Hugo Landau
Chief Engineer at M42
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolHugo Landau is a Chief Engineer with 13 years of hands-on experience building secure, production-grade systems across operations, devops, networking, and cryptography. He has deep applied-crypto expertise demonstrated by implementing QUIC in OpenSSL and contributions to high-profile ACME infrastructure like Let's Encrypt’s Boulder and the acmetool project. A prolific open-source maintainer and standards author, he blends systems-level C/C++ work with modern Go and Python development to harden key management, certificate lifecycles, and protocol compliance. As a former solo founder and long-time self-employed engineer, he’s practiced at owning full stacks and shipping end-to-end security products. Based in Seattle, he brings uncommon firmware reverse-engineering skills for embedded environments alongside internet-infrastructure policy experience. Colleagues rely on him for pragmatic, audit-able solutions that bridge low-level implementation detail and operational reliability.
13 years of coding experience
11 years of employment as a software developer
CertHE Physics and Mathematics, CertHE Physics and Mathematics at University of London
English
Github Skills (20)
storage10
acme10
rsa10
security10
ecdsa10
go10
certificate-authority10
cryptography10
cert9
hook9
certificate9
notification8
dns8
mysql8
tls127
Programming languages (26)
Github contributions (5)
hlandau/acmetool
Nov 2015 - Jan 2023
:lock: acmetool, an automatic certificate acquisition tool for ACME (Let's Encrypt)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:68 releases, 434 commits, 48 PRs in 7 years 3 months
Contributions summary:Hugo contributed to the development of the acmetool project, specifically focusing on the implementation of features related to notifications and storage. Their contributions involved modifying the notification system to utilize hook programs and to pass state directory information. They also made changes to the storage layer, adding features such as the import of private keys and certificates, and revoking certificates, suggesting a focus on managing the lifecycle of cryptographic assets within the system. Furthermore, their work included adjustments to improve the overall functionality and maintainability of the software.
lockacme-servertlsacmetoollet
letsencrypt/boulder
Nov 2015 - Feb 2016
An ACME-based certificate authority, written in Go.
Role in this project:Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:8 commits, 7 PRs, 102 comments in 3 months
Contributions summary:Hugo contributed to the core functionality of the Boulder project, primarily focusing on security and key management. Their work includes adding ECDSA key validation and testing, as well as implementing stricter checks on RSA keys, including size and exponent validation. The user also addressed vulnerabilities related to IPv6 compatibility within MySQL database configurations, and refactored the CAA (Certificate Authority Authorization) checking mechanism for enhanced compliance and security. Furthermore, the user updated vendorized CFSSL and related dependencies to reflect the interface changes.
golangcertificate-authorityletsencryptpkilets-encrypt
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