Senior/Staff Application Security Engineer

Nebius Group; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Nebius is seeking a Senior/Staff Application Security Engineer to safeguard our cloud platform. You will implement Secure SDLC, threat modeling, and strong vulnerability remediation across our software stack, collaborating with developers to embed security into development.

Ideal candidates bring 6+ years in app security, experience with OWASP Top 10, and hands-on coding in Python/Go/Java/JavaScript. You will drive security automation and guidelines across CI/CD pipelines.

Qualifications

• 6+ years of experience in application security.
• Strong knowledge of OWASP Top 10 and mitigations.
• Experience with secure coding practices in languages such as Python, Go, Java, or JavaScript.
• Proficiency in Go or Python with willingness to learn Go if necessary.
• Hands-on security experience.

Responsibilities

• Build and maintain Application Security Posture Management (ASPM) at Nebius scale.
• Automate and support SAST, SCA tools in CI/CD pipelines.
• Improve SAST, secrets detection rules; keep false positives low.
• Identify, analyze, and remediate application security vulnerabilities.
• Collaborate with development teams to integrate security into the SDLC.
• Develop and maintain secure coding guidelines for development teams.
• Conduct threat modeling and risk assessments for new and existing applications.
• Provide development teams with security tooling like threat modeling and vulnerability detection.
• Stay updated on security threats and mitigation techniques.
• Serve as an application security SME to other teams.

Skills

Application security experience

Threat modeling

CI/CD security

Secure coding

Tools

Python

Go

Java

JavaScript

Job description

About Nebius:

Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.

Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.

Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R D.Application Security

Application Security

The team is responsible for the security of Nebius's main public offerings :Compute, VPC, Managed K8s, Marketplace, Managed Soperator, and others. This includes building out the Secure SDLC, threat modeling, and vulnerability management platforms.

The Role

We are looking for an Senior/Staff 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, threat modeling and building Secure SDLC.

What you will do

• Build and maintain Application Security Posture Management (ASPM) at the Company scale.
• Automate and support SAST, SCA tools, etc as part of CI/CD pipelines.
• Improving SAST, secrets detection rules. Keeping false positive rate low.
• Identify, analyze, and remediate application security vulnerabilities.
• Collaborate with development teams to integrate security best practices into the software development lifecycle (SDLC).
• Develop and maintain secure coding guidelines for development teams.
• Conduct, run threat modeling and risk assessments for new and existing applications.
• Provide development teams with instruments that facilitate security-related work like threat modelling, vulnerability detection, etc.
• Stay updated on the latest security threats, vulnerabilities, and mitigation techniques.
• Serve as an application security subject matter expert to other teams.

What we look for

• 6+ years of experience in application security.
• Strong knowledge of common application security risks (e.g. OWASP Top 10) and how to mitigate them.
• Experience with secure coding practices in languages such as Python, Go, Java, or JavaScript.
• Proficiency in a common programming language (such as Go or Python) with a willingness to learn Go, if necessary.
• Hands‑on experience

Bonus points

• Confidence in presenting your ideas and opinions in a manner that can be challenged, while responding well to feedback.
• Experience in designi