Steef Janssen Email & Phone Number
Senior Staff Engineer @ Qonto
5 free lookup(s). No credit card required.
If you need more lookups,
subscriptions start at $34 USD/month.
Steef Janssen Location
- Budapest, HU
Steef Janssen Work
- 2024 -now Senior Staff Engineer @
- 2021 -2024 Frontend Expert and Staff Engineer @
- 2020 -2021 Senior Frontend Engineer @
- 2018 -2020 Web Development Team Lead @
- 2018 -2018 Senior Web Developer @
- 2018 -2018 Senior Frontend Developer @ ZenHeads
- 2016 -2017 Frontend Engineer @
- 2014 -2016 Senior Front End developer @
- 2011 -2014 Front-end Developer and Designer @ appealing
- 2011 -2013 Developer @
- 2009 -2012 Web developer and owner @ Stars Webdesign
- 2010 -2011 Frontend Developer and designer @ Topshelf Megastores
- 2009 -2010 Intern Business Intelligence @
Steef Janssen Education
- Fontys Hogeschool 2004-2010
- Raayland College 1999-2004
Steef Janssen Skills
- MySQL
- SQL Server
- Social Media
- Git
- Responsive Web Design
- jQuery
- Node.js
- User Experience
- HTML 5
- Web Applications
- Photoshop
- Web Design
- Content Management Systems Cms
- Web Development
- Agile Methodologies
- Front End
- Adobe Photoshop
- UML
- AJAX
- Usability
- React.js
- Mobile Applications
- HTML
- AngularJS
- CSS3
- SASS
- WordPress
- PHP
- Psdtoxhtml
- JavaScript
- Ruby on Rails
- Joomla
- Dutch
- CSS
- SQL
- LESS
- Roc
- User Interface Design
- OAuth
- Cascading Style Sheets Css
- Front End Development
- Technology Solutions
- HTML5
- Twitter Bootstrap
- Cascading Style Sheets
- Content Management Systems
Steef Janssen Summary
- Steef Janssen, based in Budapest, HU, is currently a Senior Staff Engineer at Qonto. Steef Janssen brings experience from previous roles at Qonto and UNLEASH. Steef Janssen holds a 2004 - 2010 Fontys Hogeschool. With a robust skill set that includes MySQL, SQL Server, Social Media, Git, Responsive Web Design and more. Steef Janssen has 2 emails and 1 mobile phone numbers on RocketReach.
Looking for a different Steef Janssen?
Find contact details for 700 million professionals.
Top Qonto Employees
G2 Crowd Trusted
300K+ Plugin Users
© 2026 RocketReach.co