Principal Software Engineer, Engine & Tools - League of Legends (C++)

Location: Riot Games' office in Los Angeles, United States

Company

Riot Games develops player-focused games and entertainment experiences, including League of Legends, VALORANT, Teamfight Tactics, and Arcane.

What you will do

• Drive the architecture and evolution of League of Legends' core game engine.
• Design, build, and maintain reliable, scalable, and maintainable software systems and developer tools.
• Improve developer experience, reduce iteration time, and remove workflow friction across League development.
• Collaborate with designers, product managers, producers, QA, and engineers to scope, implement, and test features.
• Contribute to engineering excellence through code reviews, testing, documentation, design reviews, and process improvements.
• Mentor engineers and participate in the on-call rotation to resolve live incidents.

Requirements

• 8+ years of experience in game, game engine, and tools development.
• 5+ years of professional experience with C++.
• Deep expertise in building and architecting engine features and development tools.
• Experience shipping software at scale across multiple platforms.
• Experience applying AI to software development workflows and integrating AI-powered tools to improve productivity and code quality.
• Bachelor's degree in Computer Science or proven understanding of Computer Science fundamentals.

Nice to have

• Experience playing League of Legends.
• Strong interest in AI and its potential to improve game development workflows.

Culture & Benefits

• Player-first culture focused on collaborative decision-making and player empathy.
• Open paid time off policy and flexible work schedules.
• Medical, dental, and life insurance.
• Parental leave for employees, spouses or domestic partners, and children.
• 401(k) plan with company match.