App Security Expert

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for an App Security Expert based in Estonia. As an App Security Expert, you will help strengthen application security by designing realistic security test environments and evaluating vulnerabilities in traditional and AI-powered applications. You will focus on emerging security challenges associated with large language models (LLMs), including sensitive information disclosure and excessive agency. Through hands-on security engineering, you will develop deterministic test cases, create evaluation frameworks, and establish reliable methods for distinguishing vulnerable code from secure implementations. You will also contribute to advancing AI-powered static analysis and agent-based security architectures. Working in a remote, technically driven environment, you will collaborate with security specialists to refine testing methodologies and improve evaluation quality. This role is ideal for an experienced application security professional passionate about secure software development, AI security, and building practical solutions to complex cybersecurity challenges.