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Junyu Wang

Senior Software Engineer

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About Me

I am a seasoned Software Engineer specializing in AI-driven ad selection, ranking systems, and large-scale distributed computing. With extensive experience in Microsoft Ads, I have designed and led high-performance, revenue-driving ad platforms that scale to hundreds of thousands of queries per second while ensuring low latency and cost efficiency.At Microsoft, I have led cross-functional teams to develop cutting-edge ad selection and ranking systems, integrating Large Language Models (LLMs) to enhance personalization and user engagement.

Experience

Microsoft

Senior Software Engineer

  • Designed and developed core services for the Microsoft Ads Selection and Ranking Platform—the foundation of Microsoft’s Ads ecosystem—leveraging C++ to build high-performance, distributed computing infrastructure for real-time ad selection and feature extraction at scale.
  • Engineered scalable distributed systems for ad selection and ranking, handling 350,000+ QPS with sub-80ms latency, ensuring seamless ad delivery across Microsoft's ad network.
  • Led cross-functional collaboration with engineering, science, and product teams, shaping Ads serving strategies, driving roadmap prioritization, and optimizing serving stack to enhance ad relevance and revenue growth.

Intelligent Medical Objects

Software Engineer

  • Created and maintained automated testing scripts and tools, designed and developed database-centric applications with optimized data structures, procedures, and scripts. Collaborated in full lifecycle application development within Agile, Scrum-oriented, test-driven environments.

Latitude Learning

Software Development Engineer

  • Designed, developed, and tested multi-tier components (presentation, business, data layers) for a deployed LMS using VB.NET, ASP.NET, C#, and Microsoft SQL Server. Created custom reports with Crystal Reports and SSRS and handled UI and mid-tier development for web-based business applications.

Grupo HDI

Software Development and QA Engineer

  • Results-driven Quality Assurance professional with solid knowledge in software test automation and extensive experience in software development methodologies including both Agile and Waterfall models.

Education

University of Dayton

Sept 2011 - December 2013

Master of Computer Science

GPA: 3.90/4.00

Selected Courses: Algorithm and Programming (C++), Discrete Event Simulation, Data Structure and Algorithm, Database Management, Data Communication, Operation System, Database Management System, Mobile Application Development (Apple IOS, Objective-C), Object-Oriented System Development (Java Web Development), Algorithm Design, Artificial Intelligence

Tianjin Normal University

Sept 2007 - July 2011

Bachelor of Management in Information Management and Information System

GPA: 3.55/4.00

Projects

Microsoft AI Personalized Ads

With no keyword requirement, Microsoft AI dynamically creates personalized ads.

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Microsoft Ads for Copilot

Multi-Intent and Multi-Placement Ads Selection and Ranking for Microsoft Copilot

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Microsoft Feed-Based Ads

The Microsoft Audience Network is a native advertising solution similar to Facebook Ads (FAN) and the Google Display Network, powered by the Microsoft Graph and Artificial Intelligence.

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Skills

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