Senior Anti-Cheat Engineer - Central Technology, Anti-Cheat
Riot Games · Los Angeles, USA
About this role
**Riot Anti-Cheat Engineers** are versatile and passionate about protecting the integrity of multiplayer games. The goal is to promote the best player experience by defending the legitimacy of Riot’s favorite games. As a **Senior Anti-Cheat Engineer**, you’ll help develop and evolve **Vanguard Anti-Cheat’s client services**, working across **user-mode, kernel-mode, and obfuscation tooling**. You’ll primarily use **C/C++** and **x86/x64 assembly** to build new anti-cheat features, improve security and reliability, and debug complex behavior across the **Windows stack**. You’ll also reverse engineer emerging cheats (including packed/obfuscated binaries) and translate findings into practical **detections, mitigations, and preventative controls**. **Responsibilities** - Identify and drive high-impact anti-cheat features from ambiguity to production across user-mode, kernel-mode, and obfuscation tooling surfaces - Move fast to turn emerging threats into resilient detections or preventative countermeasures deployable at scale - Design and develop capabilities that anticipate cheaters’ next moves or eliminate common abuse vectors - Reverse engineer highly evasive cheats and OS manipulation techniques - Investigate and resolve complex compatibility issues in opaque environments - Support game teams directly in understanding cheating ecosystems and integrating Anti-Cheat **Required Qualifications** - Proficient in **C/C++** and **x86/x64 assembly** - Experience building and debugging low-level, security-sensitive systems - Strong understanding of **Windows process internals**, including process/thread lifecycles, virtual memory, handles/objects, security contexts, executable image formats, DLL loading, and the Windows loader - Hands-on reverse engineering experience, including analyzing packed/protected/obfuscated binaries and identifying techniques used to conceal or manipulate runtime behavior - Practical understanding of the **Windows kernel and driver model**, with demonstrated experience developing, debugging, and maintaining production-grade kernel-mode drivers **Desired Qualifications** - Hands-on experience in cheat-development or game-security research communities, with practical knowledge of modern cheat techniques and anti-cheat evasions - Familiarity with advanced evasion techniques involving hypervisors, DKOM, EPT manipulation, vulnerable drivers, or hardware-assisted cheats - Knowledge of runtime integrity verification, behavioral detection, client attestation, and other signature-less anti-cheat techniques *Success in this role is driven by craft expertise, collaboration, and decision-making that prioritizes player delight. Riot will evaluate your past studies, experience, and your personal relationship with games.* **Our Perks** - Work/life balance with open paid time off and flexible work schedules - Medical, dental, and life insurance; parental leave - 401(k) with company match - Benefits details available on Riot’s benefits pages *Riot is an equal opportunity employer and provides reasonable accommodations. Job duties may evolve based on business needs and additional responsibilities may be assigned as necessary to maintain operational efficiency and security.*
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