April King
Staff Security Engineer at LinkedIn
Saint Paul, Minnesota, United States
Summary
🤩
Rockstar🎓
Top SchoolApril King is a Staff Security Engineer with 15+ years of experience securing large-scale web and infrastructure systems at companies including LinkedIn, Dropbox, Twitter, and Mozilla. She built influential tools and programs—most notably the Mozilla Observatory and contributions to badssl.com—and has led major projects from certificate pinning overhauls that averted multi-million-dollar outages to enterprise-wide disk encryption for 12,000 servers. A proven technical leader, she has rebuilt security teams, authored corporate security standards, and operated long-running bounty programs while mentoring engineers across disciplines. Her background spans deep cryptographic expertise, single sign-on architectures handling millions of authentications per day, and hands-on troubleshooting across Python/LDAP, web servers, and UNIX systems. Notably, she blends product-focused security engineering with open-source impact, improving security for millions of sites and influencing TLS/HTTPS practices industry-wide.
15 years of coding experience
27 years of employment as a software developer
BA (with distinction) Psychology (major) Japanese (minor), BA (with distinction) Psychology (major) Japanese (minor) at University of MinnesotaAnoka-Ramsey Community College
Japanese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (23)
ssl10
tls1210
http10
bash10
tls1310
java10
security10
javas10
certificate10
front-end-development10
openssl10
html10
macos10
testing9
sha9
Programming languages (32)
Github contributions (5)
chromium/badssl.com
May 2015 - Jul 2020
:lock: Memorable site for testing clients against bad SSL configs.
Role in this project:
Security Engineer
Security EngineerContributions:46 commits, 37 PRs, 10 pushes in 5 years 3 months
Contributions summary:April primarily contributed to the security testing website, badssl.com, by creating and configuring various SSL/TLS certificates and related infrastructure. They generated root and intermediate certificate authorities, crafted certificates with different configurations (SHA-1, RSA key lengths, SANs, and client certificates), and added new test cases. Their work included automating certificate generation and deployment, and creating new test domains to expose different TLS vulnerabilities and configurations.
nginxpythonlocksshconfigs
mozilla/bedrock
Dec 2016 - Jun 2020
Making mozilla.org awesome, one pebble at a time
Role in this project:Security Engineer
Security EngineerContributions:1 review, 14 commits, 13 PRs in 3 years 6 months
Contributions summary:April primarily contributed to the security aspects of the Mozilla bedrock project. They updated the web bug bounty program, modifying the eligible sites, updating the hall of fame with contributors, and modifying the FAQ. Additionally, the user made changes to the content displayed on the security pages for the bug bounty program.
pebblefirefoxpythondjangocss
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