About Bitdefender

Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide. Guardian over millions of consumer, enterprise, and government environments, Bitdefender is one of the industry’s most trusted experts for eliminating threats, protecting privacy, digital identity and data, and enabling cyber resilience. With deep investments in research and development, Bitdefender Labs discovers hundreds of new threats each minute and validates billions of threat queries daily. The company has pioneered breakthrough innovations in antimalware, IoT security, behavioral analytics, and artificial intelligence and its technology is licensed by more than 180 of the world’s most recognized technology brands. Founded in 2001, Bitdefender has customers in 170+ countries with offices around the world. For more information, visit https://www.bitdefender.com

Are you interested in working for a growing company? Bitdefender, one of the market-leading antivirus engines, is used by over 500+ million users worldwide. Our technology has been named Product of the Year by several internationally recognized testing organizations.

As part of the Data Science team, you will develop and deploy models by leveraging the best tools and approaches to address business needs. You will experiment with different technologies and propose the best approaches to achieve your goals, working closely with the Data Analysis, Data Engineering, and Data Warehousing teams.

Responsibilities

Engage in the full Data Science lifecycle: data collection and preprocessing, model training, deployment, and monitoring.Stay updated on innovations, tools, and techniques in large language models (LLMs) to enhance internal Data Science methodologies and make use of the best solutions for projects.Conduct ad-hoc and in-depth data-driven analysis to deliver clear insights and actionable recommendations.Compare models and collect data through experiment design and A/B testing.Handle multiple projects independently, ensuring well-documented processes and clear decision records.

Experience requirements

Hands-on experience with large language model (LLM) tools and frameworks for prompt optimization, evaluation platforms, and orchestration (e.g. Haystack, LangChain, LlamaIndex), including RAGs and agentic behavior.Proficiency in classical machine learning (ML) algorithms as well as deep learning frameworks (e.g. PyTorch, TensorFlow) and architectures, particularly transformer-based models.Strong Python programming skills.Experience in SQL operations and automating data workflows with specialized orchestration tools (e.g. Airflow).Strong knowledge of statistics concepts (e.g. distributions, regression, statistical testing).Willingness and ability to learn new mathematical and/or technical methods.

Education

Bachelor/Master’s degree in Computer Science, Statistics, Engineering or related fields.

Nice to have

Hands-on experience with training and deploying deep learning models in production, including serving live predictions.Capable of translating intricate technical ideas into intuitive terms, with a clear focus on how and why they work.