Expiration date: 2028/03/18
Ernst Jan Feenstra
Located in Netherlands
Employed at TRES
Umbraco Certified Master is a developer with the highest level of developer certification. A Certified Master has committed to achieving all available Umbraco training courses and thereby has build up a 360 degree understanding of building applications on Umbraco.
Certified Professional
Certified Expert
Certified Master
Fundamentals courses
- Fundamentals
Foundation courses
- Umbraco and MVC
- Security
- Extending the Backoffice
- Application Integration
Skill courses
- Searching and Indexing
- Cloud Developer
- Load Balancing
Certifications
| Name | Issued | Expires |
|---|---|---|
| Master | March 2026 | 2028-03-18 |
| Cloud Developer | March 2026 | |
| Expert | December 2025 | 2027-12-17 |
| Professional | November 2025 | 2027-11-27 |
| Professional | December 2023 | 2025-12-28 |
This is the full history of all official training courses that Ernst Jan Feenstra has attended.
To ensure that officially Umbraco certified developers know how to build current Umbraco solutions, only training attended in the current and previous “major” Umbraco version counts toward the total certification level.