Staff ML Engineer — Real-Time RL for Games

Riot Games; Los Angeles (CA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Life insurance

Parental leave

401k with company match

Flexible work schedules

Job summary

Riot Games is seeking a Staff Machine Learning Engineer to own strategy, design, and implementation of ML capabilities for an unpublished R&D game project in Los Angeles. You will work with developers, designers, and data scientists to plan, implement, and maintain ML-driven solutions that enhance player experiences.

You will report to the Engineering Manager within the R&D game project. You will lead reinforcement learning initiatives, build production pipelines, and balance cutting-edge

Qualifications

• 6+ years of experience delivering ML systems in production, including 3+ years in applied modeling or ML research roles
• Experience with reinforcement learning and applying RL to production problems
• Experience in production environments with interacting models and downstream consequences
• Proficiency with modern ML libraries and frameworks (PyTorch, TensorFlow, pandas)
• Experience collaborating across disciplines
• Proficiency in Python or similar languages
• BS in CS or equivalent

Responsibilities

• Identify and define improvement opportunities with cross-disciplinary teams
• Refine modeling and feature strategy for RL techniques
• Establish reusable training and evaluation pipelines
• Drive ML/RL systems to improve decision-making and adaptation
• Establish research-to-production practices with reliable code quality and testing
• Guide experiment design and measure model impact
• Define reliability standards with design and engineering
• Mentor engineers and other disciplines with documentation and reviews
• Identify risks and propose pragmatic solutions

Skills

Reinforcement learning

Python

PyTorch

TensorFlow

Pandas

C++

Education

B.S. in Computer Science or equivalent experience

Tools

Containers

ML cloud services

Model telemetry

Job description

Riot Games is seeking a Staff Machine Learning Engineer to own strategy, design, and implementation of ML capabilities for an unpublished R&D game project in Los Angeles. You will work with developers, designers, and data scientists to plan, implement, and maintain ML-driven solutions that enhance player experiences.

You will report to the Engineering Manager within the R&D game project. You will lead reinforcement learning initiatives, build production pipelines, and balance cutting-edge