Senior Security Engineer — Threat Modeling & AI Security

Talentify; Seattle (WA); On-site; USD 140,000 - 190,000; Full time

Job summary

Diverse Lynx LLC is seeking Security Engineers to support Engineering Security initiatives, focusing on security and privacy reviews, threat modeling, and third‑party AI agent security testing. The role involves hands‑on assessments and remediation guidance across engineering, security, privacy, and vendor teams.

Positions require 8+ years in security engineering, with on‑site work in Seattle or Sunnyvale. You will conduct design reviews, model threats, test AI integrations, and help build

Qualifications

• 8+ years of professional experience in security engineering or related fields.
• Experience reviewing complex designs and identifying security risks in applications, APIs, cloud services, microservices or distributed systems.
• Strong knowledge of threat modeling, risk assessment and data protection principles.
• Hands-on security testing and vulnerability investigation experience.
• Ability to clearly communicate findings and collaborate across engineering, security, privacy and third-party teams.
• Preferred experience includes AI/LLM agent security, prompt injection, cloud environments, and security automation using Python/Go/Bash.

Responsibilities

• Conduct security and privacy design reviews of services, applications, APIs, engineering proposals, and AI integrations; evaluate architecture, data flows, access controls and safeguards.
• Perform threat modeling for critical services and AI agents, identifying attack surfaces, threat scenarios and mitigations.
• Assess third-party AI agents through hands-on adversarial security testing, including prompt injection and data access risks.
• Document actionable findings, risk assessments and remediation guidance; partner with engineering and security teams through remediation and validation.
• Support repeatable security assessment processes, including checklists, threat models, test cases and reporting templates.

Skills

Threat Modeling

Penetration Testing

AI/LLM Security

Cloud Security

Python

Go

Bash

Communication

Security Reviews

Job description

Diverse Lynx LLC is seeking Security Engineers to support Engineering Security initiatives, focusing on security and privacy reviews, threat modeling, and third‑party AI agent security testing. The role involves hands‑on assessments and remediation guidance across engineering, security, privacy, and vendor teams.

Positions require 8+ years in security engineering, with on‑site work in Seattle or Sunnyvale. You will conduct design reviews, model threats, test AI integrations, and help build