Mark Cornelissen
Senior Software Engineer at Hunter.io
Almere, Flevoland, Netherlands
Summary
👤
SeniorMark Cornelissen is a seasoned Senior Software Engineer with 15 years of experience building dependable web applications and integrating systems across languages like Ruby, PHP, Java, and C#. Currently at Hunter.io, he focuses on Ruby/Rails application design and delivery while bringing a history of technical leadership and hands-on development from roles as Lead Developer and Technical Architect. Mark has a practical streak for improving user-facing reliability—evident in his open-source work on a microblogging project where he enhanced authentication, session handling and duplicate-post protection. Based in Almere, Netherlands, he enjoys exploring new platforms and consistently ships high-quality, maintainable software. Colleagues know him for balancing pragmatic engineering with a curiosity for emerging technologies.
15 years of coding experience
20 years of employment as a software developer
Dutch, English
Stackoverflow
1,058reputation
86kreached
19answers
0questions
capybara
top-5%
Github Skills (20)
unit-testing10
session-management10
testing10
authentication10
user-authentication10
acceptance-testing10
ruby10
rack10
test-unit10
capybara9
sinatra9
rest-api8
api-rest8
restful-api8
api-design8
Programming languages (6)
Github contributions (5)
hotsh/rstat.us
Apr 2011 - Feb 2012
Simple microblogging network based on the ostatus protocol.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits in 10 months
Contributions summary:Mark primarily focused on enhancing the authentication and session management aspects of the microblogging application. They implemented a "remember me" feature, extending session handling with cookie expiry customizations and case-insensitive username login. Furthermore, the user addressed duplicate posts, ensuring content integrity and improved user experience within the feed. They also contributed to logging capabilities and overall application improvements.
dokkumicrobloggingprogressive-web-appsostatus
mrkcor/echo
Aug 2012 - Oct 2020
Echo
Contributions:4 commits, 16 pushes, 1 branch in 8 years 4 months
echo
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.