Henry Mckillen
Application Security Developer
Leinster, Ireland
Summary
👤
Senior🎓
Top SchoolHenry Mckillen is an Application Security Developer and seasoned frontend engineer with over 17 years in web development and 11 years of focused experience delivering accessible, production-grade UIs across industries from aviation to healthcare. He blends deep HTML/CSS/ES6 expertise and modern frameworks (Angular, Vue) with practical security stewardship—triaging SAST/DAST findings, shaping vulnerability SLAs, and hardening Node.js and web apps. As a former UI architect and team lead at Aer Lingus, he has led large teams, driven design system work, and overseen major site rewrites while keeping UX and accessibility (WAI-AA) front and center. Comfortable across the full frontend lifecycle, he pairs hands-on coding with policy and process improvements, and has a pragmatic knack for turning legacy frontends into maintainable, standardized codebases. Based in Leinster, Ireland, he brings both long-term freelance breadth and enterprise-level delivery experience to bridge engineering, product and security goals.
11 years of coding experience
23 years of employment as a software developer
Grad. Dip. (Hons) Entrepreneurship Management, Grad. Dip. (Hons) Entrepreneurship Management at University of Limerick
Github Skills (11)
amazon-linux7
spotify6
amazon5
conky5
linux4
shell4
nodejs4
jenkins4
jenkins-agent4
agent3
aws3
Programming languages (7)
Github contributions (5)
harrymckillen/lotto-gen
Oct 2019 - May 2022
A Quick Pick line generator
Contributions:1 PR, 2 pushes in 2 years 7 months
generatorpickcli
harrymckillen/harrymckillen.com
Mar 2015 - Mar 2025
personal website for myself
Contributions:36 PRs, 153 pushes, 11 branches in 10 years 1 month
reactnextjsmyself
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