Summary You will become part of the Incident Creator and AI Research team within the Technology Division in Bratislava. The team focuses on detecting malicious activity, combining correlation rules with machine learning models to evaluate potential security incidents from terabytes of behavioral data. Beyond detection, the team builds incident-handling tooling for security operators and develops automation, including potential AI SOC. Job description As an Experienced AI Researcher, you apply machine learning methods to real-world cybersecurity problems — preparing behavioral data, building and evaluating models, and guiding them toward production. Beyond that, you maintain and improve deployed models across their full lifecycle, from monitoring to continuous optimization. About the Role Prepare and process behavioral data for training models that detect malicious activity. Build and evaluate prototypes, iterating on architectures and features until production-quality, on dedicated in-house GPU servers — enough compute to compete with the biggest players in the industry. Deploy models into production and integrate them with existing detection and incident-handling pipelines. Monitor, maintain, and optimize deployed models across their full lifecycle — from drift detection to retraining and performance tuning. When opportunities arise, explore novel architectures beyond applying existing models. Essential Requirements Practical understanding of modern AI/ML methods — knowing which models fit which problems, when to use simpler approaches versus novel architectures, and how to optimize them for production. Proficiency in Python and its AI/ML ecosystem. Experience with AI/ML lifecycle tooling and infrastructure for production model serving and lifecycle management. Ability to work independently and take full ownership of model development from start to finish. Strong drive for continuous learning and staying current with state-of-the-art research. Desirable Requirements University degree in Machine Learning, Data Science, Mathematics, or a related technical field. Basic understanding of computer and network security. Experience with Big Data technologies and cloud platforms (AWS). Technologies Python, Scikit-learn, PyTorch, TensorFlow, Polars, Hadoop, Spark, Hive, Impala, Iceberg, LanceDB, (My)SQL, Kafka, MLflow, Kubeflow, Argo, Git, JIRA, Confluence, Docker, Kubernetes, Jenkins, AWS. Basic wage component (brutto): from 3000 EUR * The final basic wage component can be increased accordingly to individual skills and experience of the selected candidate. * Performance bonus 2 times per year up to 10% of the basic salary paid for the evaluation period(usually 6 months). #LI-JK1 #senior #medior #LI-Hybrid Benefits Health & well-being BenefitPlus Healthcare (check-ups/annual programs) Multisport card Travel card "električenka" Supplementary pension saving Sick days Family Marriage allowance Childbirth allowance Parental contribution ESET family events (Family day, St.Nicholas) Office Refreshments in the office (fruits, coffee, soft drinks) Let´s get together breakfast Activity room, quiet room ESET events (Žranica, Christmas party..), teambuildings Other Loyalty allowance Loyalty extra days off Loyalty cake Loyalty glass award Refer a friend Christmas presents Discounts from external providers Primary location Bratislava Additional locations Brno, Prague Time type Full time Join ESET Talent Community and we will contact you. This is an option for candidates who haven't found any interesting job opening and would like to send us their CV. ESET® provides cutting-edge digital security to prevent attacks before they happen. By combining the power of AI and human expertise, ESET stays ahead of known and emerging cyberthreats — securing businesses, critical infrastructure, and individuals. Whether it’s endpoint, cloud or mobile protection, our AI-native, cloud-first solutions and services remain highly effective and easy to use. Driven by science, ESET technology includes robust detection and response, ultra-secure encryption, and multifactor authentication. With 24/7 real-time defense and strong local support, we keep users safe and businesses running without interruption. An ever-evolving digital landscape demands a progressive, evidence-based approach to security. ESET is committed to world-class scientific research and powerful threat intelligence, backed by R&D centers and a strong global partner network. ESET's purpose is not only to provides cutting-edge digital security, but also to actively contribute to a more innovative and responsible society in terms of education, science and research. At ESET, diversity, equity, and inclusion (DEI) are integral to our corporate culture. We believe in creating a respectful environment, where everyone feels valued and respected, welcoming applications from individuals of all backgrounds, including race, gender, age, religion, disability, and sexual orientation. Learn more about ESET.

Experienced AI/ML Researcher (m/f/n).

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