Written in a personal capacity. Also available as a PDF.

Software Engineer | Google | July 2025 - Present

  • Google Cloud AI: improving reliability, scaling, security, and error handling for the infrastructure serving Gemini and other models.
  • Previous project: supporting Google Cloud Dedicated, Google’s sovereign cloud offering for European customers, including reliability-monitoring infrastructure adopted by peer teams.
  • Java readability mentor.

Member of Technical Staff | OpenAI | August 2024 - April 2025

  • Security engineering on the internal access-management platform: observability, reliability, and performance.
  • Automated identity-hygiene and compliance checks; intermittent on-call for company-wide security support.

Senior Software Engineer (L6 / SDE III) | Amazon Web Services | November 2022 - August 2024

  • Led strategy and guided implementation for attribute-based access control (ABAC) across the AWS Identity platform, serving 600+ integrating teams.
  • Used an early version of Claude on Bedrock to find integration errors across consumer teams at a scale static analysis couldn’t reach, before LLM code analysis was a product category.
  • Cut on-call load by automating issue resolution and moving configuration to code; contributed to identifying and resolving zero-day exploits.

Staff Software Engineer (IC4) | Twilio | July 2021 - October 2022

  • Led the organization-wide modernization of Twilio’s core billing and usage platform, including its migration to Amazon Aurora MySQL — written up on the AWS Database Blog.
  • Tightened internal access controls around highly sensitive billing data to reduce insider risk, and kept PCI-DSS compliance intact through the migration.

Software Development Engineer (L5 / SDE II) | Amazon | July 2019 - July 2021

  • Designed and built microservices on the Amazon.com retail stack, focused on protecting customer PII and staying available through peak events (Prime Day, holiday traffic).

Software Engineer (L3, promoted to L4) | Google | December 2015 - June 2019

  • Payments compliance engineering: sanctions screening, AML risk scoring that unblocked product launches in new markets, and a customer-tiering service designed as an L3 that is still in production a decade later.
  • Automated document requests for sanctions reviews, cutting manual review volume by more than half and raising customer response rates by double digits.
  • Took over a Street View imagery quality-control tool mid-project when its tech lead departed; built the entire frontend solo and launched it to the global operations team reviewing incoming imagery.
  • Java readability granter (65+ reviews granted).

Software Developer | Trifecta Technologies | December 2014 - December 2015

  • Salesforce consulting: full-stack e-commerce and operations systems (Apex, Lightning, SOQL) for enterprise clients on tight deadlines.

Software Developer | Right Reason Technologies | 2011 - December 2014 (part-time through college, full-time in 2014)

  • eLearning platform: built a drag-and-drop workflow editor for automated grading, maintained reporting subsystems, improved database query performance.

Research Assistant | The University of Texas at Dallas | June 2012 - August 2012

Publications#

W. E. Wong, T. Gidvani, A. Lopez, R. Gao, and M. Horn, “Evaluating Software Safety Standards: A Systematic Review and Comparison,” in 2014 IEEE Eighth International Conference on Software Security and Reliability-Companion, San Jose, CA, 2014, pp. 78-87. doi.org/10.1109/SERE-C.2014.25

Education#

Bachelor of Science, Computer Science | Muhlenberg College | 2010 - 2014

Minors in Mathematics and Music Theory. Recipient of the Dr. Anthony J. Marino Jr. Award in Computing Science (2013).

Contact#

matt [at] matthorn [dot] io