Leif Dreizler
AppSec Engineer @ Semgrep
- Role
- Application Security Engineer at Semgrep
- Location
- San Francisco, CA, US
- LinkedIn followers
- 500 followers
About Leif Dreizler
I have worked in the information security industry for over a decade with a focus on Software Engineering and Product Security.I started as a security consultant at Redspin, went on to become Bugcrowd\'s first sales engineer, and later joined Segment as an early member of their security team. During my time at Segment I transitioned to a security software engineering role and later became an engineering manager, leading a team focused on building customer-facing security features.After five and a half years at Segment (two and half post Twilio acquisition), I left to join Semgrep as an engineering manager. At Semgrep I helped build and launch our third product, Semgrep Secrets, and became a manager of managers.
Experience
Application Security Engineer
Feb 2026 — Present · San Francisco, CA, US
Semgrep’s #0 customer
Education
UC Santa Barbara
Bachelor of Science, Computer Science
2009 — 2013
University of Sussex
Informatics
2011
Skills
- Penetration Testing
- Burp Suite
- Computer Security
- Parallel Programming
- Networking
- Information Security
- Javascript
- Network Security
- C++
- Web Application Security
- Java
- Ruby
- Hipaa
- Html
- Owasp
- Social Engineering
- Vulnerability Assessment
- Os X
- Mysql
- Nessus
- C
- Rallying
- Python
- Git
- Gif
- Nmap
Find verified contacts for anyone on LinkedIn
Unifers gives sales teams verified emails and direct dials, enriched profiles, and outreach that lands in the inbox.
Free plan included · No credit card required
This profile is compiled from publicly available professional sources. Unifers is not affiliated with or endorsed by LinkedIn. Request removal of this profile.