Lewis Ardern

The original English breakfast

Role: Staff Security Researcher at Semgrep
Location: Los Angeles, CA, US
LinkedIn followers: 500 followers

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About Lewis Ardern

Lewis is an experienced application security professional who specializes in modern web…

Experience

Staff Security Researcher
Semgrep
Apr 2022 — Present · Los Angeles, CA, US
Taking Semgrep to the

Education

City College Coventry
BTEC National Diploma for Computer Security & Networking
2007 — 2010
Leeds Beckett University
Bachelor's Degree, Computer Security & Ethical Hacking
2010 — 2014
Whitley Abbey Community School
GCSE
2001 — 2006

Contact information

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Work email
•••••@semgrep.dev
Personal email
•••••@•••••.com
Direct dial
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Current company

Semgrep

Software Development · 281 employees · Founded 2017 · San Francisco, California, United States

Semgrep is the leader in code security for builders. Teams catch, flag, and fix real issues before they ship, powered by security that learns as you build. Built for builders and trusted by security, the platform unifies SAST, SCA, and secrets scanning, embedding protection directly into the development workflow so security begins where code is written and lives where developers work. Semgrep combines deterministic static analysis with AI reasoning to power detection, triage, and remediation. This approach helps teams uncover real vulnerabilities, prioritize reachable risks, and fix issues faster. Customers report up to 80% fewer false positives across Code and Supply Chain, with 95% of findings validated by security reviewers across more than 6 million results. Founded in San Francisco, Semgrep is backed by Menlo Ventures, Felicis Ventures, Lightspeed Venture Partners, Redpoint Ventures, and Sequoia Capital. It is recognized by Gartner in Application Security Testing and trusted by leading organizations, including Snowflake, Dropbox, and Figma. Learn more at semgrep.dev.

semgrep.dev

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About Lewis Ardern

Experience

Staff Security Researcher

Education

City College Coventry

Leeds Beckett University

Whitley Abbey Community School

Find verified contacts for anyone on LinkedIn