Senior Data Scientist – GenAI

LINKWarszawanofluffjobspublished 09/29/2026
Must-have:PythonGitAWSAzureGoogle CloudDockerKubernetesCloudBackendDevOpsCI/CDAIHybrid

We are looking for an experienced professional to join projects focused on Generative AI, LLMs, RAG, and AI Agents . The rol

Daily tasks

  • Design and develop production-grade solutions using LLMs and Generative AI.
  • Build and optimize RAG systems, including vector search, hybrid search, reranking, and query optimization.
  • Develop AI Agents and agentic AI solutions.
  • Work with frameworks such as LangChain, LlamaIndex, LangGraph, or similar technologies.
  • Work with MCP to integrate AI agents with external tools and systems.
  • Select appropriate models and develop prompt engineering and fine-tuning strategies, including LoRA/QLoRA/SFT.
  • Implement LLM evaluation, validation, guardrails, and quality control mechanisms.
  • Develop APIs/backend components and integrate AI solutions with existing systems.
  • Contribute to technical architecture and technology selection.
  • Collaborate with engineers, developers, and product teams.
  • Share knowledge and support less experienced team members.

Requirements

6+ years of experience in Data Science, AI Engineering, Machine Learning, or a related field. 4+ years of professional Python development experience. 2+ years of hands-on experience with LLMs / Generative AI , preferably with RAG-based solutions. Strong knowledge of Python, LLMs, RAG, and Generative AI . Practical experience with LangChain, LlamaIndex, LangGraph , or similar frameworks. Experience with AI Agents / Agentic AI ; MCP experience is a strong advantage. Knowledge of vector databases, hybrid search, reranking, and LLM evaluation . Experience with model fine-tuning , such as LoRA, QLoRA, or SFT. Experience with at least one major cloud platform: Azure, AWS, or GCP . Familiarity with Docker, Kubernetes, and CI/CD . Good understanding of AI/ML architectures and production deployment practices . Excellent English communication skills . Nice to Have Experience with Spark / Databricks . Experience with GitHub Actions, GitLab CI, or Azure DevOps . Experience with multi-agent systems and agentic AI workflows . Experience building scalable, production-grade AI systems. Experience with multimodal AI models .

Must have: Data science, AI, Machine learning, Python, Cloud platform, AWS, Docker, Kubernetes

Nice to have: Spark, Databricks, GitHub, GitLab CI, Azure DevOps