Senior AI & Cloud Security Engineer (Onsite)

Cybersecurity Jobs; Sunnyvale, Seattle (CA, WA); On-site; USD 62,000 - 69,000; Full time

Job summary

Compest Solutions Inc is seeking an AI Security / Application Security Engineer for an onsite contract focused on securing applications, APIs, cloud services, and AI integrations. You will conduct security reviews, analyze architectures, model threats, and perform hands-on testing of AI agents to uncover vulnerabilities and provide remediation guidance.

The role requires 8+ years in security engineering or related fields, strong knowledge of threat modeling and data protection, and hands-on

Qualifications

• 8+ years of professional experience in security engineering, application security, product security, offensive security, systems architecture, or a related security field.
• Experience reviewing complex technical designs and identifying security risks in applications, APIs, cloud services, microservices, distributed systems.
• Strong understanding of threat modeling.
• Strong understanding of vulnerability assessment.
• Strong understanding of risk modeling.
• Strong understanding of authentication and authorization.
• Strong understanding of least-privilege principles.
• Strong understanding of data protection.
• Strong understanding of security architecture.
• Hands-on security testing, vulnerability investigation, penetration testing, adversarial testing, or security-control validation.
• Strong technical communication skills for explaining security findings to engineering and business stakeholders.

Responsibilities

• Conduct security and privacy design reviews for applications, APIs, cloud services, engineering proposals, and AI integrations.
• Review system architecture and data flows, including access controls, trust boundaries, authentication, authorization, and security safeguards.
• Perform threat modeling for critical services and AI agents, documenting attack surfaces, attack scenarios, attack paths, mitigations, and residual risks.
• Execute hands-on security testing and adversarial testing of AI/LLM agents, covering prompt injection, tool misuse, unsafe external integrations, excessive agency, unauthorized data access, permissions and access-control issues, and sensitive-data exposure.
• Identify, validate, and document security vulnerabilities, providing practical remediation recommendations.
• Partner with engineering, security, privacy, and third-party teams to drive fixes and validate implemented security controls.
• Create reusable security assessment assets including methodologies, checklists, threat models, test cases, and reporting templates.
• Support security automation and AI-assisted security workflows when applicable.

Skills

Security engineering

Application security

Threat modeling

Vulnerability assessment

Risk modeling

Authentication & authorization

Least-privilege

Data protection

Security architecture

Security testing

Technical communication

AI/LLM security

Tools

Python

Go

Bash

Job description

Compest Solutions Inc is seeking an AI Security / Application Security Engineer for an onsite contract focused on securing applications, APIs, cloud services, and AI integrations. You will conduct security reviews, analyze architectures, model threats, and perform hands-on testing of AI agents to uncover vulnerabilities and provide remediation guidance.

The role requires 8+ years in security engineering or related fields, strong knowledge of threat modeling and data protection, and hands-on