Mark Harrison
Principal Software Engineer (SRE) at Barracuda Networks
Reisterstown, Maryland, United States
Summary
🤩
Rockstar🎓
Top SchoolMark Harrison is a Principal Software Engineer (SRE) with 17 years of experience designing and operating large-scale, reliable systems from startups to enterprise security firms. Currently at Barracuda Networks after leadership roles at Valimail and Chef, he blends hands-on site reliability engineering with technical leadership in ops and platform teams. He has deep expertise in incident response, automation, and scalable infrastructure, cultivated through progressive roles from systems administrator to lead SRE. An active open-source contributor, he has improved the popular markdownlint project by adding rules, tests, and performance-minded refactors, showing attention to developer ergonomics and tooling. Based in Reisterstown, Maryland, he pairs a Computer Science degree from the University of Manchester with a pragmatic focus on observability and operability. Colleagues rely on him for turning messy production problems into repeatable, auditable solutions.
17 years of coding experience
12 years of employment as a software developer
Bachelor of Science (BSc), Computer Science, Bachelor of Science (BSc), Computer Science at The University of Manchester
Github Skills (6)
markdown10
markdown-it10
kramdown10
ruby10
testing9
regular-expression8
Programming languages (17)
Github contributions (5)
markdownlint/markdownlint
May 2014 - Aug 2016
Markdown lint tool
Role in this project:
Backend Developer
Backend DeveloperContributions:180 commits, 18 PRs, 74 pushes in 2 years 3 months
Contributions summary:Mark primarily contributed to the development of the markdown linting tool. Their work included implementing new rules, specifically for mixed header styles, the handling of documents, and the addition of tests for the implemented rules. They also added a gemspec and refactored the ruleset into a hash for faster rule access, along with implementing a rule to check for multiple consecutive blank lines.
markdownmarkdownlintruby
chef-boneyard/okta_aws
Apr 2017 - Feb 2019
Archived from chef/okta_aws - Tool for accessing the AWS API for an account you normally access via okta
Contributions:88 commits, 12 PRs, 64 pushes in 1 year 10 months
awsoktaaws-cli
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