Application Security Engineer Platform Security Remote - Europe

Amsterdam, Netherlands; Berlin, Germany; Prague, Czech Republic; Remote - Europe

Why work at Nebius

Nebius is leading a new era in cloud computing to serve the global AI economy. We create the tools and resources our customers need to solve real-world challenges and transform industries, without massive infrastructure costs or the need to build large in-house AI/ML teams. Our employees work at the cutting edge of AI cloud infrastructure alongside some of the most experienced and innovative leaders and engineers in the field.

Where we work

Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&D hubs across Europe, North America, and Israel. The team of over 800 employees includes more than 400 highly skilled engineers with deep expertise across hardware and software engineering, as well as an in-house AI R&D team.

The role

The Security Engineering Team within the Platform Security organization is responsible for the strategic selection, implementation, management, and optimization of cybersecurity tools and technologies that improve security capabilities of the organization's platform. This team is instrumental in fortifying the security posture, proactively identifying and responding to security threats, ensuring the resilience and protection of critical data, systems, and services.

We are looking for an Application Security Engineer who will ensure the security of our software by identifying and mitigating vulnerabilities, implementing best security practices, and collaborating with development teams. The ideal candidate will have a strong background in secure coding, vulnerability assessment, and penetration testing.

Your responsibilities will include:

• Build and maintain ASPM tools and their rules.
• Identify, analyze, and remediate application security vulnerabilities using tools like ASPM.
• Collaborate with development teams to integrate security best practices into the software development lifecycle (SDLC).
• Conduct manual and automated penetration testing of applications.
• Develop and maintain secure coding guidelines for development teams.
• Facilitate threat modeling and risk assessments on new and existing applications.
• Stay updated on the latest security threats, vulnerabilities, and mitigation techniques.
• Serve as an application security subject matter expert to other teams.

We expect you to have:

• 4+ years of experience in application security.
• Strong knowledge of common application security risks (e.g. OWASP Top 10) and how to mitigate them.
• Proficiency in a common programming language (such as Go or Python) with a willingness to learn Go, if necessary.
• Hands‑on experience with security testing tools (Burp Suite, ZAP, Semgrep, etc.).
• Understanding of authentication protocols like SAML or OIDC.
• Experience in conducting threat‑modeling sessions.
• Strong problem‑solving and analytical skills.
• Good written and verbal communication skills in English.
• Willingness to learn new things.
• Being comfortable working independently.

It would be an added bonus if you had:

• Confidence in presenting your ideas and opinions in a manner that can be challenged, while responding well to feedback.
• Experience in designing, building, and maintaining security automation.
• Experience in translating compliance and regulation requirements into technical specifications.
• Experience in exploiting vulnerabilities in web applications, Linux kernels, containers, and networks.
• Security certifications such as OSCP or OSWE.

What we offer

• Competitive salary and comprehensive benefits package.
• Opportunities for professional growth within Nebius.
• Flexible working arrangements.
• A dynamic and collaborative work environment that values initiative and innovation.

We’re growing and expanding our products every day. If you’re up to the challenge and are excited about AI and ML as much as we are, join us!

We conduct coding interviews as part of the process.

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