Mirrai Careers

Application & AI Security Engineer

AdTech Holding

Limassol, Cyprus Full-time Posted today
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Responsibilities: * Run security reviews of services, integrations and public APIs before they go to production, including manual review of critical code. * Do threat modeling for new features with product teams at the design stage. * Own security checks in the development lifecycle (static analysis, dependency scanning, secret detection), covering coverage, rules and triage of findings with teams. * Build a unified vulnerability management process, including the vulnerability register, prioritization, SLAs, retesting and bug bounty. * Secure AI integrations and define access policies for service and AI agent accounts. * Run penetration tests and audits: scope them, accept the results and follow findings through to systemic fixes. * Develop and maintain standards and practices for developers, including secure development requirements, guidelines and team training. Requirements: * 3+ years of experience in application security, covering code and architecture reviews, SAST, DAST, SCA and OWASP. * Strong manual testing skills and hands-on experience with static analysis, including writing your own custom rules. * A solid understanding of how authorization works in practice: OAuth, OIDC, JWT, token scopes and delegated permissions. * Ability to read PHP, Go and JavaScript code and to automate tasks in Python or Bash. * Ability to drive results with teams you don’t manage directly, including through security champions. * Interest in LLM application security, such as prompt injection and AI agents’ access to data. * Working proficiency in Russian and English. What you should know * Manual testing with Burp Suite or ZAP * Static analysis * Dependency scanning * Secret detection in code * Vulnerability management * OWASP Top 10 * OWASP API Security Top 10 * OWASP Top 10 for LLM Applications * ASVS Our stack: * Languages: PHP (Symfony), Go, JavaScript/TypeScript, Python * Data: PostgreSQL, MySQL, ClickHouse * CI/CD: Docker, GitLab/GitHub, TeamCity * Security: SonarQube, Nessus * OS: Linux Nice to have: * Experience in AdTech or other high-load environments * DevSecOps experience * Experience testing LLM applications * Bug bounty or CTF experience * OSWE or GWEB certification We offer freedom of choice: with us, you'd have a cafeteria benefits system where you can choose which benefits would fit your individual needs. And, of course, a standard pack of benefits as well: health insurance, fully covered 10 working days of sick leave per year, 5 additional day-offs per year, English and other languages compensation, quarterly, and annual bonuses, corporate events, gifts, gym at the office, also food (yummy!) - you can find snacks in our worldwide working spaces and breakfasts & lunches in the offices! Please note, that by applying to this position, you confirm your consent to the processing of your personal data for recruitment purposes

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