Application & AI Security Engineer

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