Lead Security Engineer

📋 Job Overview

Join Zeely as a Lead Security Engineer and help us strengthen and scale security across our products and infrastructure. This role combines high ownership with hands-on engineering. You’ll lead our security direction together with our DevSecOps / Security Engineer: securing our AWS environment, closing security tasks yourself, and owning our SOC 2 and ISO 27001 compliance. You’ll work closely with our Principal System Architect and the Platform, DevOps, and Backend teams as a trusted partner with real authority over technical decisions from a security perspective.

🏢 About Zeely

Zeely is the agentic AI platform for creating, launching, and scaling paid ads. Simply put: we’ve made the best AI solutions and marketing tools available to small and medium businesses — tools that used to be reserved for big brands with expensive marketing teams. The next big step: a B2B solution for large marketing teams and enterprise clients — workflows, creative analytics, and full control over campaigns across the whole team. For companies where performance marketing already runs at scale and needs more efficiency and automation.

A few numbers that speak for themselves:

• 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;
• 250+ specialists on the team;
• Markets: US + worldwide.

We’re not a startup searching for product-market fit — we’re a business with proven results and a clear understanding of what works.

🎯 The Role

Secure our AWS-first cloud environment hands-on: IAM and access management, secrets, hardening, and network security; Own compliance initiatives (SOC 2, ISO 27001, CASA): implement controls, prepare evidence, and work with auditors; Build security into CI/CD: SAST, DAST, SCA, secrets scanning, and infrastructure-as-code checks; Find, prioritize, and fix vulnerabilities across our product and infrastructure, closing critical security tasks yourself; Run incident response and set up monitoring and alerting; Define and prioritize security initiatives and own the security roadmap; Review architecture decisions and code from a security perspective; Set up security policies and processes, and guide the DevOps and Platform teams on implementation; Support B2B clients with security questions, reviews, and due diligence.

✅ Key Responsibilities

• Secure our AWS-first cloud environment hands-on: IAM and access management, secrets, hardening, and network security;
• Own compliance initiatives (SOC 2, ISO 27001, CASA): implement controls, prepare evidence, and work with auditors;
• Build security into CI/CD: SAST, DAST, SCA, secrets scanning, and infrastructure-as-code checks;
• Find, prioritize, and fix vulnerabilities across our product and infrastructure, closing critical security tasks yourself;
• Run incident response and set up monitoring and alerting;
• Define and prioritize security initiatives and own the security roadmap;
• Review architecture decisions and code from a security perspective;
• Set up security policies and processes, and guide the DevOps and Platform teams on implementation;
• Support B2B clients with security questions, reviews, and due diligence.

📌 Required Qualifications

• 7+ years of experience in DevOps, Platform, or infrastructure engineering, including at least 4 years focused on security (DevSecOps, Cloud Security, or Security Engineer);
• Hands-on experience with both SOC 2 and ISO 27001: preparing for, passing, or maintaining audits, understanding the requirements behind each control, and working with auditors;
• Strong hands-on experience with AWS and infrastructure as code using Terraform;
• Proven experience finding and fixing vulnerabilities and handling security incidents;
• Experience leading engineers or acting as a technical lead;
• AWS Professional-level certification (a security-focused Associate certification may also be considered);
• Upper-Intermediate (B2+) English or higher;
• Fluent Ukrainian.

⭐ Desirable Experience

• Backend development background (Node.js / TypeScript, Java, C#/.NET, Go, or Python), or a career path from backend to DevOps/Platform to Security;
• Experience with CASA assessments;
• Experience implementing GDPR and/or CCPA (CPRA) requirements;
• Understanding of HIPAA or PCI DSS;
• Other security certifications (CISSP, OSCP, CKS) or GCP certifications.

🎁 Benefits

Security ownership at one of the world’s leading AI companies: Zeely is #22 in a16z’s Top 50 consumer AI apps by monthly revenue; Security is a strategic priority for the company: a direct line to the C-level co-founders, real authority over technical decisions, and a strong voice in how the product is built; Work with cutting-edge technologies and 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.

🛂 Visa & Eligibility

Fluent Ukrainian is required.