Senior AppSec Engineer: AI-Driven Security & Cloud

Unity; Town of Texas (WI); On-site; USD 160,000 - 241,000; Full time

Job summary

Unity is seeking a Senior Application Security Engineer to lead threat modeling, secure design reviews, and code evaluation for Unity products and services across engines, editors, and cloud platforms. You will leverage manual techniques and AI-assisted tooling to identify and remediate risks.

You will collaborate with engineering teams across the US and EMEA, secure AI and agentic systems, and contribute to Unity's secure development lifecycle while turning findings into guardrails and secure

Qualifications

• Experience in application security, with a track record on complex, large-scale systems.
• Strong command of secure coding and common vulnerability classes (OWASP Top 10 and beyond)
• Hands-on secure development experience across several languages.
• Practical penetration testing, security assessment, and vulnerability management experience with standard tooling.
• Experience with Cloud security (GCP, AWS, or Azure).
• Working knowledge of secure architecture patterns.
• Clear technical communication for both engineers and non-technical partners across regions.

Responsibilities

• Lead threat modeling, secure design reviews, and penetration testing for Unity products and services, from the engine and editor to cloud services, APIs, and internal platforms.
• Perform deep code review and manual testing on high-risk systems, using AI-assisted review processes and covering areas automated tooling cannot fully reach.
• Build and operate security automation. Use and extend AI-assisted tooling for continuous code review, finding triage, and automated penetration testing, and step in where human judgment is required.
• Secure Unity's AI and agentic systems. Assess AI-native products, LLM integrations, and agent workflows for the risks specific to them.
• Partner with engineering teams to drive remediation, turning recurring findings into guardrails, secure defaults, and paved paths.
• Investigate and respond to application security incidents, including root cause analysis and durable corrective action.
• Contribute to Unity's secure development lifecycle and to compliance work.

Skills

AppSec experience

Secure coding

Penetration testing

Cloud security

Secure architecture

Technical communication

Tools

AI tooling

Job description

Unity is seeking a Senior Application Security Engineer to lead threat modeling, secure design reviews, and code evaluation for Unity products and services across engines, editors, and cloud platforms. You will leverage manual techniques and AI-assisted tooling to identify and remediate risks.

You will collaborate with engineering teams across the US and EMEA, secure AI and agentic systems, and contribute to Unity's secure development lifecycle while turning findings into guardrails and secure