Senior Software Engineer, Machine Learning

Responsibilities

• Lead the architecture and implementation of a next-generation, agent-native, AI-powered business applications platform for Roku's advertising business.
• Define the technical architecture and overall stack for platforms spanning pricing guidance, booking intelligence, and revenue forecasting.
• Evaluate LLMs, multimodal systems, and multi-agent orchestration frameworks for product use.
• Design and build end-to-end pipelines from business signals to model inference, recommendation generation, and output validation.
• Build production-grade systems with strong error handling, explainability, and human-in-the-loop guardrails for high-stakes financial decisions.
• Partner cross-functionally with ML, backend, frontend, data, and business teams to iterate on product quality and scalability.

Requirements

• Bachelor's degree in Computer Science or a related field.
• Experience building recommendation or decisioning systems, ideally in advertising, media, or revenue-platform environments.
• Strong understanding of modern LLMs and agentic systems, including prompting, tool use, and orchestration.
• Experience deploying ML systems in production, including model serving, containerization, CI/CD, and monitoring.
• Proficiency in Java or Python.
• Hands-on experience with modern ML frameworks such as PyTorch, Hugging Face, or agent orchestration frameworks like LangGraph.

Preferred Qualifications

• Startup or founding-engineer experience, or experience leading fast-moving Gen AI initiatives.
• Experience owning a business-facing or self-serve product from architecture through production deployment.
• Deeper background in pricing optimization, demand forecasting, or churn modeling.
• Experience improving inference cost and latency and building responsible AI guardrails.

Benefits

• Comprehensive benefits including healthcare (medical, dental, and vision), life, accident, disability, and retirement options.
• Global access to mental health and financial wellness support and resources.
• Flexible hybrid work approach with in-office collaboration Monday through Thursday.

About the Company

Roku is the leading TV streaming platform in the US, with a mission to connect the entire TV ecosystem by helping consumers discover content, enabling publishers to grow audiences, and giving advertisers powerful ways to engage viewers.