References
Client satisfaction is our top priority. And thanks to our experience, we’re a sought-after partner. We have already successfully advised and supported the following companies (excerpt):















In short, current customers or business partners are of interest in order to reduce possible uncertainties. Gain an insight and see us from our clients’ point of view. Get a better impression in the following case studie:
Call Centre
Travel and Expense Management
Download
Tellmann Consulting Case Study 02 Travel und Expense Management
External Services
Downloand
Tellmann Consulting Case Study 03 Externe Dienstleistungen
If you’d like to learn more about our projects, we will happily provide you with further information.
Experience in the following industries:
We have experience in a wide range of industries, such as airlines, automotive, banking, e-commerce, energy, retail, engineering, oil & gas, travel agency chains, tour operators, software manufacturers, systems houses, telecommunications, tourism, management consulting or insurance.

Allianz Group
Deutschland

AXPO
Schweiz

Barkawi Group / B2X Care Solutions
Deutschland

BSH Bosch-Siemens-Haushaltsgeräte
Deutschland/USA

Burkhardt Compression
Schweiz

Deutsche Lufthansa / Star Alliance
Deutschland/International

DKV Mobility Services Group
Deutschland

Dresdner Bank Group
Deutschland

EnBW Energie Baden-Württemberg
Deutschland

LCC Lufthansa City Center
Deutschland

Lufthansa eCommerce
Deutschland

PCS Wireless
USA

Provinzial Versicherungen
Deutschland

Sulzer Management
Schweiz

TUI Group Plc.
Deutschland