J. Blum, S. Booth, O. Gal, M. Krohn, J. Len, K. Lyons, A. Marcedone, M. Maxim, M. E. Mou, J. O’Connor, et al. Zoom Cryptography Whitepaper. 2022.

B. Chen, Y. Dodis, E. Ghosh, E. Goldin, B. Kesavan, A. Marcedone, & M. E. Mou. Rotatable Zero Knowledge Sets : Post Compromise Secure Auditable Dictionaries with Application to Key Transparency. In Advances in Cryptology - ASIACRYPT 2022, Cham, 2022. Springer International Publishing.

Matias, J. N., & Mou, M. (2018, April). CivilServant: Community-Led Experiments in Platform Governance. In Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (p. 9). ACM.


Zoom Video Communications

Senior Security Software Engineer • May 2020 — Present

Designing and building infrastructure for end-to-end encryption.

  • Zoom Transparency Tree Designing and deploying a privacy-preserving public key directory system that supports auditability of user E2EE identity. Partnering with infrastructure and product engineering teams to ensure and improve user security across Zoom features.
  • Zoom Cryptography Whitepaper Documenting the security and privacy properties of cryptographic designs powering Zoom products in a continually updated, public whitepaper, since its initial release in May 2020.
  • Okta Authentication for End-to-End Encryption (E2EE) Led technical design and development to support third-party attestations of users’ cryptographic keys in E2EE video meetings. Drove implementation across ~10 teams spanning engineering, product, marketing, legal, and external partners.


Software Engineer • Oct 2019 — May 2020

Worked on an encrypted chat platform, projects including team-encrypted key-value stores and Keybase-backed SSH CA.

Expanse, Inc.

Software Engineer • Sep 2017 — Jul 2019

Developed functionality for a Internet asset discovery platform on a range of back-end projects, including network scanning infrastructure, ETL pipelines, microservice deployments, and internal tool full-stack development.

  • Contextual IPv4 Scanning Led project investigation and system implementation to improve global IPv4 scan accuracy and efficiency.

CivilServant, MIT Center for Civic Media

Software Engineer, Researcher • May 2016 — Sep 2017, July 2019 — Sep 2019

Built and evaluated software infrastructure that facilitates large-scale participatory experimentation of online moderation policies.

MIT Internet Policy Research Initiative

Researcher • Feb 2016 — May 2017

Implemented tools for network speed measurement.


  • vrf-r255 Validated and produced test vectors for the Community Cryptography Specification Project (C2SP) vrf-r255 spec of the Verifiable Random Function (VRF) cryptographic primitive using ristretto255.
  • threshold-OPAQUE Experimental Rust implementation of OPAQUE protocol, an asymmetric PAKE, and of threshold OPAQUE (supports multiple servers).
  • TOTP client Keybase chat bot
  • cyberpunk LED marquee Holzer-esque LED marquee, controlled via Rust code running on a raspberry pi. Built for a cyberpunk-themed music festival stage, now perpetually scrolling dystopian gibberish at home.



Massachusetts Institute of Technology (MIT)

  • Master of Engineering in Computer Science. GPA 5.0. 2016 — 2017.
  • B.S. in Computer Science. GPA 4.8. 2012 — 2016.