Jan Seidl - Software Engineer at brave

Jan Seidl

Software Engineer at brave

Sunnyvale, California, United States

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Summary

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Rockstar

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Top School

Jan Seidl is a seasoned software engineer with 13 years of experience and a deep specialty in ICS/SCADA security, having spent seven years securing critical infrastructure across power, chemical, oil & gas, mining and automated buildings. He blends low-level expertise with broad systems knowledge—PLCs, RTUs and industrial protocols (Modbus, DNP3, IEC 60870‑5, Profibus/S7)—with enterprise security practices like NERC CIP and ISA/IEC 62443. Comfortable across platforms and languages, Jan pairs hands-on firmware and binary analysis experience with infrastructure and DevOps skills (VMware/OpenStack, AIX, RHEL) and programming in C/C++, Python, Ruby and more. His open-source contributions include security and build-process hardening for the widely used Brave browser and cryptography work on SecureDrop, illustrating a focus on practical, auditable security improvements in real-world projects. Based in Sunnyvale, he brings both vendor-level familiarity (Siemens, Waterfall, Tofino, Palo Alto, ABB) and an investigator’s mindset—incident response, reverse engineering and penetration testing—to design resilient industrial systems.

13 years of coding experience

High School, High School at EDEM

Spanish, English, Portuguese

Stackoverflow

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Github Skills (40)

webbrowser10

dependency-management10

javascript10

c-language10

npm10

electron10

python10

audit10

browser10

cicd10

pg10

security10

automation10

windows-security10

code-auditing10

Programming languages (21)

C#JavaC++CSSBikeshedCRustGo

Github contributions (5)

diracdeltas/FastestWebsiteEver

May 2017 - Dec 2018

ultrafast single TCP packet audio/visual experience

Role in this project:

Front-end Developer

Contributions:1 review, 36 commits, 12 PRs in 1 year 7 months

Contributions summary:Jan primarily focused on front-end development, making significant changes to the `index.html` file. Their contributions centered on optimizing the website's visual appearance and user experience, including reducing file sizes, modifying titles, and adding elements related to audio and visual features. They also introduced and removed ad integrations, demonstrating experience with UI elements and related content display.

audiopacketultrafastaudio-visualtcp

freedomofpress/securedrop

Oct 2013 - Aug 2016

GitHub repository for the SecureDrop whistleblower platform. Do not submit tips here!

Role in this project:

Back-end Developer

Contributions:126 commits, 1 PR, 3 comments in 2 years 10 months

Contributions summary:Jan made several commits focused on back-end development within the SecureDrop platform. They modified Python code, specifically within the `modules/deaddrop/files/deaddrop/crypto.py` file, to reorganize and update cryptographic functions, including testing of those functions. These updates involved adding and modifying configuration settings related to hashing, and integrating updates from external branches. This user appears to be involved in maintaining the core cryptographic operations of the SecureDrop application.

usabilitypythonsubmitflask-applicationsecuredrop

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