William Wang

Engineer on Azure CosmosDB MongoDB Team, building the Virtual Core MongoDB service.

• Owned and shipped the Data API, a RESTful, HTTPs interface for MongoDB clusters, a RESTful, HTTPs interface that streamlines customer connection to MongoDB clusters, in both C# and Rust Gateways.
  • • Designed and developed the embedded request handler, dynamic server-load balancers, plain authentication mechanism, control plane elements, telemetry, and more.
  • • Supervised efficient customer rollout, after testing thoroughly in all cluster environments.
  • • Worked with support engineers to build the PowerBI Connector with Data API, allowing customers to query MongoDB data directly from PowerBI.
  • Data API GA Announcement →
• Co-owned and developed the PG DocumentDB Gateway, a memory-safe, low-latency bridge for MongoDB clusters.
  • • Developed user CRUD operations, BSON request handler, HTTPs interface, verbose logging system, and more.
  • • Worked on cursor, sessions, and transaction management systems.
  • Open Sourced Rust Gateway →
• Co-owning and developing Full RBAC (Role-Based Access Control) for MongoDB clusters, allowing customers to create, manage, and delete custom roles.
  • • Developed User CRUD operations for the open-source Gateway.
  • • Developed and designed role privilege system and username/password constraints for the open-source Engine.
  • • Developed and designed the Connection Status command, allowing customers to view authenticated users and their roles.
  • Open Sourced Engine →
• Assisted with the development of read-only users, release validation pipeline, and Entra ID authentication.

Research Assistant at The Wu Lab.

• Developed a full-stack web application aimed at enhancing the accessibility and usability of data governance tools.
• Engineered an end-to-end solution enabling administrators and analysts to upload data, execute queries, and visualize data lineage.
• Implemented core governance features including auditing capabilities, compliance tracking mechanisms, privacy controls, and role-based access control.
• Focused on empowering administrators to manage databases and analysts effectively while ensuring the protection of end-user data.

Engineer on Azure CosmosDB Backend Team, focusing on vectorization algorithms and database indexes.

• Developed high-performance AVX SIMD Cosine & Normalized Cosine Distance functions:
  • • Achieved 82.3% and 89.1% time reductions in benchmarks
  • • Implemented solutions using Rust and C++ in CosmosDB's DiskANN repository
• Built CosmosDB's first e2e vector index with multiple distance functions:
  • • Implemented L2, Cosine, Normalized Cosine, & Inner Product functions
  • • Created 4 test suites with 50+ scenarios
  • • Achieved 31.2% and 29.1% reductions in query and storage times
• Spearheaded early-stage VectorDB initiative and created OpenAI embeddings utility

Engineer on Intune R&D, focusing on Apple device enrollment systems.

• Engineered Apple enrollment capabilities for Microsoft Intune:
  • • Enabled 1,000,000+ tenants to manage 500,000+ macOS devices
  • • Developed UI components and Graph processing systems
  • • Enhanced data warehouse performance
• Led cross-functional collaboration with Apple's API team and internal teams
• Managed scrum meetings with PMs and delivered production-ready service

Engineer on Intune R&D, working on Win32 application systems.

• Developed the Win32 application analyzer/collector:
  • • Engineered three scalable, map-based solutions in C#
  • • Enabled comprehensive application details collection across all machines
  • • Implemented tenant administrator access and storage systems
• Conducted thorough analysis of solutions:
  • • Performed time, space, and Azure-resource cost analysis
  • • Collaborated with teams to assess solution efficacy
  • • Successfully merged implementations across multiple Intune codepoints

• Engineer and Program Manager on MMD; collaborated with engineers, PM's and designers to develop an innovative, comprehensive KPI dashboard for executives in the Microsoft Security organization.
• Leveraged HTML, CSS, JavaScript, React, and Angular.js for front-end with Kusto and CosmosDB for back-end; established a flexible, dynamic feedback loop with executives, ending the summer with a 97% approval rating.
• Performed project manager duties; designed creative mockups with Figma, mediated ideas between multidisciplinary executives, wrote product requirement documents (PRDs), and represented project in scrum meetings.

Fu Foundation School of Engineering & Applied Science

Earned Economics & Engineering degree (3+2 Program) before transferring to Columbia University.