Staff Mobile & Product Security Engineer

MrBeast

. Embed with mobile and product squads across the membership app, marketplace, data, and identity to threat-model, review, and harden features before release .

Posted 10/8/2026full-timeRemote • United StatesLead💰 $178,000 - $268,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in mobile application security, including secure SDLC, pen testing, and architecting security controls. Proficient in coding for mobile platforms and implementing security standards for consumer applications at scale.

Highest-signal resume keywords

Mobile Application Security Program OwnershipPenetration Testing for Mobile and Web ApplicationsSecure Mobile SDLC ImplementationExperience with Swift, Kotlin, and React NativeArchitecting Against Partner Security Frameworks

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mobile Code ReviewThreat ModelingStatic/Dynamic AnalysisReverse EngineeringAPI Security ReviewDependency and Supply-Chain ControlsInsecure IPC UnderstandingMobile API Abuse KnowledgeCoding AgentsModel and Prompt Security

Tools & Technologies

Security ToolingPaved-Road PracticesZero-to-One AI-Native Stack

Industry Keywords

SOC 2PCIVendor Security ReviewsMobile App Store Security RequirementsConsumer Product Security

Tech Stack

Tools & technologies

AndroidiOSKotlinReactReact NativeSDLCSwift

About the role

Key responsibilities & impact

Embed with mobile and product squads across the membership app, marketplace, data, and identity to threat-model, review, and harden features before release
Own the mobile application security program, including secure mobile SDLC, mobile code review, dependency and supply-chain controls, and developer-facing security tooling
Own the broader product application security program, including secure-by-default patterns, API and backend security review, and paved-road tooling
Run the end-to-end pen testing program across mobile, web, and APIs; coordinate external engagements and drive remediation
Architect security controls and documentation to meet partner security requirements
Set the security baseline for a zero-to-one AI-native stack, including coding agents, model and prompt security, and mobile AI features
Create mobile and product security standards, guardrails, and paved-road practices for organizational scale
Build secure membership ecosystem products spanning native mobile apps, web clients, and backend platform services for 100M+ users

Requirements

What you’ll need

Experience as a security engineer embedded on a product or mobile team
Ability to write code, file PRs, and ship fixes
Experience securing native iOS and/or Android applications at consumer scale
Understanding of reverse engineering, tampering, insecure storage, insecure IPC, and mobile API abuse
Experience running or heavily contributing to an application security program for a consumer product used by millions
Ability to pen test mobile and web applications, including on-device and API-level mobile vulnerabilities
Experience architecting against partner security frameworks or equivalents, including SOC 2, PCI, vendor security reviews, or mobile app store security requirements
Experience with coding agents, model and prompt security, and on-device/mobile AI features
Startup experience building from zero with a nimble team and big-tech exposure at massive scale
Mobile-specific code review experience with Swift, Kotlin, and/or React Native
Experience with static/dynamic analysis, binary/reverse engineering, API abuse, threat modeling, secure SDLC, dependency and supply-chain controls, API/backend security review, and security tooling

Benefits

Comp & perks

Competitive Salary
Generous Medical (Blue Cross Blue Shield), Dental, Vision and company-paid Life Insurance
Company contributions to employee Health Savings Accounts (HSA)
401k Plan with Safe Harbor company-matching
Flexible vacation policy and paid company holidays
Company-provided technology package
Relocation assistance where applicable, including travel and company-provided housing for the first 90 days
Bonus
Equity