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Bitdefender

Malware protection software via machine learning

Lead Data Scientist

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeBucharest, RomaniaNo salary listedIn-person

About the Job

Requirements

  • At least 5 years of experience in applied machine learning and artificial intelligence, including hands-on work with production-oriented solutions.
  • Strong Python and SQL skills, with experience working with complex real-world data and building maintainable workflows.
  • Experience with the machine learning lifecycle, including feature engineering, model training, evaluation, deployment, monitoring, and iteration.
  • Practical exposure to large language model-based applications, such as retrieval-augmented generation, embeddings, prompt engineering, vector search, orchestration, or evaluation.
  • Strong communication and leadership skills, with the ability to explain technical trade-offs and guide people and projects.

Responsibilities

  • Lead the Data Science team in building reliable machine learning and artificial intelligence solutions, from problem framing and data exploration to deployment, monitoring, and continuous improvement.
  • Translate business needs into clear technical plans, measurable success criteria, and practical solutions with visible business impact.
  • Work closely with Data Analysis, Data Engineering, Data Warehousing, product, and business stakeholders to design scalable data and model workflows.
  • Set technical standards for clean code, reproducible experiments, model tracking, documentation, observability, and production readiness.
  • Mentor data scientists, support their growth, and help the team make strong technical and product decisions.

Desired Qualifications

  • A Master’s degree or PhD in Computer Science, Mathematics, Statistics, Data Science, Machine Learning, or a related field.
  • Experience with tools such as Google Cloud Platform, Airflow, Docker, Kubernetes, MLflow, Langfuse, FastAPI, BentoML, LlamaIndex, LangChain, Haystack, Milvus, or similar.
  • Familiarity with MLOps, model governance, observability, data quality monitoring, or reusable machine learning and artificial intelligence platform components.

About the Company

Bitdefender

Malware protection software via machine learning

Bitdefender is a cybersecurity company that protects people and organizations by offering a range of security products and services. Its offerings cover prevention, hardening, risk management, and incident analytics for government bodies, large enterprises, SMEs, and individuals, sold through a global network of partners. The company uses advanced machine learning and deep learning to detect malware and other online threats, continuously updating its technology through rapid research and development. Bitdefender distinguishes itself with a strong emphasis on R&D, demonstrated by hundreds of engineers and researchers and a high patent output over the past few years, as well as its broad global reach. The company’s goal is to keep families and businesses safe online by delivering reliable, AI-powered security solutions and ongoing threat intelligence, across countries and sectors.

Company size
1,001-5,000
Company stage
Private
Total funding
$13.3M
Headquarters
Bucharest, Romania
Founded
2001

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