Skip to main content
Welcome to Deloitte

If we have selected the wrong experience for you, please change it above.

Celine Ostertag

Consultant

Celine is a Consultant within the Customer Team at Deloitte Switzerland. She focuses on Salesforce implementation projects, serving clients in the public sector, banking, and life sciences industries.

Let's connect

Deloitte AG is a shareholder in Deloitte EMEA BV (EMEA), which is a member firm of Deloitte Touche Tohmatsu Limited (DTTL). Deloitte EMEA and DTTL do not provide services to clients. Services may be provided by the EMEA shareholders or their affiliates, which are separate and independent legal entities. Please see www.deloitte.com/ch/about to learn more about our global network of member firms.

This communication contains general information only, and none of Deloitte EMEA (EMEA), its shareholders and affiliates is, by means of this communication, rendering professional advice or services. Before making any decision or taking any action that may affect your finances or your business, you should consult a qualified professional adviser.

No representations, warranties, or undertakings (express or implied) are given as to the accuracy or completeness of the information in this communication, and none of EMEA, the EMEA shareholders, their respective affiliates, employees or agents shall be liable or responsible for any loss or damage whatsoever arising directly or indirectly in connection with any person relying on this communication. EMEA, the EMEA shareholders and their respective affiliates are legally separate and independent entities.

Deloitte AG is an audit firm recognised and supervised by the Federal Audit Oversight Authority (FAOA) and the Swiss Financial Market Supervisory Authority (FINMA).

© 2026  For information, contact Deloitte AG.