Offensive Security Lead

Role description

Role Overview

The internal offensive security team is responsible for the penetration testing program, red team engagements, and offensive research aimed at uncovering sophisticated attack scenarios targeting high-value assets across the Nebius Cloud stack. The Role is to build and run Nebius' red team capability, designing and executing adversarial simulation across our cloud platform - attacking the same infrastructure our customers depend on - and translating findings into measurable security improvements.

What You Will Do

Build and lead a red team function within Product Security Team, hiring and developing offensive security engineers. Validate and extend early-stage Secure SDLC threat models via continuous penetration testing, assessing threat severity and mitigation status while challenging assumptions made during threat modeling and system development.

Why It Might Be a Fit

6+ years in offensive security - penetration testing, red teaming, or adversary simulation - with at least 1-2 years leading or mentoring a team. Deep experience attacking cloud-native environments: Kubernetes privilege escalation, cloud IAM abuse, virtualization and container escapes.

Requirements

• 6+ years in offensive security - penetration testing, red teaming, or adversary simulation - with at least 1-2 years leading or mentoring a team
• Deep experience attacking cloud-native environments: Kubernetes privilege escalation, cloud IAM abuse, virtualization and container escapes
• Strong fundamentals across the attack lifecycle: initial access, persistence, lateral movement, data exfiltration
• Proficiency developing custom tooling and post-exploitation capabilities (Python, Go, or similar)
• Experience running purple team exercises and working constructively with blue teams
• Ability to write clear, senior-level reports with business-contextualized risk (not just raw findings) that engineers can easily use

Benefits

• Competitive compensation
• Career growth and learning opportunities
• Flexibility and ownership
• Collaborative and innovative culture
• Opportunity to work on impactful AI projects
• International environment and talented teams