Offensive Security Lead

Imagine leading the charge against sophisticated cyber threats in a fast-paced, innovative environment. We are talking about building and running the very heart of Nebius' red team capability, shaping how we defend our groundbreaking AI cloud platform. If you are passionate about uncovering vulnerabilities, designing complex attack simulations, and pushing the boundaries of offensive security, then this fully remote, worldwide opportunity might just be your next big adventure.

About Nebius

Nebius is at the forefront of a new era in cloud infrastructure, powering the global AI economy. We are crafting a full-stack AI cloud platform designed to support developers and enterprises alike, from initial data and model training all the way to production deployment. Our platform removes the typical cost and complexity associated with building extensive in-house AI/ML infrastructure.

Our team, comprised of over 1,500 engineers with deep expertise across hardware, software, and AI R&D, is truly built by engineers, for engineers. We tackle the hard problems including large-scale GPU orchestration and inference optimization across compute, storage, networking, and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, Nebius maintains a significant global presence, with R&D hubs spanning Europe, the UK, North America, and Israel.

Overview of the Role

The internal offensive security team at Nebius spearheads our penetration testing program, orchestrates critical red team engagements, and conducts cutting-edge offensive research. Our mission is to uncover sophisticated attack scenarios targeting high-value assets throughout the Nebius Cloud stack. As our Offensive Security Lead, you will be instrumental in designing, building, and executing Nebius' comprehensive red team capability. This critical role involves architecting our adversarial simulation program across our entire cloud infrastructure, ensuring we stay ahead of emerging threats.

Key Responsibilities

Develop, mature, and lead the Nebius red team program from the ground up, establishing its vision and strategic roadmap.
Design and execute advanced adversarial simulation exercises that mirror real-world threat actor tactics, techniques, and procedures (TTPs) against our cloud environment.
Identify and prioritize high-value assets and potential attack paths within the Nebius Cloud stack.
Conduct in-depth offensive security research to discover novel vulnerabilities and attack vectors in our systems, applications, and infrastructure.
Collaborate closely with our blue team, security engineering, and development teams to communicate findings, recommend effective mitigations, and improve overall security posture.
Mentor junior team members, fostering a culture of continuous learning and excellence within the offensive security domain.
Develop comprehensive reports detailing engagement findings, remediation advice, and strategic recommendations for leadership.

Requirements

Extensive hands-on experience in offensive security roles, particularly in red teaming, penetration testing, and vulnerability research.
Deep understanding of cloud security principles, architectures, and common vulnerabilities across major cloud providers (e.g., AWS, GCP, Azure) or similar large-scale distributed systems.
Proficiency in at least one scripting or programming language such as Python or Go, used for developing custom tools and automating tasks.
Strong knowledge of common attack frameworks, methodologies, and security tools.
Proven ability to lead complex security engagements and effectively communicate technical details to both technical and non-technical audiences.
Excellent problem-solving skills and a proactive, inquisitive mindset.
Demonstrated experience building and managing security capabilities or teams is highly desirable.

What You'll Gain

The unique opportunity to build and shape an entire red team capability for a rapidly growing, innovative AI cloud platform.
Significant impact on the security posture of critical infrastructure supporting global AI advancements.
Work alongside a talented, global team of engineers and security experts committed to tackling challenging problems.
A fully remote work environment offering flexibility and the chance to contribute from anywhere in the world.
Continuous professional growth and learning opportunities within a cutting-edge technological landscape.