Lukas Reschke
Managing Director at Authentick
London, England, Germany
Summary
🤩
Rockstar
Top expert inComprehensive Open-Source Technology Ecosystem
Lukas Reschke is a seasoned security-focused software engineer and entrepreneur with 14 years of experience building and hardening web and cloud platforms. As a Nextcloud co-founder and long-time contributor he has shipped core backend features, app integrations and documentation while leading security processes for large open-source deployments. He later scaled security work at Facebook as a Staff Security Engineer, coordinating privacy incident response and driving product security reviews across teams. Lukas combines hands-on backend and mobile development with deep static-analysis and taint-tracking expertise—contributions to projects like Psalm demonstrate his ability to find and mitigate subtle vulnerabilities such as SSRF and complex taint flows. Now running Authentick, he offers practical software and information security services informed by both large-scale platform experience and grassroots open-source stewardship. Based in London with roots in Germany, he blends developer empathy with formalized security programs (bug bounties, disclosure handling) that few engineers carry from both enterprise and community perspectives.
14 years of coding experience
4 years of employment as a software developer
English, German
Github Skills (72)
security-hardening10
mobile-development10
python10
saml10
csrf10
phpunit10
security10
javas10
xss10
rest-api10
web-development10
backend10
ssrf10
javascript10
content-security-policy10
Programming languages (22)
Github contributions (5)
nextcloud/app-certificate-requests
Aug 2016 - Jun 2022
🎖 Repository for requesting app certificates
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:217 commits, 97 PRs, 210 pushes in 5 years 10 months
Contributions summary:Lukas primarily contributed by adding certificate signing requests (CSRs) for various applications related to the Nextcloud ecosystem. These CSRs indicate the user's involvement in setting up secure communication channels, potentially for apps like spreedme, richdocuments, testapp, and others related to user authentication and secure data transfer. The commits suggest a focus on ensuring the secure integration of different Nextcloud apps and components.
appstorecertificatescertificatenextcloud
nextcloud/documentation
Jun 2016 - Oct 2021
📘 Nextcloud documentation
Role in this project:Technical Writer
Technical WriterContributions:4 reviews, 114 commits, 34 PRs in 5 years 5 months
Contributions summary:Lukas's contributions primarily focused on updating and improving the Nextcloud documentation. They added information on security topics like CSRF protection, OWASP Top Ten vulnerabilities, and directory traversal. The user also made various corrections and clarifications, including fixing typos, updating links, and adding details to the installation and configuration guides. These updates demonstrate a focus on enhancing the clarity, accuracy, and completeness of the documentation.
manualnextcloudsphinx
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