Staff AI Security Engineer - Platform & Tools

LinkedIn; California; Hybrid; USD 152,000 - 248,000; Full time

Job summary

LinkedIn seeks a Staff Security Engineer to reinforce our Platform & Product Security team. You will secure LinkedIn's AI applications, infrastructure, and development workflows, leading threat models and building scalable, secure-by-default tooling to detect and mitigate vulnerabilities at scale.

You will collaborate across security, platform, and ML/AI teams to drive policy, standards, and secure adoption of AI tooling while maintaining a strong security posture and trust across the company.

Qualifications

• BA/BS in CS, cybersecurity, or related field, or equivalent technical experience.
• Experience with AI/ML security risks (e.g., prompt injection, data poisoning).
• 5+ years in security engineering and knowledge of application security, authentication and security protocols, cryptography, or supply chain security.
• 5+ years of security assessment methodologies such as threat modeling, design reviews, penetration testing and vulnerability assessment.
• Experience with programming languages such as Java, GoLang or Python.
• Experience architecting or implementing tooling that detects and mitigates security vulnerabilities.

Responsibilities

• Lead and execute adoption of security controls across AI/ML infrastructure, including model scanning, model signing and provenance, and ML pipeline security (MLOps/MLSecOps).
• Architect and build security guardrails and paved roads for agentic workflows: hardening agent SDKs, tool access and permissioning, input/output validation, execution boundaries, sandboxing, and auditability of agent actions.
• Build automation and red-team/detection tooling that continuously identifies, reproduces, and mitigates AI-specific vulnerabilities at scale; partner with Detection & Response on prompt/tool-call telemetry and AI-incident playbooks.
• Lead threat modeling and adversarial red-teaming of AI systems, and maintain a LinkedIn AI threat taxonomy mapped to industry standards. Partner with security and platform teams to embed the resulting threat models and risk assessments into AI platforms, developer tooling, and production services.
• Define AI security standards, reference architectures, and policies across model development, data ingestion, training, inference, and agentic systems; drive secure adoption of AI tooling (vendors, copilots, integrations), including data-sharing and sensitive-data-in-prompt boundaries.
• Drive cross-functional architecture and engineering decisions across platform engineering, security engineering, ML/AI teams, and product/DevEx to build developer platforms, AI systems, and infrastructure that are scalable, reliable, and secure by design.

Skills

AI Security

Security Architecture

Threat Modeling

Technical Leadership

Education

BA/BS in CS or related field

Tools

Java

Go

Python

LangChain

LangGraph

CrewAI

AutoGen

Job description

LinkedIn seeks a Staff Security Engineer to reinforce our Platform & Product Security team. You will secure LinkedIn's AI applications, infrastructure, and development workflows, leading threat models and building scalable, secure-by-default tooling to detect and mitigate vulnerabilities at scale.

You will collaborate across security, platform, and ML/AI teams to drive policy, standards, and secure adoption of AI tooling while maintaining a strong security posture and trust across the company.