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!

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