Security Engineer

4 years on the market — a stable, profitable company backed by international investors;

6× growth over the past year;

2,000,000+ businesses already use Zeely;

#1 in its category in the US market;

200+ specialists on the team;

Markets: US + worldwide.

Identify, prioritize, and fix vulnerabilities across our product and cloud infrastructure;

Respond to security incidents and help defend against attacks in real time;

Close security tickets end to end, from investigation to fix in code or infrastructure;

Integrate security checks and tooling into our development pipeline (SDLC / CI/CD);

Review code and infrastructure changes from a security perspective;

Help implement security controls and gather evidence for compliance (SOC 2, CASA);

Work with the DevOps and Platform teams on access management, secrets, and hardening of our AWS environment.

5+ years of engineering experience, with the ability to work fully independently;

2+ years of hands-on experience in security (Security Engineer, or a combined Security/DevOps or Platform role);

Backend development background in at least one of: Node.js / JavaScript / TypeScript, Java, C#/.NET, Go, or Rust;

Strong practical experience with DevOps and cloud infrastructure (AWS);

Hands-on experience finding and fixing vulnerabilities (OWASP Top 10, cloud misconfigurations, dependency issues);

Experience handling security incidents;

Upper-Intermediate (B2+) English or higher;

Fluent Ukrainian.

A hands-on security role with real impact in a stable, profitable product company;

Work with cutting-edge technologies and contribute to building AI-powered tools;

A strong team of A-level players who push each other to grow;

A remote-first setup with offices in Warsaw and Kyiv;

Regular performance reviews to keep your growth transparent and rewarded.

Intro Call → Technical Interview → Test Task → Final Interview → Reference Check → Offer.

Send us your CV — we'd love to meet you!