AI Security Engineer (Conversational AI)

About the role

ESET is hiring an AI Security Engineer (m/f/n) for its newly established AI Threat Research and AI Conversation Security team in Bratislava, within the Technology Division. As a founding member, you will help shape the team's direction and methodology. The team researches attacks against conversational AI systems, then turns the resulting detections into products shipped across endpoint, cloud and standalone form factors.

Key responsibilities

• Research attacks against conversational AI systems by probing and breaking them to find vulnerabilities before adversaries do.
• Design and propose mitigations, protections and detection strategies based on adversarial research findings.
• Build a multilayered detection core that identifies malicious prompts and attempts to manipulate AI systems.
• Package and deploy detection capabilities across endpoint, cloud and standalone environments.
• Work with the threat detection department, product teams and endpoint teams to integrate defenses into shipping security solutions.
• Evaluate open-source and proprietary AI tooling to stay current with the evolving attack surface.
• Shape the team's technical direction and methodology, with the chance to grow into a Team Lead role over time.

Required profile

• Strong software engineering background, able to build production systems, not just prototypes.
• 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: experience with machine learning and AI, including fine-tuning and deploying language models; C++ for performance-critical detection components; cybersecurity or threat research background.

Required skills

• Python for building detection and security tooling
• Desirable: PyTorch, TensorFlow, Hugging Face, scikit-learn, vLLM, Ollama, ONNX, Docker, Kubernetes, AWS, Hadoop, Spark, Kafka, OpenClaw, OpenCode, Git, JIRA, Confluence

What we offer

• Basic wage from 2,800 EUR gross per month, with possible increase for skills and experience; performance bonus up to 10% of basic salary twice a year.
• Healthcare, multisport card, travel card, supplementary pension saving and family allowances.
• Office refreshments, activity room, loyalty benefits and discounts from external providers.