Jarkko Laemsae
Senior Solutions Engineer at Semgrep
United States
Summary
👤
Senior🎓
Top SchoolJarkko Laemsae is a Senior Solutions Engineer with 11 years of hands-on experience bridging deep security research and commercial outcomes across application, API, cloud, and runtime protection. He has repeatedly taken complex security products from market entry to enterprise-scale revenue—most notably driving Contrast Security’s APAC technical sales to seven-figure ARR and leading presales at Virsec and Wallarm. His background as employee #8 at Codenomicon and early fuzzing work (including contributions around Heartbleed and a CERT-logged SNMP flaw) gives him a practitioner’s edge: he writes code, breaks systems, and translates attacker thinking into practical defenses. Comfortable in developer languages (Java, .NET, Python, C/C++) and modern infra (Docker, Kubernetes, AWS/Azure), he excels at architecting paid pilots, MEDDPICC-driven sales cycles, and CI/CD-integrated DevSecOps solutions. He’s worked across startups to Fortune 500s on three continents, blending field CTO-level technical leadership with resume-proven security research. Notably, he combines protocol-level fuzzing expertise with enterprise presales acumen—a rare mix that shortens evaluation cycles and accelerates customer adoption.
11 years of coding experience
10 years of employment as a software developer
Master's degree, Computer and Information Sciences, General, Master's degree, Computer and Information Sciences, General at University of Oulu
Finnish, English, germany (basics), spanish (basics)
Github Skills (16)
spring-boot7
java6
spring6
security5
spring-security4
databind3
rce2
json2
security-scanner1
jackson-databind1
deserialization1
code-analysis1
jackson1
security-vulnerability1
eclipse-plugin1
Programming languages (2)
Github contributions (5)
lampska/spring-petclinic
Oct 2020 - Aug 2021
Vulnerable spring-boot application
Contributions:1 release, 7 commits, 3 PRs in 11 months
spring-bootvulnerablesecurityspring-boot-3spring
lampska/juice-shop
Sep 2021 - Mar 2025
OWASP Juice Shop: Probably the most modern and sophisticated insecure web application
Contributions:1 push, 1 branch in 3 years 6 months
caddyservertraefik-pluginartemisjuicesecurity
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