Client Platform Security Engineer

Stripe is a financial infrastructure platform for businesses, aiming to increase the GDP of the internet. The Client Platform Security Engineer will work at the intersection of software development, security, and client platform engineering to enhance the security of Stripe's endpoints and ensure compliance with rigorous security standards.

Responsibilities:

• Contribute to the secure design and implementation of Stripe’s mobile expansion initiative
• Act as the subject matter expert on iOS security by advising partner teams on iOS security best practices and secure-by-design architectures
• Design, build and maintain Stripe’s endpoint security software. This includes developing telemetry and prevention capabilities via macOS system extensions that run on all Stripe macOS devices
• Collaborate closely with partner teams to define and measure the secure configuration of Stripe’s client platforms (macOS, iOS/Android, ChromeOS)
• Operate high RPS backend services providing critical controls and security configuration to Stripe endpoints
• Drive down usage of unapproved, untrusted software while creating a surprisingly great user experience for onboarding new, approved software
• Manage and improve device attestation flows to ensure Stripe’s device and user identities are kept secure
• Identify opportunities on Stripe client platforms to improve our security posture and resiliency against malware and advanced persistent threats
• Build and maintain a users-first data loss prevention program to protect against accidental and malicious data exfiltration

Requirements:

• 4+ years of relevant experience securing iOS and/or macOS platforms
• 4+ years of software engineering experience writing Go, Swift or Objective-C
• Deep expertise securing devices within the Apple ecosystem
• Understanding of the current threat landscape and how to defend Apple devices against modern threats
• High standards for code quality and a constructive attitude to help others raise the bar
• An ability to think creatively and holistically about reducing risk in a complex environment
• The ability to drive clear next steps when encountering ambiguous spaces without clear lines of ownership
• Empathy, strong communication skills and a deep respect for the power of collaboration
• Experience implementing endpoint detection and response software
• Knowledge of macOS or iOS internals and how they can be used to build security controls and software
• Exposure to data loss prevention strategies
• Ability to develop backend networked applications capable of handling a high number of requests
• General proficiency in securing client devices
• Understanding of topics such as platform hardening, malware detection, and endpoint management through configuration as code
• Understanding of networking protocols across various levels of the stack + TCP, DNS, SSH, TLS, HTTP
• Linux system administration knowledge
• Additional experience securing alternative platforms including Windows and Android
• Experience working with AWS cloud services