iOS & macOS Security Engineer

Stripe is a financial infrastructure platform for businesses, aiming to increase the GDP of the internet. The iOS & macOS Security Engineer will work on securing client endpoints, collaborating with various teams to enhance security measures and support mobile expansion initiatives.

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