Mark Eissler
Principal at Bunker Five Systems
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolMark Eissler is a Principal software engineer based in San Francisco with over 12 years of professional experience and two decades total in technology, blending hands-on development, DevOps, and platform architecture. He has led full-stack and infrastructure efforts across startups and product companies—shipping backend services in Go, Node.js, Swift Vapor, Ruby, and C/C++, and operating cloud-native deployments on AWS and GCP with Terraform and Kubernetes. Mark routinely serves as a technical lead and mentor, improving deployment pipelines, reducing release times, and introducing Docker-based workflows and IaC across organizations. His background spans healthcare diagnostics, fintech, remote-desktop consumer software, and email security, showing an ability to translate regulated-domain requirements into practical, reliable systems. Notably, he combines product-minded engineering with a long history of building tooling and small products (from macOS utilities to open-source gems), reflecting an entrepreneurial knack for turning ideas into production-ready platforms.
12 years of coding experience
24 years of employment as a software developer
UMBCBS, Computer Science, BS, Computer Science at University of MarylandToronto Metropolitan University
English, German, French
Stackoverflow
649reputation
1.5mreached
16answers
0questions
Github Skills (200)
windows10
ruby10
visual-studio10
milter10
linux10
editor10
password-policy10
1password10
color-picker10
git-addons10
electron10
typescript10
vscode-extension10
git-hooks10
changelog10
Programming languages (13)
Github contributions (5)
ValiMail/devise-secure_password
Dec 2017 - Aug 2018
A password policy enforcement extension for devise.
Contributions:17 commits, 18 PRs, 21 pushes in 7 months
policypassword-policypolicy-enforcementenforcementsecurity
markeissler/wonderful-objective-c-style-guide
May 2014 - Apr 2015
Contributions:21 commits, 1 push, 1 tag in 10 months
objective-cosxstyle-guideswiftios
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