Senior Data Scientist

Bulgaria, Hungary, Lithuania, Poland

We are seeking a highly skilled Senior Data Scientist with a strong background in Machine Learning and Large Language Models (LLM) to join our growing team.

Work at Exadel - Who We Are 

We don’t just follow trends - we help define them. For 25+ years, Exadel has transformed global enterprises. Now, we’re leading the charge in AI-driven solutions that scale with impact. And it’s our people who make it happen - driven, collaborative, and always learning.

About Our Customer

America’s un-carrier delivers an advanced 4G LTE and transformative nationwide 5G network offering reliable connectivity. The brand operates in parts of Europe, but the U.S. is its largest market. The un-carrier’s customers benefit from its unmatched combination of value and quality and unrivaled drive for disruption, creating competition and innovation in wireless and beyond.

Requirements

  • 5+ years of hands-on experience in Data Science with a focus on Machine Learning
  • Proficiency in LLM applications, including fine-tuning and optimizing models
  • Strong background working with AI technologies such as OpenAI and earlier versions of GPT
  • Familiarity with working in large-scale organizations and understanding complex systems and data pipelines
  • Expertise in improving the accuracy of LLM and driving innovations in language model performance
  • Strong analytical skills and ability to work with large datasets to derive meaningful insights
  • Ability to communicate complex technical concepts to non-technical stakeholders
  • Availability to work until 7 PM CET

English level

Upper-Intermediate

Responsibilities

  • Apply advanced Machine Learning techniques to design and develop LLM-based applications and enhance performance
  • Utilize AI technologies such as OpenAI and earlier versions of GPT to improve the accuracy and efficiency of language models
  • Work with AI solutions to test LLM accuracy, ensuring high-quality model outputs
  • Evaluate model quality by measuring the percentage of correct responses (accuracy) and identifying areas for improvement
  • Automate the testing process with a focus on achieving 80% accuracy in model predictions
  • Collaborate with cross-functional teams to implement innovative solutions and solve complex problems using LLM applications
  • Conduct research and continuous optimization of LLM models to enhance their overall performance
  • Work closely with stakeholders to identify business needs and develop data-driven solutions that add value to the organization
  • Stay current with the latest advancements in AI and Machine Learning technologies, contributing to ongoing improvements and optimizations

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