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Diana Mendoza

@dianamendoza

Senior Software Engineer at Meta who productionized transparency logging for AI workflows and secured Instagram account recovery.

United States
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At Meta, I productionized the Transparency Log service for AI and agentic workflows, shipping Host and Binary Transparency support from API and database design through deployment. I also brought the service to production across 10 global regions with cryptographic integrity evidence.

On Instagram Account Security, I owned instagram.com/hacked and Trusted Friends, products serving 2B+ users. Trusted Friends contributed to more than 849 additional hacked lock clears per day, while my account recovery work included a credit card verification flow that fulfilled a legal commitment and achieved a 30% clear success rate for business account recovery.

Earlier, I built and maintained payment systems at Invoice Cloud, Inc. that handled $2B+ in annual transactions, and modernized .NET APIs to deliver a 3× response time improvement. I hold an MS in Cybersecurity from the University of London, where my focus is transparency infrastructure, applied cryptography, and network security.

Experience

Work history, roles, and key accomplishments

Meta logoME
Current

Senior Software Engineer

Mar 2025 - Present (1 year 6 months)

Designed and shipped Host and Binary Transparency support in Transparency log service end-to-end, including API interface, database schema, production deployment, and cross-service integration. Productionized the service across 10 global regions with observability infrastructure.

Meta logoME

Software Engineer to Senior Software Engineer

Mar 2022 - Mar 2025 (3 years)

Owned instagram.com/hacked and Trusted Friends, driving full-stack engineering, experiments, and launches serving 2B+ users. Improved Good Account Recovery metric by ~17% and led Last Resort Recovery unification workstream.

II

Software Engineer / Systems Analyst

Invoice Cloud, Inc.

Oct 2016 - Jan 2021 (4 years 3 months)

Built and maintained enterprise payment processing systems handling $2B+ in annual transactions across 100+ municipalities with PCI DSS compliance. Modernized legacy .NET APIs and optimized database queries, delivering 3x response time improvement and 95%+ test coverage.

Education

Degrees, certifications, and relevant coursework

University of London logoUL

University of London

Master of Science, Cybersecurity

2023 -

Pursuing an MS in Cybersecurity with a focus on transparency infrastructure, applied cryptography, and network security.

Johns Hopkins University logoJU

Johns Hopkins University

Master of Science, Applied Bioengineering

Completed an MS in Applied Bioengineering.

Udacity logoUD

Udacity

AI Engineering Certificate, Artificial Intelligence

Earned an AI Engineering Certificate.

University of Texas Rio Grande Valley logoUV

University of Texas Rio Grande Valley

Bachelor of Science, Engineering Physics

Completed a BS in Engineering Physics.

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