-tune and optimize retrieval models to ensure high accuracy and low latency in on-prem environments.
  • Model Integration & Deployment:
  • Implement and customize inference servers using vLLM for efficient LLM serving and LiteLLM for lightweight model orchestration.
  • Integrate open-source LLMs (e.g., LLAMA, Mistral) with proprietary data sources and APIs.
  • On-Prem Infrastructure Management:
  • Design GPU-optimized, scalable infrastructure for LLM training and inference, ensuring compliance with security and data governance policies.
  • Collaborate with DevOps teams to containerize workflows using Docker/Kubernetes and automate MLOps pipelines.
  • Performance Optimization:
  • Apply techniques like quantization, pruning, and dynamic batching to maximize resource efficiency in resource-constrained on-prem setups.
  • Monitor system performance, troubleshoot bottlenecks, and ensure high availability.
  • Cross-Functional Collaboration:
  • Partner with data engineers to curate and preprocess domain-specific datasets for retrieval and generation tasks.
  • Translate business requirements into technical solutions for stakeholders in telco environments.

requirements-expected :


  • Education:
  • Bachelor’s/Master’s/PhD in Computer Science, AI, or related field
  • Experience:
  • 3+ years in ML/AI roles, with 2+ years focused on RAG systems.
  • Proven experience deploying LLMs in on-prem or hybrid environments.
  • Proficiency with vLLM, LiteLLM, and open-source LLMs (e.g., LLAMA, Deepseek, Mistral).
  • Experience in introducing AI Agents/Assistants
  • Technical Skills:
  • Strong Python expertise with frameworks like PyTorch, Hugging Face Transformers, and LangChain.
  • Experience with vector/graph databases (e.g. Neo4j).
  • Familiarity with Linux-based systems and RedHat OpenShift
  • Soft Skills:
  • Ability to communicate complex AI concepts to non-technical stakeholders.
  • Strong problem-solving skills and adaptability in fast-paced environments.

offered :


  • Employment contract
  • Additional day off on the occasion of birthdays/namedays
  • Medical package and life insurance
  • Benefit platform - you choose what you benefit from
  • Access to training platforms to improve your knowledge
  • I know Talent - training or money for referring friends to work ?!
  • Besides, with us you can count on access to our products and services at preferential terms and benefits, which you will read about below

benefits :


  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • life insurance
  • flexible working time
  • corporate products and services at discounted prices
  • integration events
  • mobile phone available for private use
  • no dress code
  • parking space for employees
  • extra social benefits
  • sharing the costs of tickets to the movies, theater
  • holiday funds
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • employee referral program
  • charity initiatives
  • extra leave
  • Benefit Platform

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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