Security Engineer

Ethereum Technologies; Sunnyvale (CA); On-site; USD 165,000 - 248,000; Full time

Job summary

Uber is seeking a contract Security Engineer in Sunnyvale, CA to proactively identify and reduce security and privacy risks across critical services, third-party platforms, and AI technologies.

You will review engineering proposals and ERDs, build automation to scale security assessments, and conduct hands-on adversarial testing of AI agents, partnering with engineering, security, and privacy teams to implement practical design improvements.

Qualifications

• 5+ years of professional security experience, incl. 3+ years in security engineering.
• Experience in security design reviews, threat modeling and privacy risk assessments.
• Hands-on penetration testing and secure software development or scripting.
• Familiarity with AI agent architectures and privacy risks.

Responsibilities

• Conduct ERD security and privacy reviews across apps, APIs, and cloud.
• Perform threat modeling to identify abuse paths and mitigations.
• Assess and test AI agents, including prompt injection and data access.
• Build security automation tools and AI-assisted workflows.
• Conduct targeted penetration testing of critical services and APIs.
• Drive remediation and share practical guidance.

Skills

Security design reviews

Threat modeling

Privacy risk assessments

Penetration testing

Automation of security workflows

AI risk familiarity

Technical communication

Independent cross-team collaboration

Education

Bachelor's or Master's in Computer Science or Cybersecurity

Tools

Scripting (Python/PowerShell)

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

As a contract Security Engineer on Uber’s Security Review Team, you will proactively identify and reduce security and privacy risks across critical services, third-party platforms, and emerging AI technologies. Your primary focus will be reviewing engineering proposals and ERDs, building automation to scale security assessments, and conducting hands-on adversarial testing of AI agents. You will partner with engineering, security, and privacy teams to turn findings into practical design improvements and reusable security controls.

What you’ll do:

• Conduct ERD security and privacy reviews: Evaluate engineering proposals, architecture, and data flows across applications, APIs, cloud infrastructure, and AI systems. Identify risks involving authentication, authorization, sensitive data handling, data minimization, retention, and third-party sharing.
• Perform threat modeling: Identify potential abuse cases and attack paths, recommend mitigations, and work with engineering teams to address risks before deployment.
• Assess and test AI agents: Evaluate third-party and internally developed coding and work-focused agents through adversarial testing. Examine prompt injection, tool use, permissions, data access, sensitive data exposure, and external integrations.
• Build security automation: Develop tools and AI-assisted workflows to streamline ERD reviews, threat modeling, evidence collection, and security testing, increasing assessment coverage and consistency.
• Conduct targeted penetration testing: Validate security assumptions and identify exploitable vulnerabilities in critical services, applications, APIs, and AI agents.
• Drive remediation and share knowledge: Communicate actionable findings, validate fixes, and develop guidance that helps teams prevent recurring security and privacy issues.

Required qualifications:

• 5+ years of relevant professional experience, including 3+ years in security engineering or a related security role.
• Experience conductingsecurity design reviews, threat modeling, and privacy risk assessments.
• Hands-on penetration testing experience and a strong understanding of application, API, cloud, and data security.
• Software development or scripting experience, with the ability to build tools and automate security workflows.
• Familiarity with AI agent architectures and risks involving prompt injection, tool execution, permissions, and data access.
• Strong written and verbal communication skills, including the ability to explain risks and recommend practical mitigations.
• Ability to work independently with minimal supervision and collaborate across engineering, security, and privacy teams.
• Bachelors or masters degree in computer science, cybersecurity, or a related field, or equivalent practical experience.

Preferred qualifications:

• Experience assessing AI agents, LLM applications, or third-party AI platforms.
• Experience building AI-powered security review or testing automation.
• Experience evaluating vendor security readiness and handling sensitive or business- critical data.
• Relevant security certifications, such as OSCP or CISSP.
• A passion for learning, teaching, and improving security practices.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.