Senior Software Engineer, Gameplay (Bots) - League of Legends (Mandarin-Proficiency Required)

Location: Hybrid, based at the Los Angeles office; onsite 1–2 days per week.

Company

Riot Games develops League of Legends and other player-focused games and experiences.

What you will do

• Design, implement, and maintain gameplay systems using traditional game AI, machine learning technologies, and proprietary engine technologies.
• Build and integrate bot systems, gameplay services, and development tools for League of Legends.
• Collaborate with game designers, engineers, product partners, and global teams in Sydney and China to create compelling bot experiences.
• Own complex technical initiatives from design through delivery and contribute to architectural decisions.
• Improve engineering workflows through best practices, mentorship, code reviews, and technical collaboration.

Requirements

• 5+ years of professional experience in the game industry.
• 3+ years of C++ development experience in a production environment.
• Hands-on experience in Gameplay engineering or AI/Bots engineering.
• Interest in building and operating ML-powered applications, with willingness to learn model inference, deployment, and integration into game systems.
• Strong communication and collaboration skills across disciplines.
• Professional working proficiency in Mandarin for technical collaboration with international partners.
• Bachelor’s degree in Computer Science or a related field.

Nice to have

• Experience or interest in building machine learning applications, backend services for games, or data-driven decision making.
• Interest in full-stack engineering within game development.
• Experience with Unreal, Unity, or other commercial game engines.
• History of playing, actively playing, or a deep desire to play League of Legends.

Culture & Benefits

• Hybrid work environment with flexible work schedules.
• Open paid time off policy supporting work/life balance.
• Medical, dental, and life insurance.
• Parental leave for employees, spouses or domestic partners, and children.
• 401(k) with company match.
• Collaborative culture focused on player empathy, player-first decisions, and bringing diverse perspectives.