Staff Mobile Security Engineer

MrBeast

. Own device and session integrity, including attestation, session enforcement, and authentication hardening across native mobile clients and backends .

Posted 10/13/2026full-timeRemote • California • United StatesLead💰 $205,000 - $256,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in security engineering, focusing on defending consumer-scale mobile products against account takeover and fraud. Proven ability to lead teams, design security roadmaps, and implement robust detection systems across mobile and backend infrastructures.

Highest-signal resume keywords

Security EngineeringFraud Detection SystemsMobile Client InternalsGo ProgrammingTeam Leadership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Security Domain OwnershipSystems DesignDetection PipelinesAttestation SystemsAccount Takeover DefenseBot Abuse PreventionProduction Code Writing

Soft Skills

MentoringTechnical Direction

Tools & Technologies

AWSCloud Provider

Industry Keywords

Consumer ProductsFintechSession IntegrityAuthentication HardeningUser Trust

Tech Stack

Tools & technologies

AndroidAWSCloudiOSGo

About the role

Key responsibilities & impact

Own device and session integrity, including attestation, session enforcement, and authentication hardening across native mobile clients and backends
Design and run abuse and fraud detection/enforcement systems against adaptive bad actors across consumer and fintech surfaces
Define the multi-quarter security roadmap for account integrity and abuse defense
Balance user trust, growth, and risk
Lead and grow a team of mobile and backend engineers
Set the technical bar, review designs, and mentor engineers
Write production code and establish technical direction

Requirements

What you’ll need

8 to 10+ years in security engineering, with deep experience defending consumer-scale mobile products against account takeover, bot abuse, and fraud
Proven ownership of an end-to-end security domain, including roadmap, team, and outcomes
Strong systems design experience building server-authoritative detection pipelines, attestation systems, or similar adversarial-facing infrastructure at scale
Hands-on experience across native mobile (iOS/Android) client internals and distributed backend services
Proficiency in Go or similar on a major cloud provider; AWS preferred
Experience leading engineers formally or as a tech lead across disciplines

Benefits

Comp & perks

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