Data Scientist (Middle/Senior, Generative AI)

Join Kyivstar as a Data Scientist (Middle/Senior, Generative AI)
Are you passionate about pushing the boundaries of AI and working on cutting-edge projects that make a real impact? Kyivstar, the leading telecom operator in Ukraine, is looking for a talented Data Scientist to join our team and drive innovation in Generative AI.

About the Project:

As part of its AI transformation strategy, Kyivstar is investing in the integration of Generative AI into day-to-day processes and product development. One of the key directions of this strategy is building AI assistants and services powered by Big Data, Cloud, and AI technologies. You will play a crucial role in designing and implementing AI-driven solutions using advanced tools like Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG) architectures.

Your Responsibilities:

· Build document parsing and data collection pipelines;
· Build data structures for AI assistants;
· Develop AI assistants;
· Fine-tune LLMs;
· Prepare development and deploy documentation for DevOps team;
· Plan project, explain approaches and discuss results / business impacts with customers.

Necessary skills:

· 4+ year experience with Python (statistical, data mining, ML, DL, NLP packages);
· Strong Python skills with experience in writing scalable software modules;
· Fundamental knowledge of ML/DL theoretical concepts;
· Good knowledge of SQL and experience working with Relational Databases;
· Experience in NLP techniques, vector storages and semantic search;
· Hands-on experience with Large Language Models (LLMs), Retrieval-Augmented Generation (RAG) architectures and AI-driven content generation (LangChain preferred);
· Experience in parsing and extracting data from unstructured and semi-structured documents (PDF, markdown, docx, etc.);
· Good understanding of RESTful APIs and web-development basic skills;
· Proficiency in Git and Docker.

Would be a plus:

· Experience with speech-to-text, text-to-speech;
· Experience with DL models fine-tuning;
· Experience with Data Science within Telecom;
· Experience with PySpark;
· Experience with Azure/AWS.

Why Kyivstar?

· Work with vast datasets at one of the largest telecom operators in Ukraine;
· Gain hands-on experience with the latest Cloud technologies and tools;
· Engage in diverse tasks and projects that challenge and grow your expertise;
· Be part of a talented, collaborative, and innovative team of data scientists;
· Flexibility in tools and approaches, allowing you to explore and innovate.