T-Systems reviews

3.7

74% would recommend to a friend

(2,260 total reviews)
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Dr. Ferri Abolhassan

72% approve of CEO

59% positive business outlook

T-Systems has an employee rating of 3.7 out of 5 stars, based on 2,260 company reviews on Glassdoor which indicates that most employees have a good working experience there. The T-Systems employee rating is in line with the average (within 1 standard deviation) for employers within the Tecnologías de la información industry (3.9 stars).

Reviews by job title

2K reviews
1.0
Jan 30, 2026

No Job guaranty

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

company Politics No carrier growth

Cons

average salary. No projects. No work. many employees are in bunch

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T-Systems Response
4mo
Hi, Thank you for your feedback. We’re sorry to hear that your experience with Deutsche Telekom has been negative. Feedback like yours is essential in helping us identify areas where we can improve and create a better work environment. feel free to email us at support_career@telekom.de We appreciate having you on the team! Kind regards, Your Telekom Career Team
1.0
Jan 22, 2026

Toxic Culture

Recommend
CEO approval
Business Outlook

Pros

Nothing great as such, like low grade service base company

Cons

Micromanagement, Favoritism, manager use power of market correction even if you perform well, hybrid, but 6 hrs mandatory or a salary cut.

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T-Systems Response
5mo
Hi, Thank you for sharing your feedback. We're sorry to hear that your experience with Deutsche Telekom hasn’t met your expectations. Your input is valuable in helping us identify opportunities to improve and build a better working environment for everyone. If you'd like to share more details, feel free to reach out to us at support_career@telekom.de. We truly appreciate your contributions to the team. Kind regards, Your Telekom Career Team
5.0
Jan 21, 2026

Amazing place

Recommend
CEO approval
Business Outlook

Pros

Everything staff are so nice

Cons

Nothing at all I can think of

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T-Systems Response
5mo
Hi, We appreciate you taking the time to share your thoughts. While we’re glad to hear about the positive aspects of your experience at Deutsche Telekom, we’re also sorry that not everything has met your expectations. Your feedback is important to us as we continuously strive to improve. If you’d like to discuss your experience further, please don’t hesitate to email us at support_career@telekom.de. Thank you for being part of our team! Best regards, Your Telekom Career Team
Viewing 40 - 42 of 2,260 Reviews

Glassdoor has 4,324 T-Systems reviews submitted anonymously by T-Systems employees. Read employee reviews and ratings on Glassdoor to decide if T-Systems is right for you.