Senior AI Platform Engineer - Build Trusted, Scalable AI

QXO, Inc; Seattle (WA); On-site; USD 138,000 - 235,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with employer match

PTO and company holidays

Paid training and certifications

Legal assistance and identity protects

Pet insurance

Employee assistance program (EAP)

Job summary

QXO, Inc. in Seattle seeks a Senior AI Engineer, Platform to own scalable AI services across the data platform.

You will ensure reliable, fast, and cost-effective AI workflows, ground responses in trusted data, and enforce access controls across all AI processes. You\'ll partner with engineering teams to provide a solid foundation for building AI agents and maintain high quality through production monitoring and testing.

Qualifications

• 5+ years backend engineering experience building and operating production software.
• Experience with agentic workflows on large language models, including agents, retrieval systems, and tool-calling workflows.
• Experience with online and offline evaluation of agentic solutions, including building test sets, automated grading, quality monitoring, and acting on the results.
• Strong Python, including production services used by other engineering teams.
• Ownership of production systems, including deployment, monitoring, and on-call support.
• Working knowledge of access control and the handling of sensitive data.
• Demonstrated, effective use of AI-assisted development tools, with accountability for the quality of their output.
• A degree in computer science or a related field, or equivalent practical experience.

Responsibilities

• Make the platform's AI services reliable, fast, and cost-effective as usage grows across the business.
• Ground AI responses in trusted business data and approved metric definitions, so answers match the figures the business already reports.
• Continuously measure and improve AI quality, catching regressions before they reach users.
• Ensure access controls hold consistently across every AI workflow.
• Give engineering teams across QXO a dependable foundation for building their own AI agents.

Skills

Backend engineering

Agentic workflows

Python

Production systems ownership

Access control

AI development tools

Quality monitoring

Communicate/ownership

Education

Degree in computer science or related field

Tools

LangChain

LangGraph

Job description

QXO, Inc. in Seattle seeks a Senior AI Engineer, Platform to own scalable AI services across the data platform.

You will ensure reliable, fast, and cost-effective AI workflows, ground responses in trusted data, and enforce access controls across all AI processes. You\'ll partner with engineering teams to provide a solid foundation for building AI agents and maintain high quality through production monitoring and testing.