Since 2011, Kalexius has grown to become a leading provider of innovative legal services to clients worldwide.

We focus on employing permanent teams of lawyers, consultants and project managers throughout our locations. Our teams range from freshly qualified to seasoned, GC-level lawyers. We deploy the most appropriate mix of resources for each assignment and implement best-shoring strategies to deliver quality work at a reasonable cost

Nicolas Leroux.

Managing director

Nicolas Leroux is the Founder and Managing Director of Kalexius. He leads Kalexius operations across our practice areas and is responsible for strategy and business development. Nicolas is a member of the Geneva and Paris bars and holds a PhD from Université Panthéon Assas Paris II.


Nathalie Lambert.

Practice Head

Nathalie Lambert currently serves as Practice Head for our Banking & Finance practice. Nathalie is an English qualified solicitor. After several years spent in magic circle law firms, she worked in the legal department of two investment banks in London and New York. She also taught corporate law at a law school in London. Nathalie holds a Masters degree in corporate law from Paris XI University and a Diploma in Law from Edinburgh University. She completed her legal qualification at the College of Law in London.


Pauline Zimmermann .

General Counsel

Pauline Zimmermann currently serves as General Counsel for the Kalexius group and is involved in corporate and data protection projects. Before joining Kalexius, Pauline worked at the European Court of Human Rights and for a French law firm. Pauline is a member of the Paris bar. She holds a Law Degree from the University of Geneva and a Master Degree from Aix-Marseille University.


Carolyn Olsburgh.

Senior Legal Counsel

Carolyn Olsburgh is Senior Legal Counsel at Kalexius. She is involved in employment, corporate and contract management projects. Prior to joining Kalexius, Carolyn was in private practice with leading law firms in Geneva and London and later worked with Nestlé in Switzerland for nearly ten years. Carolyn is a member of the Geneva bar. She earned her Law Degree from the University of Lausanne (Switzerland) and a Master of Law degree from The University of Cambridge (UK).


Stella Petersen.

Legal Operations Specialist

As Legal Operations Specialist, Stella drives quality, efficiency and innovation to legal service delivery at Kalexius. To achieve these goals, she develops strategies in the areas of Legal Project Management, Operating Model Design, Process and Technology expertise. A former lawyer and member of the Paris bar, Stella holds a Master’s Degree from Université Panthéon Assas Paris II. Stella also holds the Project Management Professional (PMP) certification from the Project Management Institute.


Zinat Coorbanally.

Chief Operating Officer

Zinat Coorbanally is the Chief Operating Officer of Kalexius. She is responsible for project management and support functions across our locations as well as supporting lawyers in managing their projects. Zinat holds a BSc(Hons) Information System and is a qualified member of the Association of Chartered Accountant (ACCA). Zinat is also an ISO27001 certified lead auditor and is a certified CISA and CISM member.


Jean-Marc Panchaud.

Chief Financial Officer

Jean-Marc Panchaud leads the finance function of Kalexius Group. Jean-Marc started his career at PricewaterhouseCoopers Lausanne for a period of 8 years as financial auditor. He was then the financial director of several SMEs in Switzerland and abroad, especially in commercial aviation. Jean-Marc holds a Master Degree in Business and Economics from the University of Lausanne (HEC Lausanne) and is a Swiss CPA (Certified Public Accountant).


Virginie Dijoux.

Chief Human Resources Officer

Virginie Dijoux is in charge of human resources at Kalexius. Virginie has fifteen years of experience in various HR roles and oversees the implementation of Kalexius’ human resources strategy. Virginie holds a Master’s degree in Law from the University of Montpellier I and a Master’s degree in Human Resources and Organization from the I.A.E. of Reunion Island.