Senior Security Engineer, Internal Audit

Overview

Amazon's Internal Audit Security team is seeking a Security Engineer III to join our mission of protecting customer data and keeping Amazon secure. You will operate as a security lead, partnering with world‑class engineering teams to uncover vulnerabilities, design novel abuse scenarios, and assess large‑scale security solutions across Amazon's products, services, and infrastructure.

• Lead independent security audits of Amazon systems, services, and infrastructure to assess whether security controls are effective
• Identify security risks through penetration testing, design reviews, threat modeling, and code analysis
• Investigate security control failures – determine why preventive or corrective controls didn't work, and drive root‑cause resolution across team boundaries
• Assess security controls around Amazon's adoption of AI/ML technologies – including model access, training data protection, output integrity, and integration into development workflows – to ensure they result in secure customer experiences
• Build reusable security frameworks, runbooks, and rubrics that enable the team to assess new problem domains repeatably and at scale
• Communicate security risk findings and recommendations clearly to technical teams and senior leadership
• Mentor and develop other security engineers; lead engagements requiring coordination across multiple engineers and teams

Internal Audit Security executes independent assessments of the efficacy of Amazon's layered security controls. We prioritize security assessments of systems and processes that may impact foundational technologies, human safety, privacy and durability of customer data, and financial systems. We believe active tests are required to assess complex environments and emphasize custom tooling to enable safe operation at scale.

• 5+ years of industry-based experience in security vulnerabilities identification, attack patterns, and remediation techniques (non‑internship) experience
• Bachelor's degree in Computer Science or a related field
• 5+ years of (non‑internship) scripting, programming, and security code review in common programming languages experience
• Knowledge of at least two of the following programming languages:
  Scala, Java, Python, C/C++, or Go
• Experience as a mentor, tech lead or leading an engineering team
• Experience using standard security assessment and penetration testing tools such as Burp Suite, Metasploit, and IDA Pro
• Experience working directly with security and engineering teams
• Experience in written and verbal communication with the ability to present complex technical information in a clear and concise manner to executives and non‑technical leaders
• Demonstrated ability to construct reusable security frameworks, runbooks, or rubrics for complex problem domains

• Domain expertise in at least three of: security architecture and engineering, communication and network security, identity and access management (IAM), security assessment and testing, cryptography, software development security, and reverse engineering
• Vulnerability research experience with complex software and hardware components
• Cloud computing (AWS), virtualization, containerization architecture knowledge
• Experience identifying and driving centralized security controls at the organization or company level
• Experience with microservices, APIs, and distributed systems
• Strong data analysis abilities to derive insights from security signals
• Track record of mentoring or coaching security engineers
• Experience resolving root causes of systemic security problems across team boundaries
• Participation in bug bounty programs
• Experience building scalable, reusable security frameworks and tools
• Web service assessment experience with authentication controls, session management, access controls, logic flaws, injection vulnerabilities, request smuggling, cloud privilege escalation, DOS attacks
• Experience using boto3
• Experience leveraging AI/ML tools to enhance security testing, code analysis, or audit workflows
• Demonstrated ability to navigate ambiguity, make tough technical decisions, build consensus across teams, and drive long‑term security initiatives with measurable risk reduction

Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for supplemental life plans, EAP, mental health support, medical advice line, flexible spending accounts, adoption and surrogacy reimbursement coverage), 401(k) matching, paid time off, and parental leave.

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.