In 2009, Miriam founded the fintech company Ratepay, where she served as Managing Director until October 2021. Ratepay achieved unicorn status and has been profitable since 2016. In 2021, it became part of Nexi S.p.A and currently employs nearly 300 people.

In 2016, she co-founded the financial news portal paymentandbanking.com (PBA Experts GmbH).

In 2020, she co-founded the fintech company Banxware with Jens Röhrborn. Within just one year, Banxware raised over 14 million in venture capital and built a team of over 30 employees. She continues to serve as Co-CEO.

Since 2019, she has been a shareholder of the Startup Teens Network e.V.

As a board member, she supports the programming school School 42 in Heilbronn.

She is also active as a supervisory board member at Daimler Mobility AG, Freenet AG, and talentsconnect AG.

Additionally, she is a member of the „Digital Finance Forum“ of the Federal Ministry of Finance.

Furthermore, she serves as Co-Chair of the Federal Association of German Startups and as an IC Member of TX Ventures.

In 2021, she co-authored and published the Spiegel bestseller Zukunftsrepublik.

Manager Magazin has repeatedly named her among the Top 100 most influential women in the German economy.

In 2022, Handelsblatt recognized her as one of the people of the year.

Miriam Wohlfarth was featured on the cover of the German-language Forbes magazine in 2020. She has been recognized as a LinkedIn Top Voice