Florian Wininger - CTO at Cyberwatch

Florian Wininger

CTO at Cyberwatch

Paris, Ile-de-France

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Summary

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Rockstar

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Top School

Florian Wininger is a security-focused technology leader and CTO based in Paris with 13 years of experience building and scaling vulnerability management products for large enterprises and public sector clients. As co-founder of Cyberwatch, he led product innovation, technical hiring, and roadmaps that culminated in acquisition by Framatome, while still staying hands-on with Ruby on Rails development and security audits. His open-source contributions to projects like Wapiti and net-ssh show an emphasis on maintainability, modernizing cryptographic use, and hardening dependency chains. Comfortable operating between research and production, he has an academic background in computer science and practical R&D experience collaborating with industry partners such as Google and Ericsson. Colleagues describe him as a pragmatic engineer-manager who blends deep technical craftsmanship with strategic product delivery.

13 years of coding experience

8 years of employment as a software developer

Master of Science (M.Sc.) Computer and Information Sciences General, Master of Science (M.Sc.) Computer and Information Sciences General at Polytechnique Montréal

Ingénieur Généraliste Ingénieur d'affaires, Ingénieur Généraliste Ingénieur d'affaires at Centrale Nantes

German, English, French

Stackoverflow

Stats

153reputation

16kreached

5answers

0questions

Github Skills (33)

algorithm10

apim10

algorithms10

python10

vulnerability-scanners10

rails10

hmac-authentication10

implement10

refactor10

ruby10

security-testing10

api10

hmac10

openssl10

api-authentication10

Programming languages (12)

TypeScriptPowerShellDockerfileJavaShellCSCSSJavaScript

Github contributions (5)

mgomes/api_auth

Feb 2016 - May 2022

HMAC authentication for Rails and HTTP Clients

Role in this project:

Back-end Developer

Contributions:5 reviews, 38 commits, 33 PRs in 6 years 4 months

Contributions summary:Florian's contributions primarily involved refactoring and improving the codebase's style and performance. They addressed code style issues using Rubocop, focusing on string literal consistency, block delimiters, and whitespace. Additionally, the user updated request drivers and integrated Rails features with the authentication API, addressing issues related to HTTPS URLs. These changes demonstrate a focus on code quality, maintainability, and feature enhancements.

hmac-sha512ruby-on-railshmac-signaturehmac-authenticationhmac-md5

net-ssh/net-ssh

Jul 2019 - Apr 2022

Pure Ruby implementation of an SSH (protocol 2) client

Role in this project:

Back-end Developer

Contributions:10 reviews, 100 commits, 63 PRs in 2 years 9 months

Contributions summary:Florian primarily focused on code cleanup and refactoring within the `net-ssh/net-ssh` repository, a pure Ruby implementation of an SSH client. Their contributions included removing unnecessary code related to OpenSSL and improving code layout, such as fixing heredoc indentation and assignment indentations, improving the overall code readability and maintainability. They also updated the digester and modernized the OpenSSL SHA2 implementation, while removing an unnecessary check, improving the use of algorithms.

ssh-protocolsshpure-rubyruby

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