Samuel Mortenson
Senior Security Engineer at Mercury
Portland, Oregon, United States
Summary
👤
Senior🎓
Top SchoolSamuel Mortenson is a Senior Security Engineer based in Portland, Oregon with 11 years of experience bridging web development and security. After a long career building complex Drupal integrations and automation, he transitioned into product and platform security roles at Squarespace and Mercury, focusing on vulnerability management, bug bounties, and security tooling. He combines hands-on engineering—PHP, JavaScript, and automation—with practical security research, having publicly disclosed multiple CVEs across Drupal and related projects. Sam is comfortable working with both developer teams and security programs to operationalize SAST/DAST and ship secure features. Known for pragmatic problem-solving, he also has a track record of building demos and tooling that accelerate sales and developer workflows. He’s a curious internet-native engineer who still enjoys games and hunting quirks in web platforms.
11 years of coding experience
10 years of employment as a software developer
Portland State University
Github Skills (200)
html-editor10
credentials10
gitleaks10
draft-js10
text-editing10
contenteditable10
llm10
php10
packagist10
scanning10
devsecops10
mailchimp-api10
monkey-patching10
code-generator10
database-migration10
Programming languages (13)
Github contributions (5)
drupal-tome/tome-project
Jun 2018 - Mar 2022
A starter project for Tome.
Contributions:6 reviews, 29 commits, 2 PRs in 3 years 9 months
phptome
drupal-tome/big-tome
May 2019 - May 2019
Contributions:5 commits, 1 push, 1 branch in 1 day
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