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Andrew Hollenbach

Andrew Hollenbach

Software engineer, manager, and human driving impactful product development

New York, United States
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Summary

Andrew is a highly skilled software engineer and manager with a strong focus on building secure, scalable, and user-friendly products. His work at Privy, where he transitioned from Founding Engineer to VP of Engineering, exemplifies this by leading the development of embedded wallet infrastructure that supports millions of users with advanced cryptographic techniques like TEEs and key sharding. theorg+4
His academic background from Rochester Institute of Technology (RIT) demonstrates a strong foundation in computer science and a passion for cutting-edge research. His MS thesis on multi-MAV SLAM systems for autonomous exploration showcases his expertise in robotics and computer vision, while his involvement in the 'Kinect Music' project highlights an innovative approach to human-computer interaction and creative technology. rit+2
Beyond his technical prowess, Andrew is also a leader dedicated to fostering growth and impact within teams. His personal philosophy emphasizes learning, diversity, and inclusion, which he applies in his management roles and through his contributions to the engineering community via his personal blog and public writings. ahollenbach+1

Work

Education

Projects

Writing

How Privy embedded wallets work

June 1, 2025

Explains Privy’s secure, scalable wallet architecture, detailing the use of Trusted Execution Environments (TEEs) and key sharding to power over 75 million accounts. It covers wallet creation, secure execution, user authentication, and programmability.

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migrations

October 1, 2024

A blog post detailing a pragmatic approach to running migrations, outlining steps such as directing writes to new flows, leveraging old flows for reads, backfilling data, and eventually removing old references.

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Accessing your embedded wallet everywhere

September 1, 2024

Discusses the launch of cross-app accounts and how Privy-powered wallets can be integrated into existing Rainbowkit code or wagmi-based connector libraries, enhancing interoperability and providing a seamless onboarding experience for users.

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Sharing the secret: a peek under the hood of Privy's Shamir Secret Sharing library

September 1, 2024

A deep dive into the technical details of Privy's implementation of Shamir Secret Sharing for key management, which is a core component of their secure wallet infrastructure.

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Hobbies

Enjoys running marathons. ahollenbach

Learned to bake delicious treats. ahollenbach

Has created projection mapping visuals that follow a live musician. ahollenbach

Writes on personal topics such as running, cycling, and other various subjects in his personal 'garden' blog. ahollenbach