Joost Elfering
Software Engineer at ITS Collective, Yopefonic Inc, RAM Infotechnology
Sassenheim, South Holland, Netherlands
Summary
👤
SeniorJoost Elfering is a pragmatic lead engineer and founder with 14+ years of experience delivering web and internet-based products for startups and enterprise clients from The Hague. He blends hands-on full-stack development, product design and project leadership—often stepping into gaps in small teams to drive projects from concept to scalable production. As CTO and CEO of several ventures and contributor to notable open-source projects like Jasmine (improving its test coverage), he pairs a hacker mentality with formal media-technology training from Leiden. Joost focuses on sustainable tech stacks, operational standards and user-centered solutions, and has a track record in broadcast-scale distribution, EHS tooling, and early-stage startup scaling. Outside work he channels creative instincts into digital painting, gaming and snooker, a mix that informs his cross-disciplinary approach to problem solving.
14 years of coding experience
Github Skills (5)
regular-expression10
javascript10
jasmine10
tdd10
testing10
Programming languages (4)
Github contributions (5)
jasmine/jasmine
Jun 2012 - Jul 2012
Simple JavaScript testing framework for browsers and node.js
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 commits in 1 month
Contributions summary:Joost primarily contributed to strengthening the test coverage of the Jasmine JavaScript testing framework. They added and modified specs within `MatchersSpec.js` to cover various scenarios, including RegExp comparisons and the 'sticky' flag support. These commits addressed identified issues and added new tests to ensure the framework's functionality, specifically related to regular expressions.
javascriptnodejstestingjasminetdd
yopefonic/excalibur
Sep 2012 - Feb 2015
Contributions:28 commits, 4 pushes in 2 years 4 months
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.