Shiloh Heurich
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolShiloh Heurich is a seasoned security engineer with 10+ years of cryptographic security and PKI expertise, currently a Staff Security Engineer at Fastly in San Francisco. He drives secure design and implementation across high-scale services, with prior leadership roles at Cloudflare, Twitter, Salesforce, Apple, NASA, and NOAA, focusing on identity, authentication, TLS, and distributed security architectures. An active open-source contributor, he worked on the Let's Encrypt Boulder project as a back-end developer, implementing certificate profile handling and OCSP/CRL URL logic, fixing formatting and data races while tightening documentation. His experience spans microservice API design, Go development, and PKI applications, delivering auditable, scalable security solutions in complex environments. Outside work, he thru-hiked the Appalachian Trail starting April 2024, reflecting endurance and curiosity beyond code. Based in the Bay Area, he marries hands-on engineering with strategic security governance to ship reliable, secure systems at scale.
11 years of coding experience
23 years of employment as a software developer
The University of Maryland, College ParkBS, Computer Science, BS, Computer Science at University of Maryland
Stackoverflow
31reputation
8kreached
1answer
0questions
Github Skills (18)
tls1210
testing10
acme10
tls1310
mtls10
go10
certificate-authority10
libtls10
pki10
debug9
debugging9
cryptography9
git8
dockerce7
dockers7
Programming languages (9)
Github contributions (5)
letsencrypt/boulder
Jun 2018 - Jun 2020
An ACME-based certificate authority, written in Go.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:14 reviews, 3 commits, 11 PRs in 1 year 11 months
Contributions summary:Shiloh focused on enhancing the `boulder` project's certificate authority functionality. They implemented features related to certificate profiles, ensuring correct handling of OCSP and CRL URLs for intermediate certificates. Their work included fixing output formatting in certificate generation and addressing data races in the test server, improving the stability and reliability of the system. The user also corrected comments, and fixed typos, demonstrating attention to detail in both code and documentation.
golangcertificate-authorityletsencryptpkilets-encrypt
sheurich/coen
Aug 2018 - Sep 2023
Root KSK Ceremony Operating ENvironment
Contributions:10 pushes, 1 branch in 5 years 1 month
ceremonyoperatingroot
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