I’m William, a senior software engineer who’s built and scaled systems at AWS, Google, Zoom, and startups. I love solving tough backend problems, shipping full‑stack features, and helping teams move faster with confidence.

I’m William, a senior software engineer who’s built and scaled systems at AWS, Google, Zoom, and startups. I love solving tough backend problems, shipping full‑stack features, and helping teams move faster with confidence.

Available to hire

I’m William, a senior software engineer who’s built and scaled systems at AWS, Google, Zoom, and startups. I love solving tough backend problems, shipping full‑stack features, and helping teams move faster with confidence.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Work Experience

Senior Software Development Engineer III at Amazon Web Services
August 1, 2023 - August 1, 2025
Contributed to AWS Kiro, an AI-driven IDE that turns natural-language specifications into production-ready code; designed and implemented a dual sync strategy for developer projects (incremental change detection for Git-based repos using commit history and working-tree diffs, and manifest-based uploads with content hashing for non-Git projects); architected a virtual storage framework organizing projects by account and project hierarchy with secure multi-tenant provisioning and removal policies based on lifecycle, retention, and compliance; scaled backend for a developer platform with multi-layer caching, per-tenant rate limiting, and autoscaling—reducing p95 latency by ~40%, doubling peak throughput, and sustaining 99.9%+ availability under 5× traffic growth; collaborated cross-functionally with frontend, platform, and ML teams to deliver integrated features and ensure a seamless user experience.
Senior Fullstack Engineer at Layer Health
March 1, 2022 - July 1, 2023
Built a greenfield AI-driven healthcare platform; established CI/CD pipelines and cloud-based infrastructure to enable rapid, reliable releases; built a clinical data pipeline to ingest EHR/claims and unstructured notes, standardizing to FHIR/Parquet, de-identifying PHI, enforcing schema/quality checks, and delivering validated feature tables to the ML pipeline with reliable SLAs; designed and implemented an internal dashboard to monitor data pipeline and provide real-time visibility into ingestion progress, validation results, and operational controls for rapid issue resolution.
Senior Software Engineer at Google
August 1, 2016 - February 1, 2022
Contributed to end-to-end development of Google Meet, building scalable real-time video conferencing features across web and backend systems; contributed to system architecture design, owning the scheduling service with calendar integration and real-time notifications; scaled infrastructure to meet surging global demand during COVID-19 and delivered features like screen recording, live captions, and expanded participant capacity; helped evolve Google Meet into an enterprise-grade, globally scalable platform.
Software Engineer at Zoom
February 1, 2013 - June 1, 2016
Joined Zoom in its early startup phase and contributed during a period of rapid growth; developed and optimized a browser-based meeting application, implementing WebRTC, WebSockets, and custom signaling for audio/video streaming and chat; added features like breakout rooms, scheduling, polling, live reactions, and multi-language support; reduced initial load times and memory usage for large meetings.

Education

Master of Computational and Applied Mathematics at Massachusetts Institute of Technology
January 11, 2030 - January 1, 2014
Bachelor of Computer Science at Rice University
January 11, 2030 - January 1, 2012

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Healthcare