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

Employment type
Full-Time

Work arrangement
No