Senior Data Scientist – GenAI

Link Group; Polska; Hybrid; PLN 320,000 - 520,000; Full time

Job summary

Link Group is seeking an experienced AI/ML specialist to join projects centered on Generative AI, LLMs, RAG, and AI Agents. The role requires deep Python expertise and hands-on work with state-of-the-art frameworks in a fast-paced environment.

The team emphasizes production-grade AI systems, scalable architectures, and collaboration across data science, engineering, and product teams to deliver impactful results.

Qualifications

• 6+ years of experience in Data Science, AI Engineering, Machine Learning, or a related field.
• 4+ years of professional Python development
• 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

Responsibilities

• We are looking for an experienced professional to join projects focused on Generative AI, LLMs, RAG, and AI Agents . The rol
• Start ASAP
• We're a bunch of super-dedicated and passionate people who truly believe in making a difference and delivering amazing results on a huge scale.
• We're the real deal when it comes to expertise:

Skills

AI Engineering

Machine Learning

Python

LLMs

Generative AI

LangChain

LlamaIndex

LangGraph

RAG

Vector databases

Kubernetes

Docker

CI/CD

GITHUB"

Cloud platforms

Tools

LangChain

LlamaIndex

LangGraph

Job description

• AI
• Machine learning
• Python
• AWS
• Docker
• Angielski
• Spark
• Databricks
• GitHub
• 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.

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.


• 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.

Opis oferty

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

• Start ASAP

We're a bunch of super-dedicated and passionate people who truly believe in making a difference and delivering amazing results on a huge scale.

We're the real deal when it comes to expertise: