Summary You will become part of the newly established AI Threat Research and AI Conversation Security team within the Technology Division in Bratislava. As a founding member, you have a unique opportunity to shape the team's direction and methodology from the ground up. The team researches attacks against conversational AI systems — probing and breaking them to understand how adversaries exploit large language models. Job description Beyond research, the team designs and implements detection mechanisms and translates these defenses into shipping products across endpoint, cloud, and standalone form factors. As a Conversational AI Security Engineer, you bridge adversarial research and production engineering — building detection mechanisms to defend conversational AI systems and shipping those defenses as products. Your work spans the full lifecycle, from breaking models to running detection in production. About the Role Research attacks against conversational AI systems — exploring, probing, and breaking them to discover vulnerabilities before adversaries do. Design and propose mitigations, protections, and detection strategies based on findings from adversarial research. Build a multilayered detection core, combining different approaches to identify malicious prompts and attempts to manipulate AI systems. Productize detection capabilities — packaging and deploying them across endpoint, cloud, and standalone environments. Collaborate with the broader threat detection department, product teams, and endpoint teams to integrate defenses into shipping security solutions. Evaluate and experiment with open-source and proprietary AI tooling to stay current with the rapidly evolving attack surface. Shape the team's technical direction and methodology as a founding member, with the opportunity to grow into a Team Lead role over time. Essential Requirements Strong software engineering background — ability to build production systems, not just prototypes. Proficiency in Python for building detection and security tooling. Understanding of how large language models work and how they can be manipulated or attacked, including prompt injection, jailbreaking, and adversarial inputs. Ability to work independently in a newly forming team with minimal defined processes. Desirable Requirements Experience with machine learning and AI, including fine-tuning and deploying language models. C++ for performance-critical detection components. Background in cybersecurity or threat research. Technologies Python, C++, PyTorch, TensorFlow, Hugging Face, scikit-learn, vLLM, Ollama, ONNX, Docker, Kubernetes, AWS, Hadoop, Spark, Kafka, OpenClaw, OpenCode, Git, JIRA, Confluence Compensation Basic wage component (brutto): from 2800 EUR/m. (brutto) * 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 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.

AI Security Engineer (m/f/n).

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