5.0
24 Apr 2026
Recommend
CEO approval
Business outlook
Pros
Friendly people Good vibes Relaxing workplace Space to learn Good Flexibility for studies
Cons
I don't have any negative points to highlight
1&1 Telecom Reviews
55% would recommend to a friend
Ralph Dommermuth
53% approve of CEO
33% positive business outlook
1&1 Telecom has an employee rating of 3.4 out of 5 stars, based on 16 company reviews on Glassdoor which indicates that most employees have a good working experience there. The 1&1 Telecom employee rating is in line with the average (within 1 standard deviation) for employers within the Retail and wholesale industry (3.5 stars).