Senior Principal Architect : Ads Trust & Safety AI Platform

Microsoft Advertising is seeking a Senior Principal Architect to define and drive the next generation of the Ads Trust & Safety AI Platform. This role involves setting technical direction, shaping platform strategy, and building durable systems that protect users, advertisers, and partners.

Responsibilities

AI Platform Architecture and Technical Strategy

• Define the long-term architecture for the Ads Trust & Safety AI Platform.
• Translate Trust & Safety needs into reusable platform capabilities.
• Establish reference architectures, design principles, and technical standards.
• Drive architecture choices across latency, throughput, quality, cost, and operational safety.

Deep Research Agents and AI-Assisted Investigation

• Architect platform for Deep Research Agents to investigate domains, landing pages, and advertisers.
• Combine retrieval, crawling, structured evidence extraction, and LLM reasoning.
• Implement guardrails for agentic systems, including source provenance and confidence scoring.

Entity Intelligence, Decisioning, and Enforcement

• Architect systems for high-fidelity understanding of domains, websites, and advertisers.
• Design real-time, nearline, and batch scoring systems for policy enforcement and fraud detection.

Security, Risk, and Fraud Platform

• Detect and mitigate adversarial behavior across the advertiser lifecycle.
• Build sequential and event-based risk systems.

Cross-Microsoft Collaboration, Industry Learning, and Technical Leadership

• Collaborate across Microsoft teams to create shared platform capabilities.
• Evangelize a coherent Trust & Safety AI platform strategy.

Qualifications

• Bachelor’s Degree in Computer Science or related field and 15+ years of professional software engineering experience.
• 8+ years of senior technical leadership experience.
• Proven experience architecting large-scale production systems.
• Deep technical experience in AI/ML systems, agentic systems, or decisioning systems.

Preferred Qualification

• Experience in Trust & Safety, Fraud, Abuse, Risk, Security, or Ads Quality.
• Familiarity with Deep Research Agents, investigation agents, or retrieval-augmented generation systems.