Senior Game Integrity & Security Engineer

MrBeast; San Francisco (CA); On-site; USD 202,000 - 236,000; Full time

Benefits offered by this job

Competitive salary

Medical, Dental, Vision insurance

Company-paid Life Insurance

Health Savings Account (HSA)

401k with match

Flexible vacation & company holidays

Relocation assistance and housing for

Job summary

MrBeast is seeking a Senior Game Security & Integrity Engineer to own trust across large-scale live competitions. You will design scalable defenses for tournaments, ensure server-authoritative validation, and guard against cheating, fraud, and abuse in real-time environments.

You will collaborate with gameplay, platform, fraud, data, and incident-response teams to implement protections across mobile clients, backends, and telemetry, supporting events watched by hundreds of millions.

Qualifications

• 6+ years in game security, app security, anti-cheat engineering, fraud prevention, or mobile security.
• Strong software development skills in Python or TypeScript, with experience building backend services, detection tools, or automation.
• Deep understanding of API security, authentication/authorization, session management, and applied cryptography.
• Hands-on experience with mobile platform security: iOS/Android app hardening, attestation, root/jailbreak detection, or reverse engineering of mobile apps.

Responsibilities

• Design the integrity architecture for large-scale synchronous competitions: server-authoritative scoring, verifiable game outcomes, and tamper-evident result pipelines.
• Detect and prevent score injection, result forgery, replay attacks, and clock/latency manipulation in real-time brackets.
• Build defenses against multi-accounting, collusion, account sharing, and Sybil attacks on qualification and elimination rounds.
• Define fairness controls for prize-bearing events, including anomaly review workflows before payouts are released.
• Design client-side and server-side controls to detect bots, automation, input replay, memory manipulation, code injection, and modified or repackaged app clients.
• Implement and operate device attestation, root/jailbreak detection, emulator detection, and device fingerprinting.
• Review APIs, WebSocket services, and real-time protocols for tampering, replay, authorization, and abuse risks.
• Develop reusable security controls for rate limiting, session integrity, and transaction validation.
• Build systems to detect account takeover, payment and payout fraud, chargeback abuse, account farming, promotion abuse, and virtual-asset laundering.
• Protect prize disbursement: eligibility verification, geo/age restrictions on prize competitions, and coordination with KYC and payments teams on winner payouts.
• Triage and lead technical response to active exploits, cheating campaigns, fraud, and DDoS during live events, including real-time decisions on disqualification and event integrity.

Skills

Python

TypeScript

API security

Cloud (AWS/GCP/Azure)

Mobile security

Threat modeling

Incident response

Tools

Frida

objection

Ghidra

jadx

Job description

MrBeast is seeking a Senior Game Security & Integrity Engineer to own trust across large-scale live competitions. You will design scalable defenses for tournaments, ensure server-authoritative validation, and guard against cheating, fraud, and abuse in real-time environments.

You will collaborate with gameplay, platform, fraud, data, and incident-response teams to implement protections across mobile clients, backends, and telemetry, supporting events watched by hundreds of millions.