Security Engineer: AI & Threat Modeling & ERD Reviews

TechDigital Group; Seattle (WA); On-site; USD 140,000 - 200,000; Full time

Job summary

TechDigital Group in Seattle seeks experienced Security Engineers to support engineering security initiatives, focusing on security and privacy reviews, threat modeling, and third-party AI Agent security testing. You will work with engineering, security, privacy, and vendor teams to identify risks and provide remediation guidance.

The role emphasizes hands-on assessment, producing actionable findings and supporting repeatable security processes, including checklists, threat models, and

Qualifications

• 8+ years of professional experience in security engineering or related field.
• Experience reviewing complex technical designs and identifying security risks.
• Strong knowledge of threat modeling, vulnerability classification, risk modeling, authentication/authorization, least privilege, and data protection principles.
• Hands-on experience with security testing, vulnerability investigation, penetration/adversarial testing, or validating security controls.
• Ability to communicate technical findings clearly and collaborate directly with engineering, security, privacy, and third-party stakeholders.
• Preferred qualifications include experience assessing AI/LLM agents, prompt injection and unsafe tool use, privacy design reviews, cloud environments, and security automation using Python, Go, Bash, or similar languages.

Responsibilities

• Conduct security and privacy design reviews of services, applications, APIs, engineering proposals, and AI integrations; evaluate architecture, data flows, access controls, trust boundaries, and proposed safeguards.
• Perform threat modeling for critical services and AI agents, identifying attack surfaces, threat scenarios, potential attack paths, mitigations, and residual risk.
• Assess third-party AI agents through hands-on adversarial security testing, including prompt injection, tool misuse, data access, permissions, external integrations, excessive agency, and sensitive-data exposure.
• Document actionable findings, risk assessments, supporting evidence, and practical remediation guidance; partner with engineering and security teams through remediation and validation.
• Support repeatable security assessment processes, including review checklists, threat models, test cases, reporting templates, and AI-assisted/automation workflows where appropriate.

Skills

Security engineering

Threat modeling

Security testing

Communication of findings

AI/LLM security

Tools

Python

Go

Bash

Job description

TechDigital Group in Seattle seeks experienced Security Engineers to support engineering security initiatives, focusing on security and privacy reviews, threat modeling, and third-party AI Agent security testing. You will work with engineering, security, privacy, and vendor teams to identify risks and provide remediation guidance.

The role emphasizes hands-on assessment, producing actionable findings and supporting repeatable security processes, including checklists, threat models, and