About Us
Taler Systems SA has been developing GNU Taler since 2016. Taler pursues the goal of digitalizing cash and
replicating the advantages of cash, but enhancing them with functionalities like built-in technical security,
payment safety, data minimization and privacy by design. Furthermore, Taler enables new online business
models, especially those based on micropayments. Taler makes payments safe and easy, fully in accordance
with regulatory requirements, AML, KYC, and CFT regulations.
Taler Systems SA was founded in 2016 and is headquartered in Luxembourg.

Christian Grothoff and Leon Schumacher

One-click private digital cash payments and tokenization

7, Rue de Mondorf, L-5421 Erpeldange, Luxembourg

Société Anonyme

Revolutionize payments with privacy

Financial services
and related
Culture
Taler Systems SA is dedicated to Free Software and is one of the high priority projects at the core of the Free/Libre and Open Source Software (FLOSS) community. Thus, the company gains the interest of ambitious programmers in the field and gathers several GNU maintainers as team members. As a consequence, the company combines high-ranking competencies, programming skills, academic expertise and proven business knowledge to debut with a disruptive state-of-the-art solution that revolutionizes the payments industry.

Meet The Team
Taler Systems SA has four core team members:

Christian Grothoff
CEO
Christian is professor for computer science at the University of Applied Sciences in Bern (Fachhochschule Bern) focusing on network security and privacy. He is an Ashoka fellow, serves on the GNU advisory board and maintains four GNU software packages. He earned his PhD in computer science from UCLA, an M.S. in computer science from Purdue University, and a Diploma in Mathematics from the University of Wuppertal.

Leon Schumacher
Chairman Of The Board
Leon is a leader in the international CIO community who possesses a deep knowledge of the needs and functioning of Fortune 100 companies. Prior to co-founding Taler, Leon served as group CIO at two global companies, Mittal Steel and Novartis. Leon earned his master’s in electrical engineering from ETH Zürich and his master’s in management from HEC Paris. He also has a post-MBA certificate from the Kellogg School of Management at Northwestern University.

Michael Widmer
Legal & Regulatory Affairs
Michael is an entrepreneur and he brings to Taler his extensive banking and financial market experience. In his 20 years of experience in the international financial sector, he worked as a commercial lawyer, as managing director of the Eurex stock exchange and as Co-CEO of the Gutenberg Group. He received a Ph.D. in Law from the University of Zurich and an executive MBA from University of Rochester. Michael is also admitted to the Bar Association in Zurich.

Florian Dold
CTO
Florian is a passionate programmer and researcher. Prior to co-founding Taler, he worked on GNUnet, a decentralized and privacy-preserving peer-to-peer framework. Florian earned his Master of Science from the Technical University of Munich. He obtained his PhD at Inria / Rennes 1 in this subject.
Join Our Team
Taler Systems SA is always looking for skilled programmers.
Taler's code is based on Free Software and ranks as a high priority project of the Free Software Foundation (fsf.org). You will be co-working with us for a fascinating project in a compelling environment and collaborate with hackers thriving forward the freedom of the internet.
iOS App Developer
We are looking to hire an iOS app developer as freelancer to build and test an iOS application for Taler. Your primary focus will be the migration of our existing Taler wallet app for Android (written in Kotlin). The iOS app to be developed will be based on Swift and should run on the latest Apple mobile devices. Ideally, you possess a strong working knowledge of iOS Frameworks, you know how to deal with the adaption of native designs for Apple users, and you should be proficient in using native C libraries within iOS.
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Designing and building a mobile application for Apple’s iOS platform.
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Collaborating with the design team to define app features.
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Ensuring quality and performance of the application to specifications.
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Identifying potential problems and resolving performance bottlenecks.
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Fixing application bugs before the final release.
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Publishing the Taler application on the App Store.
Your responsibilities:
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Experience with Swift, iOS Frameworks such as Core Data and Core Animation.
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At least basic knowledge of UX design and its implementation.
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Knowledge of Apple’s design principles and application interface guidelines.
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Proficiency in using code versioning tools (Git).
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Experience with continuous integration and bug trackers (Mantis).
Requirements:
In case of your interest in this job please send us an e-mail to ceo@taler.net or give us a call.
Full Time
Anywhere
Backend Developer / Junior Backend Developer
In case of your interest in this job please send us an e-mail to ceo@taler.net.
Full Time / Half Time
Anywhere
Backend Developer / Junior Backend Developer
In case of your interest in this job please send us an e-mail to ceo@taler.net.
Full Time / Half Time
Luxembourg
Contact Us Today
You can get into touch with Taler Systems SA via e-mail, phone or mail:

Reach Us
7, Rue de Mondorf, L-5421 Erpeldange, Luxembourg

Call Us
Have a question?
Tel: +41 44 280 1200