Your partner of choice

We advise our clients on business management, optimization and compliance with regulations (tax, accounting, legal and social)

Business knowledge of our clients

Quality of work

Reactivity of our teams

Professional discretion

We consider client satisfaction as our first priority, in compliance with the law and regulations, which is why each mission is carried out according to the following three criteria :


We stand by your side and are committed to answering your requests as soon as possible


Our clients protection includes respecting their confidentiality and the professional rules, laws and regulations governing our profession and their sectors


Your satisfaction is a result of optimizations we provide and the appropriate controls implementation

The human relationship, an essential value

Our collaboration is based on an essential value, the human relationship. You are at the heart of our concerns, your satisfaction is our top priority. To achieve this goal, we are always listening to you, thanks to our proximity and our transparency, to advise you at best and to give you back the trust that you place on us. We are proud to contribute to the success of our clients.

Our team


Michael Salama

Partner Audit & Advisory

Michael is a man of projects.
Even better: successful projects. MBA, chartered accountant, then creating and running a cost optimization company …

Today, Ypsom partner, Michael leads the audit assignments and advises for his clients. His audit training allows him to grasp issues methodically, rapidly assimilating complex processes and having a pragmatic vision of an organization … and when the consultant takes over, always providing with appropriate solutions.

Michael will be by your side where the figures take a human dimension and translate into concrete advices in the daily organisation of its clients.

Audrey Zawieja

Audrey Zawieja

Finance Services Partner

Audrey begins her experience within small accounting firms and then joins an international group as administrative and financial manager of a 5 people team. An experience she will push forward within an international accounting firm for 6 years.

In 2013, the opportunity came to join a software multinational. Those various experiences have allowed Audrey to understanding organisations real issues, their management expectations and use her large experience to benefit her accountant practice.

Dennis Soussi

Denis Soussi

Tax Partner

Chartered accountant, tax specialist, founder and managing partner of Constax Fiduciaire Sàrl.

With more than 40 years of experience in the main areas of public accounting, especially taxation, Denis is our Tax partner.

His main areas of activity are the direct and indirect taxation of commercial and financial companies, the analysis of complex tax situations, advice on pre- and post-retirement planning, successions and tax compliance.

Our partners

Since we only work effectively together …

The Swiss leader in accounting software that simplifies the lives of business managers and self-employed by having all accounting in one. The same tool allows you to manage your finances by directly importing your bank entries, establishing your proposals, orders, invoices, customer reminders, pay slips and much more. Ypsom Partners is proud to be named a Bexio Gold Partner with more than 50 clients accounts created on Bexio!

Odoo is a complete and à la carte management solution offering all sizes businesses a great flexibility of use. Beyond accounting and billing, Odoo also offers other business digital functions such as inventory management, website creation, e-commerce site management, HR management, CRM, marketing and more.

Costbrokers SA is a Swiss advisory structure whose unique objective is to give you more room for investment by directly acting into optimizing your operational results and impacting positively your periodic cash.