Jascha Mattmann | Kellerhals Carrard

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Jascha Mattmann

Attorney at Law

Jascha Mattmann

Attorney with an understanding of complex commercial-law matters, who passionately stands up for the interests of his clients.

Contact

+41 58 200 39 00

jascha.mattmann@kellerhals-carrard.ch

Person

Jascha Mattmann advises, represents, and accompanies clients in the areas of start-ups & venture capital, litigation, and white-collar crime. Previously, he was active in a leading commercial law boutique in Zurich, as a court clerk at the District Court of Zurich, and as a research associate and lecturer at the Universities of Bern and Zurich.

Languages

German, English, French, Spanish

Expertise

Employment and Social Security Law

Deals & Cases

Deal Ticker: Kellerhals Carrard is pleased to have advised Grensol AG on its CHF 1.8 million seed financing roundAugust 4, 2025

White-collar crime, mutual legal assistance, internal investigations, crisis management, and compliance

Dispute Resolution and Litigation

Startup & Venture Capital Desk

Rankings & Awards

Best mark attorney’s licence (distinction “with very good success”), 2024
Award for the best Master’s thesis in criminal law, 2021
Award for the second-best Bachelor’s degree of the year, 2019

Career

Since 2025: Lawyer, Kellerhals Carrard
2022 – 2023: Junior Associate, Wartmann Merker
2021 – 2022: Court clerk, District Court of Zurich
2021: Intern, Public Prosecutor’s Office Lucerne
2021 – 2023: Lecturer, University of Zurich
2020: Research assistant in criminal law, University of Zurich
2018 – 2020: Research assistant in public law, University of Bern
2018: Short-term intern, Walder Wyss, Zurich

Education

2024: Attorney’s licence of the Canton of Lucerne (summa cum laude)
2021: Master of Law, University of Bern (summa cum laude)
2019: Bachelor of Law, University of Bern (summa cum laude)
2014: Bachelor in International Relations, University of Geneva

Deal Ticker: Kellerhals Carrard advises b-rayZ on its strategic partnership with Affidea as part of its series A extension round

Deal Ticker: Kellerhals Carrard advises b-rayZ on its strategic partnership with Affidea as part of its series A extension round

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Bulletin

Kellerhals Carrard #1 Swiss VC Law FirmMarch 11, 2025

Publications

Heimliche Verurteilungen - Empirische Erkenntnisse und konventionsrechtliche Bedenken zur fiktiven Zustellung von StrafbefehlenZStrR, 3/2021, S. 253–278. Authors: Mattmann, Jascha; Eschle, David; Rader, Franziska; Walser, Simone; Thommen, Marc2021Jascha Mattmann

All Publications