Jeffrey Espiritu
Software Developer at Cognizant
Mississauga, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolJeffrey Espiritu is a pragmatic full-stack software developer with 12 years of hands-on experience building and maintaining secure, enterprise web applications, currently contributing at Cognizant from Mississauga. He spans back-end and front-end stacks—C#, Java, ASP.NET, Angular—and brings strong DevOps familiarity with Jenkins, OpenShift, and automated deployments. Jeffrey is skilled at debugging production incidents, shipping new features, and improving reliability, and he pairs that with a history of writing focused unit tests and accessibility fixes for popular open-source UI components like the bootstrap-slider. He learned low-level programming early—struggling through C/C++ pointers on an old AMD Sempron box—and still treats coding as both profession and hobby, continually exploring new tooling and languages.
12 years of coding experience
Advanced Diploma, Computer Programming and Analysis, Advanced Diploma, Computer Programming and Analysis at Seneca Polytechnic
Github Skills (7)
javascript10
unit-test10
bootstrap9
bootstra9
accessibility8
css7
html7
Programming languages (5)
Github contributions (5)
seiyria/bootstrap-slider
Oct 2018 - Mar 2019
A slider control for Bootstrap 3 & 4.
Role in this project:
Front-end Developer & QA Engineer
Front-end Developer & QA EngineerContributions:150 commits, 41 PRs, 60 pushes in 4 months
Contributions summary:Jeffrey primarily contributed to improving the testing of the slider component, adding unit tests to cover various scenarios such as dragging handles, keyboard navigation, and the 'slideStart' event. The user also addressed bugs related to the component's behavior, including fixing issues with value calculations and tooltip positioning. Furthermore, the user made efforts to enhance the component's accessibility by adding and testing 'aria-valuetext' attributes.
bootstrap-3javascriptsliderslider-controlbootstrap
jespirit/bootstrap-slider
Oct 2018 - Apr 2019
A complete rewrite of the original bootstrap-slider by Stefan Petre.
Contributions:55 pushes, 16 branches, 2 tags in 5 months
slidesliderssliderstepperbootstrap-table
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