Delano Mandelbaum
Vancouver, British Columbia, Canada
Summary
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RockstarDelano Mandelbaum is an engineering leader with 17 years of experience building high-performing teams and secure systems across health tech, mental health, and consumer platforms. He has served as VP Engineering and CTO at startups and non-profits, shaping product-focused engineering organizations at Quantified Citizen, Greenspace Mental Health, and the Animal Food Bank Foundation. A longtime privacy and open-source advocate, he’s been building secure, privacy-focused tools since 2012 and created the Onetime Secret project. His open-source contributions include protocol-level work on the net-ssh Ruby library, where he implemented ARCFOUR cipher support and critical fixes for multi-host and I/O issues. Based in Vancouver, he blends hands-on backend engineering with leadership in regulated domains, consistently turning privacy requirements into practical, auditable systems. Colleagues rely on him for pragmatic security stewardship and a track record of shipping resilient software under real-world constraints.
17 years of coding experience
20 years of employment as a software developer
Dutch, French, English
Stackoverflow
134reputation
7kreached
5answers
0questions
Github Skills (9)
openssl10
ssh10
ruby10
macos6
amazon-ec26
io6
hosting6
unix6
command-line6
Programming languages (13)
Github contributions (5)
net-ssh/net-ssh
Jun 2009 - Dec 2016
Pure Ruby implementation of an SSH (protocol 2) client
Role in this project:
Back-end Developer
Back-end DeveloperContributions:286 commits, 2 PRs, 2 branches in 7 years 7 months
Contributions summary:Delano implemented support for the ARCFOUR encryption ciphers (arcfour128, arcfour256, and arcfour512) in the SSH library. They modified core files such as `cipher_factory.rb`, `algorithms.rb`, and `packet_stream.rb` to include these ciphers, including tests for their encryption and decryption functionality, and also fixed related issues. Further contributions included a gem fix, support for multiple hosts in the config, and fixes related to issues with IO#select.
ssh-protocolsshpure-rubyruby
delano/redis-dump
Nov 2010 - Jan 2023
Contributions:6 releases, 86 commits, 8 PRs in 12 years 4 months
redisrestoredata-redisjsonbackup
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